Bit rate agile third-generation wireless CDMA, GSM, TDMA and OFDM system

• US 6,757,334 B1
• Filed: 08/09/1999
• Issued: 06/29/2004
• Est. Priority Date: 08/10/1998
• Status: Expired due to Term

• Current Assignee: Kamilo Feher
• Original Assignee: Kamilo Feher
• Inventors: Feher, Kamilo
• Primary Examiner(s): Liu, Shuwang
• Application Number:
  US09/370,362
• Time in Patent Office: 1,786 Days
• Field of Search: 375/130, 375/219, 375/259, 375/260, 375/261, 375/267, 375/298, 375/347, 375/296, 370/206, 370/208, 370/215, 455/115, 455/126, 455/132, 455/133, 455/134
• US Class Current: 375/259
• CPC Class Codes: H04B 2201/70703 using multiple or variable rates
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04L 27/0004 using wavelets
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2637 with direct modulation of individual subcarriers
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 7/0008 Synchronisation information channels, e.g. clock distribution lines

Abstract

Systems, apparatus, and methods for new generations of wireless systems, including multiple standard, interoperable Third-Generation (3G) and Second-Generation (2G), Spread Spectrum CDMA, WCDMA, GSM, Enhanced GSM systems and CSMA, TDMA and OFDM. Bit Rate Agile (BRA), Modulation and Code Selectable processing techniques of Gaussian Minimum Shiftl Keying (GMSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), and of Mis-Matched demodulator filters in which the demodulator filter set is mis-matched to the filter set of the signal modulator.

Claims

1. A cross-correlated signal processor comprising:

(a) means for cross-correlating a first input signal with a second input signal to generate cross-correlated in-phase (I) and quadrature-phase (Q) output signals adapted for Bit Rate Agile (BRA), cascaded mis-matched (ACM) Modulation-Demodulation (Modem) Format Selectable (MFS) and Code Selectable (CS) processing, the first input signal comprising a fraction or one or more than one symbol synchronous and/or asynchronous time constrained signal (TCS) response and cascaded long response (LR) filtered signal symbols of one or more input signals, and the second input signal comprising signal symbols of a quadrature-phase signal, the cross-correlated in-phase (I) and quadrature-phase (Q) output signals generated according to the following schedule;

(i) when the in-phase signal is zero, the cross-correlated quadrature-phase signal is close to the maximum amplitude normalized to one (1);

(ii) when the in-phase signal is non-zero, the magnitude of the cross-correlated quadrature-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1;

(iii) when the quadrature-phase signal is zero, the magnitude of the cross-correlated in-phase signal is close to the maximum amplitude; and

(iv) when the quadrature-phase channel signal is non-zero, the magnitude of the cross-correlated in-phase signal is reduced from 1 (normalized) to A, where 0≦

A<

1;

(b) means for quadrature modulating the cross-correlated in-phase and quadrature-phase output signals to provide a cross-correlated quadrature modulated output signal, the means for quadrature modulating including a BRA, MFS and BRA filter set;

(c) controller and selector means for BRA rate, MFS and CS processor selection and Linear and/or Non-Linearly Amplified (NLA) baseband and/or quadrature modulated signal selection;

(d) coupling means for coupling the cross-correlated quadrature modulated output signal to a transmission medium;

(e) a BRA, MFS and CS quadrature demodulator;

(f) a receiver port for connection of the received cross-correlated signal to the BRA, MFS and CS demodulator; and

(g) a Mis-Matched (MM) demodulator filter set for BRA, MFS and CS in which a filter set of the quadrature demodulator is mis-matched to the filter set of the means for quadrature modulating.

2. A cross-correlated signal processor comprising:

(a) a cross-correlator for cross-correlating a first input signal with a second input signal to generate cross-correlated in-phase (I) and quadrature-phase (Q) output signals adapted for Bit Rate Agile (BRA), cascaded mis-matched (ACM) Modulation-Demodulation (Modem) Format Selectable (MFS) and Code Selectable (CS) processing, the first input signal comprising a fraction or one or more than one symbol synchronous and/or asynchronous time constrained signal (TCS) response and cascaded long response (LR) filtered signal symbols of one or more input signals, and the second input signal comprising signal symbols of a quadrature-phase signal, the cross-correlated in-phase (I) and quadrature-phase (Q) output signals generated according to the following schedule;

(i) when the in-phase signal is zero, the cross-correlated quadrature-phase signal is close to the maximum amplitude normalized to one (1);

(ii) when the in-phase signal is non-zero, the magnitude of the cross-correlated quadrature-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1;

(iii) when the quadrature-phase signal is zero, the magnitude of the cross-correlated in-phase signal is close to the maximum amplitude; and

(iv) when the quadrature-phase signal is non-zero, the magnitude of the cross-correlated in-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1;

(b) a signal modulator for quadrature modulating the cross-correlated in-phase (I) and quadrature-phase (Q) output signals to provide a cross-correlated quadrature modulated output signal, the signal modulator including a BRA, MFS and BRA filter set;

(c) a controller and selector for selecting;

(1) at least one of or any combination of;

BRA, MFS, and CS processors;

(2) at least one of Linearly or Non-Linearly Amplified (NLA) baseband signals, or (3) at least one of linearly, non-linearly, or partially linearly and partially non-linearly amplified quadrature modulated signals;

(d) a first coupling for coupling the cross-correlated quadrature modulated output signal to a transmission medium;

(e) a second coupling for coupling a received cross-correlated quadrature modulated signal from the transmission medium to a receiver having a receiver port;

(f) a BRA, MFS, and CS quadrature demodulator;

(g) the receiver port for connection of the received cross-correlated quadrature modulated signal to the BRA, MFS, and CS demodulator; and

(h) a Mis-Matched (MM) demodulator filter set for BRA, MFS and CS in which the demodulator filter set is mis-matched to the BRA, MFS and BRA filter set of the signal modulator.

3. The cross-correlated signal processor of claim 2, wherein the cross-correlated signal processor is adapted to process (i) an in-phase signal component;

and (ii) a quadrature-phase signal component; and

the in-phase and quadrature-phase signal components characterized in that;

(i) when the in-phase signal is zero, the cross-correlated quadrature-phase signal is close to the maximum amplitude normalized to one (1);

(ii) when the in-phase signal is non-zero, the magnitude of the cross-correlated quadrature-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1;

(iii) when the quadrature-phase signal is zero, the magnitude of the cross-correlated in-phase signal is close to the maximum amplitude; and

(iv) when the quadrature-phase channel signal is non-zero, the magnitude of the cross-correlated in-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1.

4. A bit-rate agile (BRA) and modem format and code selectable signal pair comprising:

an in-phase cross-correlated channel signal component adapted for BRA, cascaded mis-matched (ACM) Modulation-Demodulation (Modem) Selectable (MFS) and Code Selectable (CS) processing; and

a quadrature-phase cross-correlated channel signal component adapted for BRA, cascaded mis-matched (ACM) Modulation-Demodulation (Modem) Selectable (MFS) and Code Selectable (CS) processing;

the in-phase and quadrature-phase cross-correlated channel signals characterized in that;

(i) when the in-phase signal is zero, the cross-correlated quadrature-phase signal is close to the maximum amplitude normalized to one (1);

(ii) when the in-phase signal is non-zero, the magnitude of the cross-correlated quadrature-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1;

(iii) when the quadrature-phase signal is zero, the magnitude of the cross-correlated in-phase signal is close to the maximum amplitude; and

(iv) when the quadrature-phase channel signal is non-zero, the magnitude of the cross-correlated in-phase signal is reduced from 1 (normalized) to A, where 0≦

A≦

1; and

the bit-rate agile (BRA) cross-correlated in-phase and quadrature-phase channel signal components are derived from at least one input signal stream as a fraction of a symbol or from one or more than one symbol as a time constrained signal (TCS) response and cascaded long response (LR) filtered signals.