CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems

• US 20040196923A1
• Filed: 04/24/2004
• Published: 10/07/2004
• Est. Priority Date: 08/31/1998
• Status: Active Grant

• Current Assignee: Kamilo Feher
• Original Assignee: Kamilo Feher
• Inventors: Feher, Kamilo
• Granted Patent: US 7,593,481 B2
• Time in Patent Office: Days
• US Class Current: 375/299
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• 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 1/0056 Systems characterized by the type of code used H04L1/08 takes precedence
• CPC Class Codes: H04L 2025/03547 Switching between time domain structures
• CPC Class Codes: H04L 2025/03681 Control of adaptation
• CPC Class Codes: H04L 2027/0087 Out-of-band signals, (e.g. pilots)
• CPC Class Codes: H04L 25/03019 adaptive, i.e. capable of adjustment during data reception
• CPC Class Codes: H04L 25/03828 Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties partial response systems H04L25/497
• 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 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2017 in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation H04L27/201 takes precedence
• CPC Class Codes: H04L 27/2053 using more than one carrier, e.g. carriers with different phases
• CPC Class Codes: H04L 27/2071 in which the data are represented by the carrier phase, e.g. systems with differential coding
• CPC Class Codes: H04L 27/22 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only
• CPC Class Codes: H04L 27/2637 : with direct modulation of individual subcarriers
• CPC Class Codes: H04L 27/2647 : Arrangements specific to the receiver only equalisation H04L27/01
• CPC Class Codes: H04L 27/34 : Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 27/3405 : Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
• CPC Class Codes: H04L 27/362 : Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated H04L27/366 takes precedence
• CPC Class Codes: H04L 27/38 : Demodulator circuits; Receiver circuits
• CPC Class Codes: H04L 7/0008 : Synchronisation information channels, e.g. clock distribution lines
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Receivers and demodulators, including smart diversity receivers, receive adaptive antenna arrays and receive adaptive equalizers are described in this invention. Spectral efficient quadrature modulated transmitters-receivers (transceivers), high performance Bit Rate Agile (BRA) modulation-demodulation (Modem) methods and integrated Modems/Transceivers suitable for operation over Non-Linearly Amplified (NLA) power efficient RF systems for enhanced performance and increased capacity bandwidth efficient wireless, PCS, cellular CDMA, TDMA, GSM, OFDM and other efficient communications, broadcasting and telemetry systems are described. Bit Rate Agile (BRA) quadrature demodulators are disclosed. The described receivers are particularly suitable for reception and demodulation of spectral efficient Feher'"'"'s Quadrature Phase Shift Keying (FQPSK), Feher'"'"'s Quadrature Amplitude Modulation (FQAM), Feher'"'"'s Gaussian Minimum Shift Keying (FGMSK) and Feher'"'"'s Minimum Shift Keying (FMSK) signals. Bit rate and RF agile cascaded mis-matched (ACM) demodulation filters Miss-Matched (MM) to that of the modulator filters, Modem Format Selectable (MFS) and Code Selectable (CS) methods for tunable RF frequency embodiments are described. The 2nd generation of FQPSK systems with Adaptive Antenna Arrays (AAA), Pseudo-Error (PE) based Non-Redundant Error Detection (NRED) and PE controlled IF adaptive Feher Equalizers (FE) and smart diversity systems has additional enhanced spectral/RF power efficiency and end-to-end performance advantages.

Claims

1. A structure comprising:

a input port for receiving a plurality of baseband signals;

a baseband signal processing network for receiving the plurality of baseband signals and

providing two or more sets of in-phase and quadrature-phase processed and filtered baseband signals with one of the said in-phase and quadrature-phase signals being cross-correlated to

a quadrature modulator for quadrature modulation; and

a set of two or more transmit amplifiers to amplify and couple the quadrature modulated amplified signals to two or more antennas.

2. A structure comprising:

a input port for receiving baseband signals;

a baseband signal processing network for receiving and splitting the signals and for providing cross-correlated filtered

in-phase and quadrature-phase baseband signals

to two or more quadrature modulators for quadrature modulation; and

a set of two or more transmit amplifiers to amplify and provide the quadrature modulated amplified RF signals to an antenna array.

3. A structure for W-CDMA, CDMA and other spread spectrum QPSK or OQKSK modulated interoperable applications with TDMA systems using GMSK modulated signals comprising:

a input port for receiving baseband signals;

a first baseband signal processing network for receiving, splitting and processing the signals into cross-correlated processed Time Constrained Signal (TCS) waveforms and Long Response (LR) filtered in-phase (1) and quadrature-phase (Q) baseband signals and

a second baseband signal processing network for receiving, splitting and processing the signals into processed Time Constrained Signal (TCS) waveforms and Long Response (LR) filtered in-phase (I) and quadrature-phase (Q) baseband signals and

for providing I and Q signals to a quadrature modulator for quadrature modulation; and

providing the quadrature modulated signals to

one or more amplifiers to amplify the quadrature modulated signal and provide the said signal to one or more antennas.

4. A structure for spread spectrum W-CDMA, CDMA and TDMA Code Selectable (CS) and Modem Format Selectable (MFS) systems comprising:

a input port for receiving baseband signals;

a first baseband signal processing network for receiving and splitting the baseband signals and for providing cross-correlated in-phase (I) and quadrature-phase (Q) baseband signals and

a second baseband signal processing network for receiving and splitting the baseband signals and for providing in-phase (I) and quadrature-phase (Q) baseband signals to

provide said baseband signals to one or more quadrature modulators for quadrature modulation; and

providing the quadrature modulated signals to

a set of one or more transmit amplifiers to amplify the quadrature modulated signal and

provide the quadrature modulated amplified RF signals to one or more antennas