Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems
First Claim
1. A structure comprising:
- a input port for receiving baseband signals; and
a baseband signal processing network for receiving said baseband signals and providing cross-correlated bit rate agile cascaded mis-matched (ACM) processed and filtered in-phase and quadrature-phase baseband signals.
3 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
Spectral efficient transmitters-receivers (transceivers), modulation-demodulation (Modem) methods, architectures, structures and implementation technologies for enhanced performance and increased capacity CDMA, TDMA, GSM,OFDM, CMA, FDM and other wireless and wired communications, broadcasting and telemetry systems and integrated Modems/Transceivers suitable for operation over Non-Linearly Amplified (NLA) power efficient RF systems are described. Cross-correlated cascaded Time Constrained Signal (TCS) response processors and Long Response (LR) filtered Bit Rate Agile (BRA) in phase (I) and quadrature phase (Q) baseband signals are disclosed. These spectral efficient high performance processing, transmitting and receiving methods are designated as Feher'"'"'s Quadrature Phase Shift Keying (FQPSK) Transceivers. Integrated Modem and transceiver technologies also disclosed herein and designated as Feher'"'"'s Quadrature Amplitude Modulation (FQAM), Feher'"'"'s Gaussian Minimum Shift Keying (FGMSK) and Feher'"'"'s Minimum Shift Keying (FMSK) are subsets of 2nd generation FQPSK systems. Bit rate and RF agile embodiments are described. The 2nd generation of FQPSK systems with Adaptive Antenna Arrays (AAA) and adaptive Feher Equalizers (FE) and smart diversity systems has additional enhanced spectral/RF power efficiency and end-to-end performance advantages.
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Citations
3 Claims
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1. A structure comprising:
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a input port for receiving baseband signals; and
a baseband signal processing network for receiving said baseband signals and providing cross-correlated bit rate agile cascaded mis-matched (ACM) processed and filtered in-phase and quadrature-phase baseband signals.
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2. A signal processing, modulation, transmission, signal reception and demodulation system, for Bit Rate Agile (BRA), Modulation Demodulation (Modem) Format Selectable (MFS) and Code Selectable (CS) systems comprising:
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(a) means for input port for receiving input data;
(b) splitter means serving for BRA, MFS and CS signal splitting, having an input coupled to said input port, and serving to split said input data into baseband signal streams;
(c) means for BRA, MFS and CS baseband signal processing;
(d) means for receiving said baseband signal stream and providing for BRA, MFS and CS systems changeable amounts of cross-correlation between Time Constrained Signal (TCS) response processors combined with TCS and Long Response (LR) processors;
(e) means for cross-correlated processed in phase (I) and quadrature (Q) phase baseband signals for quadrature modulation to the I and Q input ports of the Quadrature Modulator (QM);
(f) means for an interface unit to provide said quadrature modulated data to the transmission medium;
(g) means for a receiver interface unit for connection of the received cross-correlated signal to the BRA and MFS demodulator;
(h) means for BRA, MFS and CS demodulation; and
(i) means for post-demodulation Mis-Matched (MM) filtering of the BRA MFS and CS demodulated signals in which the MM demodulator filters are mismatched to that of the BRA and MFS filters.
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3. A structure comprising:
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a input port for receiving baseband signals; and
a baseband signal processing network for receiving said baseband signals and providing cross-correlated bit rate agile Peak Limited (PL) in-phase and quadrature-phase baseband signals.
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Specification