QAM and GMSK modulation methods
First Claim
1. A method for:
- filtering a first bit rate signal by a first transmit filter and modulating by a modulator said first bit rate filtered signal into a Gaussian Minimum Shift Keyed (GMSK) modulated signal;
filtering a second bit rate signal by a second transmit filter and modulating by said modulator said second bit rate signal into a Quadrature Amplitude Modulated (QAM) signal, wherein said second bit rate is different from said first bit rate;
nonlinearly amplifying said GMSK modulated signal and for providing said GMSK amplified signal to a first transmitter for transmission of said GMSK amplified signal;
linearly amplifying said QAM signal and for providing amplified signal to a second transmitter for transmission of the linearly amplified QAM modulated signal, wherein said second transmitter is operated in a different Radio Frequency (RF) band than said first transmitter; and
receiving and demodulating by a diversity receiver and a demodulator a transmitted modulated signal.
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Abstract
Filtering and modulating a first bit rate signal into a Gaussian filtered Gaussian Minimum Shift Keyed (GMSK) modulated signal and a second bit rate signal into a Quadrature Amplitude Modulated (QAM) signal. A method for nonlinearly and linearly amplifying GMSK and QAM signals. A diversity receiver and demodulator method for receiving and demodulating transmitted modulated signals. Processing, transmit baseband filtering and modulating signals for providing cross-correlated in-phase and quadrature-phase Gaussian filtered Gaussian Minimum Shift Keying (GMSK) and other cross-correlated modulated signals and spread spectrum Quadrature Phase Shift Keying (QPSK) modulated signals. Transmit processing and filtering for providing time division multiplexed (TDM) Gaussian filtered baseband signal and Orthogonal Frequency Division Multiplexed (OFDM) in-phase and quadrature-phase baseband modulated signal to a cellular network and to separate wireless network. Diversity receiver and demodulator method with multiple antennas for providing demodulated cross-correlated in-phase and quadrature-phase filtered signals.
334 Citations
18 Claims
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1. A method for:
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filtering a first bit rate signal by a first transmit filter and modulating by a modulator said first bit rate filtered signal into a Gaussian Minimum Shift Keyed (GMSK) modulated signal; filtering a second bit rate signal by a second transmit filter and modulating by said modulator said second bit rate signal into a Quadrature Amplitude Modulated (QAM) signal, wherein said second bit rate is different from said first bit rate; nonlinearly amplifying said GMSK modulated signal and for providing said GMSK amplified signal to a first transmitter for transmission of said GMSK amplified signal; linearly amplifying said QAM signal and for providing amplified signal to a second transmitter for transmission of the linearly amplified QAM modulated signal, wherein said second transmitter is operated in a different Radio Frequency (RF) band than said first transmitter; and receiving and demodulating by a diversity receiver and a demodulator a transmitted modulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for:
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processing, filtering and modulating in a processor, a first transmit filter and a modulator a first bit rate signal into a cross-correlated in-phase and quadrature-phase Gaussian filtered Gaussian Minimum Shift Keying (GMSK) modulated signal; processing, filtering and modulating in a processor, a second transmit filter and a modulator a second bit rate signal into a Quadrature Amplitude Modulated (QAM) signal, wherein said second bit rate is different from said first bit rate; amplifying in an amplifier and providing to a transmitter for transmission said cross-correlated in-phase and quadrature-phase filtered GMSK modulated signal; amplifying in an amplifier and providing to a transmitter for transmission said QAM modulated signal, wherein said GMSK modulated signal is transmitted in a different band than said QAM signal; and receiving and demodulating in a receiver and a demodulator a transmitted modulated signal, wherein said signal receiving is by two antennas. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for:
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processing cross-correlating and filtering in a first processor, a first cross-correlator and a first transmitter filter a first bit rate signal into a first bit rate processed cross-correlated filtered in-phase and quadrature-phase baseband signal; processing cross-correlating and filtering in a second processor, a second cross-correlator and a second transmitter filter a second bit rate signal into a second bit rate and third bit rate processed cross-correlated filtered in-phase and quadrature-phase baseband signal, said first bit rate is different from said second bit rate and said third bit rate is different from said first bit rate and from said second bit rate; modulation in a quadrature modulator of said first bit rate processed cross-correlated signal for providing a quadrature modulated signal to a first transmitter; transmission in said first transmitter of said quadrature modulated signal; modulation and transmission of said second bit rate and third bit rate processed filtered baseband signal in said quadrature modulator and a second transmitter; reception and demodulation in a receiver and demodulator of said transmitted first, second and third bit rate signal, said receiver and said demodulator for reception and demodulation of the first bit rate signal provides cross-correlated in-phase and quadrature-phase signal and comprises an adaptive equalizer for adaptive equalization of the received first bit rate signal and a filter which is mis-matched to said first filter. - View Dependent Claims (16, 17, 18)
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Specification