Method and apparatus for transmitting signals having a carrier-interferometry architecture
First Claim
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1. A method of generating Carrier Interferometry signals including:
- providing for redundantly modulating a plurality of carrier signals with a plurality of data symbols wherein a plurality of phase relationships map each of the plurality of data symbols to at least one of a plurality of substantially orthogonal superposition signals, and providing for combining the plurality of carrier signals to generate the plurality of substantially orthogonal superposition signals.
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Abstract
Transmission waveforms are synthesized from orthogonal subcarriers using appropriate combinations of complex sub-carrier codes. This allows conventional single-carrier signaling (such as GSM and CDMA transmission protocols) to be generated and received using a multicarrier platform that is similar to OFDM. Carrier interferometry provides unprecedented bandwidth efficiency and enables substantial improvements in interference rejection, power efficiency, and system versatility.
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Citations
20 Claims
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1. A method of generating Carrier Interferometry signals including:
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providing for redundantly modulating a plurality of carrier signals with a plurality of data symbols wherein a plurality of phase relationships map each of the plurality of data symbols to at least one of a plurality of substantially orthogonal superposition signals, and providing for combining the plurality of carrier signals to generate the plurality of substantially orthogonal superposition signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multi-carrier signal comprising:
at least one set of complex carrier weights embodied in a predetermined plurality of carriers and adapted to map a plurality of data symbols to a plurality of pulse positions for producing a sequence of data-modulated pulses with spectral components characterized by the predetermined plurality of carriers. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A Carrier Interferometry signal generator including:
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a multi-carrier generator adapted to generate a multi-carrier signal, a modulator adapted to modulate at least one information signal onto the multi-carrier signal, and a superposition controller adapted to provide the multi-carrier signal with at least one predetermined phase relationship to generate a time-domain signal characterized by a plurality of data-modulated pulse waveforms. - View Dependent Claims (17, 18, 19, 20)
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Specification