Spread spectrum, cross-correlated and filtered modulated systems
First Claim
Patent Images
1. A system comprising:
- a first modulator for receiving spread spectrum in-phase and quadrature-phase baseband signals and modulating the spread spectrum signals;
a second modulator for receiving cross-correlated in-phase and quadrature-phase baseband signals and modulating the cross-correlated signals; and
a connection circuit for providing either the modulated spread spectrum signal or the modulated cross-correlated signal or both the modulated spread spectrum signal and the modulated cross-correlated signals to one or more antennas for signal transmission.
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Abstract
Spread Spectrum baseband signals, in-phase and quadrature-phase cross-correlated baseband signals and other filtered baseband signals connected to modulators for providing modulated signals. Modulator selection for modulated signal selection or for multiple modulated signals provided to one or more antennas for signal transmission.
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Citations
4 Claims
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1. A system comprising:
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a first modulator for receiving spread spectrum in-phase and quadrature-phase baseband signals and modulating the spread spectrum signals;
a second modulator for receiving cross-correlated in-phase and quadrature-phase baseband signals and modulating the cross-correlated signals; and
a connection circuit for providing either the modulated spread spectrum signal or the modulated cross-correlated signal or both the modulated spread spectrum signal and the modulated cross-correlated signals to one or more antennas for signal transmission.
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2. A system comprising:
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a first quadrature modulator for modulation of in-phase and quadrature-phase baseband spread spectrum signals;
a second modulator for modulation of a filtered baseband signal connected to the input baseband port of the second modulator; and
a connection circuit for providing either the spread spectrum modulated signal or the filtered modulated signal or both the modulated spread spectrum signal and the modulated filtered signals to the transmitter.
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3. A system comprising:
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a first modulator for modulation of a spread spectrum processed signal connected to the input baseband port of the first modulator;
a second modulator for modulation of a filtered baseband signal connected to the input baseband port of the second modulator; and
a connection circuit for providing either the spread spectrum modulated signal or the filtered modulated signal or both the modulated spread spectrum signal and the modulated filtered signals to one or more antennas for signal transmission.
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4. A system comprising:
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a modulator for modulation of a spread spectrum processed signal connected to an input baseband port of a modulator and for modulation of a filtered baseband signal connected to an input baseband port of said modulator; and
a connection circuit for providing either the spread spectrum modulated signal or the filtered modulated signal or both the modulated spread spectrum signal and the modulated filtered signals to the transmitter.
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Specification