Wideband code-division-multiple access system and method

• US 5,784,366 A
• Filed: 08/27/1996
• Issued: 07/21/1998
• Est. Priority Date: 08/27/1996
• Status: Expired due to Fees

• Current Assignee: Transsky Corporation
• Original Assignee: Transsky Corporation
• Inventors: Apelewicz, Tuvia
• Primary Examiner(s): Kizou, Hassan
• Application Number:
  US08/703,826
• Time in Patent Office: 693 Days
• Field of Search: 370/320, 370/335, 370/342, 370/491, 370/500, 375/200, 375/205, 375/206, 375/229, 375/235, 375/308, 375/326, 375/329, 375/349
• US Class Current: 370/342
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence

Abstract

A wideband code division multiple access, spread-spectrum communications system, having an equalization channel. The transmitter transmits data over a spread-spectrum channel, along with a spread-spectrum channel having little or no information, i.e., an equalization channel. The receiver uses in-phases early, punctual and late signals, and quadrature-phase early, punctual and late signals, for equalizing of the data spread-spectrum channel, and for generating an output in-phase data signal and an output quadrature-phase data signal.

Claims

1. An improvement to a wideband code-division-multiple-access (W-CDMA) system, comprising:

a W-CDMA transmitter, said W-CDMA transmitter including,

an in-phase-data-product device for multiplying an in-phase-data (IDATA) signal with a data-chip-sequence signal, thereby generating an IDATA-spread-spectrum signal;

a quadrature-phase-data-product device for multiplying a quadrature-phase-data (QDATA) signal with the data-chip-sequence signal, thereby generating a QDATA-spread-spectrum signal;

equalization-chip means for outputting an equalization-chip-sequence signal;

an in-phase combiner, coupled to said in-phase-data-product device and to said equalization-chip means, for linearly combining the IDATA-spread-spectrum signal and the equalization-chip-sequence signal, to generate an in-phase-combined-spread-spectrum signal;

a quadrature-phase combiner, coupled to said quadrature-phase-data-product device and to said equalization-chip means, for linearly combining the QDATA-spread-spectrum signal, and the equalization-chip-sequence signal, to generate the quadrature-phase-combined-spread-spectrum signal;

a quadrature-phase-shift-keyed (QPSK) modulator, coupled to said in-phase combiner and to said quadrature-phase combiner, for QPSK modulating the in-phase-combined-spread-spectrum signal with the quadrature-phase-combined-spread-spectrum signal, thereby generating a QPSK-spread-spectrum signal;

a power amplifier, coupled to said QPSK modulator, for amplifying the QPSK-spread-spectrum signal;

a transmitter antenna, coupled to said power amplifier, for radiating the amplified QPSK-spread-spectrum signal over a communications channel;

a W-CDMA receiver, said W-CDMA receiver including,

a receiver antenna for coupling the W-CDMA receiver to the communications channel;

in-phase-punctual-equalization (IPE) means, coupled to said receiver antenna, for despreading an in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-in-phase-punctual-equalization signal (RIEQ_P);

first in-phase-late-equalization (ILE) means, coupled to said receiver antenna, for despreading, a first portion of a chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-equalization signal (RIEQ_L1);

quadrature-phase-punctual-equalization (QPE) means, coupled to said receiver antenna, for despreading a quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-quadrature-phase-punctual-equalization signal (RQEQ_P);

first quadrature-phase-late-equalization (QLE) means, coupled to said receiver antenna, for despreading, the first portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-equalization signal (RQEQ_L1);

in-phase-punctual-data (IPD) means, coupled to said receiver antenna, for despreading the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-in-phase-punctual-data signal (RIDATA_P);

first in-phase-late-data (ILD) means, coupled to said receiver antenna, for despreading, the first portion of the chip late, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-data signal (RIDATA_L1);

quadrature-phase-punctual-data (QPD) means, coupled to said receiver antenna, for despreading the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-quadrature-phase-punctual-data signal (RQDATA_P);

first quadrature-phase-late-data (QLD) means, coupled to said receiver antenna, for despreading, the first portion of the chip late, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-data signal (RQDATA_L1); and

a processor for determining a first punctual-equalization signal (EQ1_P) from the received-in-phase-punctual-equalization signal (RIEQ_P) plus the received-quadrature-phase-punctual-equalization signal (RQEQ_P), for determining a second punctual-equalization signal (EQ2_P) from the received-quadrature-phase-punctual-equalization signal (RQEQ_P) minus the received-in-phase-punctual-equalization signal (RIEQ_P), for determining a first late-equalization signal (EQ1_L) from the first received-in-phase-late-equalization signal (RIEQ_L1) plus the first received-quadrature-phase-late-equalization signal (RQEQ_L1), for determining a second late-equalization signal (EQ2_L) from the first received-quadrature-phase-late-equalization signal (RQEQ_L1) minus the first received-in-phase-late-equalization signal (RIEQ_L1), for determining an in-phase-punctual-data signal (IDATA_P) from the received-in-phase-punctual-data signal (RIDATA_P) times the first punctual-equalization signal (EQ1_P), plus the received-quadrature-phase-punctual-data signal (RQDATA_P) times the second punctual-equalization signal (EQ2_P), for determining a quadrature-phase-punctual-data signal (QDATA_P) from the received-quadrature-phase-punctual-data signal (RQDATA_P) times the first punctual-equalization signal (EQ1_P), minus the received-in-phase-punctual-data signal (RIDATA_P) times the second punctual-equalization signal (EQ2_P), for determining a first in-phase-late-data signal (IDATA_L1) from the first received-in-phase-late-data signal (RIDATA_L1) times the first late-equalization signal (EQ1_L), plus the first received-quadrature-phase-late-data signal (RQDATA_L1) times the second late-equalization signal (EQ2_L), for determining a first quadrature-phase-late-data signal (QDATA_L1) from the first received-quadrature-phase-late-data signal (RQDATA_L1) times the first late-equalization signal (EQ 1_L), minus the first received-in-phase-late-data signal (RIDATA_L1) times the second late-equalization signal (EQ2_L), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_P and for, determining an output-quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_P.

2. The W-CDMA system as set forth in claim 1, further comprising:

second ILE means, coupled to said receiver antenna, for despreading, a second portion of a chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-equalization signal (RIEQ_L2);

second QLE means, coupled to said receiver antenna, for despreading, the second portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-equalization signal (RQEQ_L2);

second ILD means, coupled to said receiver antenna, for despreading, the second portion of the chip late, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-data signal (RIDATA_L2);

second QLD means, coupled to said receiver antenna, for despreading, the second portion of the chip late, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-data signal (RQDATA_L2); and

said processor for determining a third late-equalization signal (EQ3_L) from the second received-in-phase-late-equalization signal (RIEQ_L2) plus the second received-quadrature-phase-late-equalization signal (RQEQ_L2), for determining a fourth late-equalization signal (EQ4_L) from the second received-quadrature-phase-late-equalization signal (RQEQ_L2) minus the second received-in-phase-late-equalization signal (RIEQ_L2), for determining a second in-phase-late-data signal (IDATA_L2) from the second received-in-phase-late-data signal (RIDATA_L2) times the third late-equalization signal (EQ3_L), plus the second received-quadrature-phase-late-data signal (RQDATA_L2) times the fourth late-equalization signal (EQ4_L), for determining a second quadrature-phase-late-data signal (QDATA_L2) from the second received-quadrature-phase-late-data signal (RQDATA_L2) times the third late-equalization signal (EQ3_L) minus the second received-in-phase-late-data signal (RIDATA_L2) times the fourth late-equalization signal (EQ4_L), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P.

3. The W-CDMA system as set forth in claim 2, further comprising:

first in-phase-early-equalization (IEE) means, coupled to said receiver antenna, for despreading, the first portion of the chip early, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-equalization signal (RIEQ_E1);

first quadrature-phase-early-equalization (QEE) means, coupled to said receiver antenna, for despreading, the first portion of the chip early, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-equalization signal (RQEQ_E1);

first in-phase-early-data (IED) means, coupled to said receiver antenna, for despreading, the first portion of the chip early, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-data signal (RIDATA_E1);

first quadrature-phase-early-data (QED) means, coupled to said receiver antenna, for despreading, the first portion of the chip early, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-data signal (RQDATA_E1); and

processor for determining a first early-equalization signal (EQ1_E) from the first received-in-phase-early-equalization signal (RIEQ_E1) plus the first received-quadrature-phase-early equalization signal (RQEQ_E1), for determining a second early-equalization signal (EQ2_E) from the first received-quadrature-phase-early-equalization signal (RQEQ_E1) minus the first received-in-phase-early-equalization signal (RIEQ_E1), for determining a first in-phase-early-data signal (IDATA_E1) from the first received-in-phase-early-data signal (RIDATA_E1) times the first early-equalization signal (EQ1_E), plus the first received-quadrature-phase-early-data signal (RQDATA_E1) times the second early-equalization signal (EQ2_E), for determining a first quadrature-phase-early-data signal (QDATA_E1) from the first received-quadrature-phase-early-data signal (RQDATA_E1) times the first early-equalization signal (EQ1_E), minus the first received-in-phase-early-data signal (RIDATA_E1) times the second early-equalization signal (EQ2_E), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_L2 +IDATA_P +IDATA_E1 and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_L2 +QDATA_P +QDATA_E1.

4. The W-CDMA system as set forth in claim 3, further comprising:

second IEE means, coupled to said receiver antenna, for despreading, the second portion of the chip early, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-early-equalization signal (RIEQ_E2);

second QEE means, coupled to said receiver antenna, for despreading, the second portion of the chip early, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-early-equalization signal (RQEQ_E2);

second IED means, coupled to said receiver antenna, for despreading, the second portion of the chip early, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-in-phase-early-data signal (RIDATA_E2);

second QED means, coupled to said receiver antenna, for despreading, the second portion of the chip early, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-quadrature-phase-early-data signal (RQDATA_E2); and

processor for determining a third early-equalization signal (EQ3_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) plus the second received-in-phase-early-equalization signal (RIEQ_E2), for determining a fourth early-equalization signal (EQ4_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) minus the second received-in-phase-early-equalization signal (RIEQ_E2), for determining a second in-phase-early-data signal (IDATA_E2) from the second received-in-phase-early-data signal (RIDATA_E2) times the third punctual-equalization signal (EQ3_P), plus the second received-quadrature-phase-early-data signal (RQDATA_E2) times the fourth early-equalization signal (EQ4_E), for determining a second quadrature-phase-early-data signal (QDATA_E2) from the second received-quadrature-phase-early-data signal (RQDATA_E2) times the third early-equalization signal (EQ3_E), minus the second received-in-phase-early-data signal (RIDATA_E2) times the fourth early-equalization signal (EQ4_E), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P +IDATA_E1 +IDATAE_E2 and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P +QDATA_E1 +QDATA_E2.

5. A method using wideband code-division-multiple-access (W-CDMA) transmitter and a W-CDMA receiver, comprising the steps of:

multiplying, at said W-CDMA transmitter, an in-phase-data (IDATA) signal with a data-chip-sequence signal, thereby generating an IDATA-spread-spectrum signal;

multiplying, at said W-CDMA transmitter, a quadrature-phase-data (QDATA) signal with the data-chip-sequence signal, thereby generating a QDATA-spread-spectrum signal;

generating, at said W-CDMA transmitter, an equalization-chip-sequence signal;

combining, linearly, at said W-CDMA transmitter, the IDATA-spread-spectrum signal and the equalization-chip-sequence signal, to generate an in-phase-combined-spread-spectrum signal;

combining, linearly, at said W-CDMA transmitter, the QDATA-spread-spectrum signal, and the equalization-chip-sequence signal, to generate the quadrature-phase-combined-spread-spectrum signal;

QPSK modulating, at said W-CDMA transmitter, the in-phase-combined-spread-spectrum signal with the quadrature-phase-combined-spread-spectrum signal, thereby generating a QPSK-spread-spectrum signal;

radiating, at said W-CDMA transmitter, the amplified QPSK-spread-spectrum signal over a communications channel;

despreading, at said W-CDMA receiver, an in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-in-phase-punctual-equalization signal (RIEQ_P);

despreading, a first portion of a chip late, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-equalization signal (RIEQ_L1);

despreading, at said W-CDMA receiver, a quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-quadrature-phase-punctual-equalization signal (RQEQ_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-equalization signal (RQEQ_L1);

despreading, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-in-phase-punctual-data signal (RIDATA_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-data signal (RIDATA_L1);

despreading, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-quadrature-phase-punctual-data signal (RQDATA_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-data signal (RQDATA_L1);

determining, at said W-CDMA receiver, a first punctual-equalization signal (EQ1_P) from the received-in-phase-punctual-equalization signal (RIEQ_P) plus the received-quadrature-phase-punctual-equalization signal (RQEQ_P);

determining, at said W-CDMA receiver, a second punctual-equalization signal (EQ2_P) from the received-quadrature-phase-punctual-equalization signal (RQEQ_P) minus the received-in-phase-punctual-equalization signal (RIEQ_P);

determining, at said W-CDMA receiver, a first late-equalization signal (EQ1_L) from the first received-in-phase-late-equalization signal (RIEQ_L1) plus the first received-quadrature-phase-late-equalization signal (RQEQ_L1);

determining, at said W-CDMA receiver, a second late-equalization signal (EQ2_L) from the first received-quadrature-phase-late-equalization signal (RQEQ_L1) minus the first received-in-phase-late-equalization signal (RIEQ_L1);

determining, at said W-CDMA receiver, an in-phase-punctual-data signal (IDATA_P) from the received-in-phase-punctual-data signal (RIDATA_P) times the first punctual-equalization signal (EQ1_P), plus the received-quadrature-phase-punctual-data signal (RQDATA_P) times the second punctual-equalization signal (EQ2_P);

determining, at said W-CDMA receiver, a quadrature-phase-punctual-data signal (QDATA_P) from the received-quadrature-phase-punctual-data signal (RQDATA_P) times the first punctual-equalization signal (EQ1_P), minus the received-in-phase-punctual-data signal (RIDATA_P) times the second punctual-equalization signal (EQ2_P);

determining, at said W-CDMA receiver, a first in-phase-late-data signal (IDATA_L1) from the first received-in-phase-late-data signal (RIDATA_L1) times the first late-equalization signal (EQ1_L), plus the first received-quadrature-phase-late-data signal (RQDATA_L1) times the second late-equalization signal (EQ2_L);

determining, at said W-CDMA receiver, a first quadrature-phase-late-data signal (QDATA_L1) from the first received-quadrature-phase-late-data signal (RQDATA_L1) times the first late-equalization signal (EQ1_L), minus the first received-in-phase-late-data signal (RIDATA_L1) times the second late-equalization signal (EQ2_L);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_P ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_P.

6. The W-CDMA method as set forth in claim 5, further comprising the steps of:

despreading, at said W-CDMA receiver, the second portion of the chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-equalization signal (RIEQ_L2);

despreading, at said W-CDMA receiver, the second portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-equalization signal (RQEQ_L2);

despreading, the second portion of the chip late, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-data signal (RIDATA_L2);

despreading, the second portion of the chip late, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-data signal (RQDATA_L2); and

determining, at said W-CDMA receiver, a third late-equalization signal (EQ3_P) from the second received-in-phase-late-equalization signal (RIEQ_L2) plus the second received-quadrature-phase-late-equalization signal (RQEQ_L2);

determining, at said W-CDMA receiver, a fourth late-equalization signal (EQ4_L) from the second received-quadrature-phase-late-equalization signal (RQEQ_L2) minus the second received-in-phase-late-equalization signal (RIEQ_L2);

determining, at said W-CDMA receiver, a second in-phase-late-data signal (IDATA_L2) from the second received-in-phase-late-data signal (RIDATA_L2) times the third late-equalization signal (EQ3_L), plus the second received-quadrature-phase-late-data signal (RQDATA_L2) times the fourth late-equalization signal (EQ4_L);

determining, at said W-CDMA receiver, a second quadrature-phase-late-data signal (QDATA_L2) from the second received-quadrature-phase-late-data signal (RQDATA_L2) times the third late-equalization signal (EQ3_L) minus the second received-in-phase-late-data signal (RIDATA_L2) times the fourth late-equalization signal (EQ4_L);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P.

7. The W-CDMA method as set forth in claim 6, further comprising the steps of:

despreading, the first portion of the chip early, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-equalization signal (RIEQ_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-equalization signal (RQEQ_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-data signal (RIDATA_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-data signal (RQDATA_E1); and

determining, at said W-CDMA receiver, a first early-equalization signal (EQ1_E) from the first received-in-phase-early-equalization signal (RIEQ_E1) plus the first received-quadrature-phase-early equalization signal (RQEQ_E1);

determining, at said W-CDMA receiver, a second early-equalization signal (EQ2_E) from the first received-quadrature-phase-early-equalization signal (RQEQ_E1) minus the first received-in-phase-early-equalization signal (RIEQ_E1);

determining, at said W-CDMA receiver, a first in-phase-early-data signal (IDATA_E1) from the first received-in-phase-early-data signal (RIDATA_E1) times the first early-equalization signal (EQ1_E), plus the first received-quadrature-phase-early-data signal (RQDATA_E1) times the second early-equalization signal (EQ2_E);

determining, at said W-CDMA receiver, a first quadrature-phase-early-data signal (QDATA_E1) from the first received-quadrature-phase-early-data signal (RQDATA_E1) times the first early-equalization signal (EQ1_E), minus the first received-in-phase-early-data signal (RIDATA_E1) times the second early-equalization signal (EQ2_E);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_L2 +IDATA_P +IDATA_E1 ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_L2 +QDATA_P +QDATA_E1.

8. The W-CDMA method as set forth in claim 7, further comprising the steps of:

despreading, the second portion of the chip early, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-early-equalization signal (RIEQ_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-early-equalization signal (RQEQ_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-in-phase-early-data signal (RIDATA_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-quadrature-phase-early-data signal (RQDATA_E2); and

determining, at said W-CDMA receiver, a third early-equalization signal (EQ3_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) plus the second received-in-phase-early-equalization signal (RIEQ_E2);

determining, at said W-CDMA receiver, a fourth early-equalization signal (EQ4_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) minus the second received-in-phase-early-equalization signal (RIEQ_E2);

determining, at said W-CDMA receiver, a second in-phase-early-data signal (IDATA_E2) from the second received-in-phase-early-data signal (RIDATA_E2) times the third punctual-equalization signal (EQ3_P), plus the second received-quadrature-phase-early-data signal (RQDATA_E2) times the fourth early-equalization signal (EQ4_E);

determining, at said W-CDMA receiver, a second quadrature-phase-early-data signal (QDATA_E2) from the second received-quadrature-phase-early-data signal (RQDATA_E2) times the third early-equalization signal (EQ3_E), minus the second received-in-phase-early-data signal (RIDATA_E2) times the fourth early-equalization signal (EQ4_E);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P +IDATA_E1 +IDATA_E2 ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P +QDATA_E1 +QDATA_E2.

9. An improvement to a wideband code-division-multiple-access (W-CDMA) receiver for receiving a QPSK-spread-spectrum signal comprising an in-phase-combined-spread-spectrum signal and a quadrature-phase-combined-spread-spectrum signal, with the in-phase-combined-spread-spectrum signal including an equalization-chip-sequence signal combined with an in-phase-data signal spread-spectrum processed with a data-chip-sequence signal, and with the quadrature-phase-combined-spread-spectrum signal including an equalization-chip-sequence signal combined with a quadrature-phase-data signal spread-spectrum processed with the data-chip-sequence signal, the improvement comprising:

in-phase-punctual-equalization (IPE) means for despreading an in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-in-phase-punctual-equalization signal (RIEQ_P);

first in-phase-late-equalization (ILE) means for despreading, a first portion of a chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-equalization signal (RIEQ_L1);

quadrature-phase-punctual-equalization (QPE) means for despreading a quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-quadrature-phase-punctual-equalization signal (RQEQ_P);

first quadrature-phase-late-equalization (QLE) means for despreading, a first portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-equalization signal (RQEQ_L1);

in-phase-punctual-data (IPD) means for despreading the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-in-phase-punctual-data signal (RIDATA_P);

first in-phase-late-data (ILD) means for despreading, the first portion of the chip late, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-data signal (RIDATA_L1);

quadrature-phase-punctual-data (QPD) means for despreading the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-quadrature-phase-punctual-data signal (RQDATA_P);

first quadrature-phase-late-data (QLD) means for despreading, a first portion of the chip late, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-data signal (RQDATA_L1); and

a processor, coupled to said IPE means, ILE means, QPE means, QLE means, IPD means, ILD means, QPD means, and QLD means, for determining a first punctual-equalization signal (EQ1_P) from the received-in-phase-punctual-equalization signal (RIEQ_P) plus the received-quadrature-phase-punctual-equalization signal (RQEQ_P), for determining a second punctual-equalization signal (EQ2_P) from the received-quadrature-phase-punctual-equalization signal (RQEQ_P) minus the received-in-phase-punctual-equalization signal (RIEQ_P), for determining a first late-equalization signal (EQ1_L) from the first received-in-phase-late-equalization signal (RIEQ_L1) plus the first received-quadrature-phase-late-equalization signal (RQEQ_L1), for determining a second late-equalization signal (EQ2_L) from the first received-quadrature-phase-late-equalization signal (RQEQ_L1) minus the first received-in-phase-late-equalization signal (RIEQ_L1), for determining an in-phase-punctual-data signal (IDATA_P) from the received-in-phase-punctual-data signal (RIDATA_P) times the first punctual-equalization signal (EQ1_P), plus the received-quadrature-phase-punctual-data signal (RQDATA_P) times the second punctual-equalization signal (EQ2_P), for determining a quadrature-phase-punctual-data signal (QDATA_P) from the received-quadrature-phase-punctual-data signal (RQDATA_P) times the first punctual-equalization signal (EQ1_P), minus the received-in-phase-punctual-data signal (RIDATA_P) times the second punctual-equalization signal (EQ2_P), for determining a first in-phase-late-data signal (IDATA_L1) from the first received-in-phase-late-data signal (RIDATA_L1) times the first late-equalization signal (EQ1_L), plus the first received-quadrature-phase-late-data signal (RQDATA_L1) times the second late-equalization signal (EQ2_L), for determining a first quadrature-phase-late-data signal (QDATA_L1) from the first received-quadrature-phase-late-data signal (RQDATA_L1) times the first late-equalization signal (EQ 1_L), minus the first received-in-phase-late-data signal (RIDATA_L1) times the second late-equalization signal (EQ2_L), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_P and for, determining an output-quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_P.

10. The improvement to the W-CDMA receiver as set forth in claim 9, further comprising:

second ILE means for despreading, a second portion of a chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-equalization signal (RIEQ_L2);

second QLE means for despreading, the second portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-equalization signal (RQEQ_L2);

second ILD means for despreading, the second portion of the chip late, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-data signal (RIDATA_L2);

second QLD means for despreading, the second portion of the chip late, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-data signal (RQDATA_L2); and

said processor, coupled to said ILE means, QLE means, ILD means and QLD means, for determining a third late-equalization signal (EQ3_L) from the second received-in-phase-late-equalization signal (RIEQ_L2) plus the second received-quadrature-phase-late-equalization signal (RQEQ_L2), for determining a fourth late-equalization signal (EQ4_L) from the second received-quadrature-phase-late-equalization signal (RQEQ_L2) minus the second received-in-phase-late-equalization signal (RIEQ_L2), for determining a second in-phase-late-data signal (IDATA_L2) from the second received-in-phase-late-data signal (RIDATA_L2) times the third late-equalization signal (EQ3_L), plus the second received-quadrature-phase-late-data signal (RQDATA_L2) times the fourth late-equalization signal (EQ4_L), for determining a second quadrature-phase-late-data signal (QDATA_L2) from the second received-quadrature-phase-late-data signal (RQDATA_L2) times the third late-equalization signal (EQ3_L) minus the second received-in-phase-late-data signal (RIDATA_L2) times the fourth late-equalization signal (EQ4_L), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P.

11. The improvement to the W-CDMA receiver as set forth in claim 10, further comprising:

first in-phase-early-equalization (IEE) means for despreading, the first portion of the chip early, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-equalization signal (RIEQ_E1);

first quadrature-phase-early-equalization (QEE) means for despreading, the first portion of the chip early, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-equalization signal (RQEQ_E1);

first in-phase-early-data (IED) means for despreading, the first portion of the chip early, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-data signal (RIDATA_E1);

first quadrature-phase-early-data (QED) means for despreading, the first portion of the chip early, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-data signal (RQDATA_E1); and

said processor, coupled to said IEE means, QEE means, IED means and QED means, for determining a first early-equalization signal (EQ1_E) from the first received-in-phase-early-equalization signal (RIEQ_E1) plus the first received-quadrature-phase-early equalization signal (RQEQ_E1), for determining a second early-equalization signal (EQ2_E) from the first received-quadrature-phase-early-equalization signal (RQEQ_E1) minus the first received-in-phase-early-equalization signal (RIEQ_E1), for determining a first in-phase-early-data signal (IDATA_E1) from the first received-in-phase-early-data signal (RIDATA_E1) times the first early-equalization signal (EQ1_E), plus the first received-quadrature-phase-early-data signal (RQDATAE₁) times the second early-equalization signal (EQ2_E), for determining a first quadrature-phase-early-data signal (QDATAE₁) from the first received-quadrature-phase-early-data signal (RQDATAE₁) times the first early-equalization signal (EQ1_E), minus the first received-in-phase-early-data signal (RIDATA_E1) times the second early-equalization signal (EQ2_E), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_L2 +IDATA_P +IDATA_E1 and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_L2 +QDATA_P +QDATA_E1.

12. The improvement to the W-CDMA receiver as set forth in claim 11, further comprising:

second IEE means for despreading the second portion of the chip early, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-early-equalization signal (RIEQ_E2);

second QEE means for despreading, the second portion of the chip early, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-early-equalization signal (RQEQ_E2);

second IED means for despreading, the second portion of the chip early, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-in-phase-early-data signal (RIDATA_E2);

second QED means for despreading, the second portion of the chip early, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-quadrature-phase-early-data signal (RQDATA_E2); and

said processor, coupled to said second IEE means, second QEE means, second IED means and second QED means, for determining a third early-equalization signal (EQ3_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) plus the second received-in-phase-early-equalization signal (RIEQ_E2), for determining a fourth early-equalization signal (EQ4_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) minus the second received-in-phase-early-equalization signal (RIEQ_E2), for determining a second in-phase-early-data signal (IDATA_E2) from the second received-in-phase-early-data signal (RIDATA_E2) times the third punctual-equalization signal (EQ3_P), plus the second received-quadrature-phase-early-data signal (RQDATA_E2) times the fourth early-equalization signal (EQ4_E), for determining a second quadrature-phase-early-data signal (QDATA_E2) from the second received-quadrature-phase-early-data signal (RQDATA_E2) times the third early-equalization signal (EQ3_E), minus the second received-in-phase-early-data signal (RIDATA_E2) times the fourth early-equalization signal (EQ4_E), for determining an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P +IDATA_E1 +IDATA_E2 and for, determining an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P +QDATA_E1 +QDATAE₂.

13. A method for improving a wideband code-division-multiple-access (W-CDMA) receiver for receiving a QPSK-spread-spectrum signal comprising an in-phase-combined-spread-spectrum signal and a quadrature-phase-combined-spread-spectrum signal, with the in-phase-combined-spread-spectrum signal including an equalization-chip-sequence signal combined with an in-phase-data signal spread-spectrum processed with a data-chip-sequence signal, and with the quadrature-phase-combined-spread-spectrum signal including an equalization-chip-sequence signal combined with a quadrature-phase-data signal spread-spectrum processed with the data-chip-sequence signal, comprising the steps of:

despreading, at said W-CDMA receiver, an in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-in-phase-punctual-equalization signal (RIEQ_P);

despreading, a first portion of a chip late, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-equalization signal (RIEQ_L1);

despreading, at said W-CDMA receiver, a quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a received-quadrature-phase-punctual-equalization signal (RQEQ_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-equalization signal (RQEQ_L1);

despreading, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-in-phase-punctual-data signal (RIDATA_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-late-data signal (RIDATA_L1);

despreading, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a received-quadrature-phase-punctual-data signal (RQDATA_P);

despreading, the first portion of the chip late, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-late-data signal (RQDATA_L1);

determining, at said W-CDMA receiver, a first punctual-equalization signal (EQ1_P) from the received-in-phase-punctual-equalization signal (RIEQ_P) plus the received-quadrature-phase-punctual-equalization signal (RQEQ_P);

determining, at said W-CDMA receiver, a second punctual-equalization signal (EQ2_P) from the received-quadrature-phase-punctual-equalization signal (RQEQ_P) minus the received-in-phase-punctual-equalization signal (RIEQ_P);

determining, at said W-CDMA receiver, a first late-equalization signal (EQ1_L) from the first received-in-phase-late-equalization signal (RIEQ_L1) plus the first received-quadrature-phase-late-equalization signal (RQEQ_L1);

determining, at said W-CDMA receiver, a second late-equalization signal (EQ2_L) from the first received-quadrature-phase-late-equalization signal (RQEQ_L1) minus the first received-in-phase-late-equalization signal (RIEQ_L1);

determining, at said W-CDMA receiver, an in-phase-punctual-data signal (IDATA_P) from the received-in-phase-punctual-data signal (RIDATA_P) times the first punctual-equalization signal (EQ1_P), plus the received-quadrature-phase-punctual-data signal (RQDATA_P) times the second punctual-equalization signal (EQ2_P);

determining, at said W-CDMA receiver, a quadrature-phase-punctual-data signal (QDATA_P) from the received-quadrature-phase-punctual-data signal (RQDATA_P) times the first punctual-equalization signal (EQ1_P), minus the received-in-phase-punctual-data signal (RIDATA_P) times the second punctual-equalization signal (EQ2_P);

determining, at said W-CDMA receiver, a first in-phase-late-data signal (IDATA_L1) from the first received-in-phase-late-data signal (RIDATA_L1) times the first late-equalization signal (EQ 1_L), plus the first received-quadrature-phase-late-data signal (RQDATA_L1) times the second late-equalization signal (EQ2_L);

determining, at said W-CDMA receiver, a first quadrature-phase-late-data signal (QDATA_L1) from the first received-quadrature-phase-late-data signal (RQDATA_L1) times the first late-equalization signal (EQ 1_L), minus the first received-in-phase-late-data signal (RIDATA_L1) times the second late-equalization signal (EQ2_L);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_P ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_P.

14. The W-CDMA method as set forth in claim 13, further comprising the steps of:

despreading, at said W-CDMA receiver, the second portion of the chip late, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-equalization signal (RIEQ_L2);

despreading, at said W-CDMA receiver, the second portion of the chip late, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-equalization signal (RQEQ_L2);

despreading, the second portion of the chip late, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-late-data signal (RIDATA_L2);

despreading, the second portion of the chip late, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-late-data signal (RQDATA_L2); and

determining, at said W-CDMA receiver, a third late-equalization signal (EQ3_P) from the second received-in-phase-late-equalization signal (RIEQ_L2) plus the second received-quadrature-phase-late-equalization signal (RQEQ_L2);

determining at said W-CDMA receiver, a fourth late-equalization signal (EQ4_L) from the second received-quadrature-phase-late-equalization signal (RQEQ_L2) minus the second received-in-phase-late-equalization signal (RIEQ_L2);

determining, at said W-CDMA receiver, a second in-phase-late-data signal (IDATA_L2) from the second received-in-phase-late-data signal (RIDATA_L2) times the third late-equalization signal (EQ3_L), plus the second received-quadrature-phase-late-data signal (RQDATA_L2) times the fourth late-equalization signal (EQ4_L);

determining, at said W-CDMA receiver, a second quadrature-phase-late-data signal (QDATA_L2) from the second received-quadrature-phase-late-data signal (RQDATA_L2) times the third late-equalization signal (EQ3_L) minus the second received-in-phase-late-data signal (RIDATA_L2) times the fourth late-equalization signal (EQ4_L);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P.

15. The W-CDMA method as set forth in claim 14, further comprising the steps of:

despreading, the first portion of the chip early, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-equalization signal (RIEQ_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-equalization signal (RQEQ_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-in-phase-early-data signal (RIDATA_E1);

despreading, the first portion of the chip early, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal, as a first received-quadrature-phase-early-data signal (RQDATA_E1); and

determining, at said W-CDMA receiver, a first early-equalization signal (EQ1_E) from the first received-in-phase-early-equalization signal (RIEQ_E1) plus the first received-quadrature-phase-early equalization signal (RQEQ_E1);

determining, at said W-CDMA receiver, a second early-equalization signal (EQ2_E) from the first received-quadrature-phase-early-equalization signal (RQEQ_E1) minus the first received-in-phase-early-equalization signal (RIEQ_E1);

determining, at said W-CDMA receiver, a first in-phase-early-data signal (IDATA_E1) from the first received-in-phase-early-data signal (RIDATA_E1) times the first early-equalization signal (EQ1_E), plus the first received-quadrature-phase-early-data signal (RQDATA_E1) times the second early-equalization signal (EQ2_E);

determining, at said W-CDMA receiver, a first quadrature-phase-early-data signal (QDATA_E1) from the first received-quadrature-phase-early-data signal (RQDATA_E1) times the first early-equalization signal (EQ1_E), minus the first received-in-phase-early-data signal (RIDATA_E1) times the second early-equalization signal (EQ2_E);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L1 +IDATA_L2 +IDATA_P +IDATA_E1 ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L1 +QDATA_L2 +QDATA_P +QDATA_E1.

16. The W-CDMA method as set forth in claim 15, further comprising the steps of:

despreading, the second portion of the chip early, at said W-CDMA receiver, the in-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-in-phase-early-equalization signal (RIEQ_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the quadrature-phase component of the equalization-chip-sequence signal embedded in the QPSK-spread-spectrum signal, as a second received-quadrature-phase-early-equalization signal (RQEQ_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the IDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-in-phase-early-data signal (RIDATA_E2);

despreading, the second portion of the chip early, at said W-CDMA receiver, the QDATA-spread-spectrum signal embedded in the QPSK-spread-spectrum signal as a second received-quadrature-phase-early-data signal (RQDATA_E2); and

determining, at said W-CDMA receiver, a third early-equalization signal (EQ3_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) plus the second received-in-phase-early-equalization signal (RIEQ_E2);

determining, at said W-CDMA receiver, a fourth early-equalization signal (EQ4_E) from the second received-quadrature-phase-early-equalization signal (RQEQ_E2) minus the second received-in-phase-early-equalization signal (RIEQ_E2);

determining, at said W-CDMA receiver, a second in-phase-early-data signal (IDATA_E2) from the second received-in-phase-early-data signal (RIDATA_E2) times the third punctual-equalization signal (EQ3_P), plus the second received-quadrature-phase-early-data signal (RQDATA_E2) times the fourth early-equalization signal (EQ4_E);

determining, at said W-CDMA receiver, a second quadrature-phase-early-data signal (QDATA_E2) from the second received-quadrature-phase-early-data signal (RQDATA_E2) times the third early-equalization signal (EQ3_E), minus the second received-in-phase-early-data signal (RIDATA_E2) times the fourth early-equalization signal (EQ4_E);

determining, at said W-CDMA receiver, an output-in-phase-data signal (IDATA_O) from IDATA_O =IDATA_L2 +IDATA_L1 +IDATA_P +IDATA_E1 +IDATA_E2 ; and

determining, at said W-CDMA receiver, an output quadrature-phase-data signal (QDATA_O) from QDATA_O =QDATA_L2 +QDATA_L1 +QDATA_P +QDATA_E1 +QDATA_E2.