METHODS AND SYSTEMS FOR TRANSMISSION OF MULTIPLE MODULATED SIGNALS OVER WIRELSS NETWORKS
First Claim
1. A transmitter system comprising:
- a first signal processor for receiving a digital binary input signal and formatting said input signal into at least two baseband signals, each including an I and a Q component, wherein the first signal processor is configured to perform a serial to parallel conversion of the digital binary input signal;
a second signal processor for further processing and shaping said I and Q components of each said baseband signals, including limiting the amplitude peaks of said baseband signals;
a quadrature modulator for each of said baseband signals for modulating said I and Q components to provide a first and a second quadrature modulated RF signal;
a power amplifier for each of said baseband signals for amplifying said quadrature modulated RF signals to provide amplified RF signals; and
an antenna array with at least two antenna elements for transmitting said respective amplified RF signals.
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Accused Products
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 mismatched 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
15 Claims
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1. A transmitter system comprising:
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a first signal processor for receiving a digital binary input signal and formatting said input signal into at least two baseband signals, each including an I and a Q component, wherein the first signal processor is configured to perform a serial to parallel conversion of the digital binary input signal; a second signal processor for further processing and shaping said I and Q components of each said baseband signals, including limiting the amplitude peaks of said baseband signals; a quadrature modulator for each of said baseband signals for modulating said I and Q components to provide a first and a second quadrature modulated RF signal; a power amplifier for each of said baseband signals for amplifying said quadrature modulated RF signals to provide amplified RF signals; and an antenna array with at least two antenna elements for transmitting said respective amplified RF signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A transmitter system comprising:
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a first signal processor for receiving an input signal and formatting said input signal into a plurality of baseband signals each including a set of I and a Q components; a second signal processor for further processing and shaping said baseband signals, including limiting the amplitude peaks of said baseband signals; a plurality of quadrature modulators, each for modulating a respective one of said baseband signals to provide a plurality of quadrature modulated RF signals; a plurality of power amplifiers, each for amplifying said quadrature modulated RF signals, to provide a plurality of amplified RF signals; and a plurality of antennae for transmitting said amplified RF signals. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification