RECEIVERS AND DEMODULATORS FOR TDMA AND OTHER MODULATED SYTEMS
First Claim
1. A receiver and demodulation system comprising:
- a receiver network for receiving a first filtered modulated transmitted signal in a first RF band and a second modulated transmitted signal in a second RF band and for providing said first and second received signals to a demodulator;
a demodulator and baseband filter for demodulating and filtering the first filtered modulated received signal and for providing filtered demodulated baseband signal by said baseband filter which is mis-matched to the filter of the said first filtered modulated transmitted signal and demodulating the second modulated signal providing a demodulated baseband signal; and
a selector for selecting either the first or the second demodulated baseband signal.
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Abstract
Receiver network for receiving a first filtered modulated transmitted signal in a first RF band and a second modulated transmitted signal in a second RF band and for providing received signals to one or more demodulators. A demodulator and baseband filter for demodulating and filtering the first filtered modulated received signal and for providing filtered demodulated baseband signal by a baseband filter mis-matched to the filter of the first filtered modulated transmitted signal and demodulating the second modulated signal providing a demodulated baseband signal and a selector for selecting either the first or the second demodulated baseband signal. A receiver and demodulation system receiving a first TDMA modulated signal having a first bit rate and for receiving a second modulated signal having a second bit rate and for providing the received signals to a one or more demodulators and for providing cross-correlated demodulated in-phase and quadrature-phase baseband signals and demodulating the second bit rate modulated signal and providing a demodulated baseband signal.
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Citations
17 Claims
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1. A receiver and demodulation system comprising:
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a receiver network for receiving a first filtered modulated transmitted signal in a first RF band and a second modulated transmitted signal in a second RF band and for providing said first and second received signals to a demodulator;
a demodulator and baseband filter for demodulating and filtering the first filtered modulated received signal and for providing filtered demodulated baseband signal by said baseband filter which is mis-matched to the filter of the said first filtered modulated transmitted signal and demodulating the second modulated signal providing a demodulated baseband signal; and
a selector for selecting either the first or the second demodulated baseband signal. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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2. A receiver and demodulation system comprising:
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a receiver network for receiving a first TDMA modulated signal having a first bit rate and for receiving a second modulated signal having a second bit rate and for providing the received signals to a demodulator;
a demodulator demodulating the first modulated signal and providing cross-correlated demodulated in-phase and quadrature-phase baseband signals and demodulating the second bit rate modulated signal and providing a demodulated baseband signal; and
a selector for selecting either the first or the second demodulated signals. - View Dependent Claims (10, 11, 12, 13)
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3. A receiver and demodulation system comprising:
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a receiver network for receiving a first TDM or TDMA modulated signal having a first modulation format, first bit rate and first RF spectrum and for receiving a second modulated signal having a second modulation format, second bit rate and second RF spectrum and for providing the received signals to a demodulator system;
a demodulator system comprising two or more demodulators for demodulating the first modulated signal and providing cross-correlated demodulated in-phase and quadrature-phase baseband signals and demodulating the second modulated signal and providing a demodulated baseband signal; and
a selector for selecting either the first or the second demodulated signal. - View Dependent Claims (14, 15, 16, 17)
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Specification