High speed communications system
First Claim
Patent Images
1. An apparatus comprising:
- a plurality of encoders, each encoder configured to receive a corresponding set of information bits and to generate a set of baseband-encoded symbols representing a vector codeword for transmission over multiple wires, wherein a number of wires corresponds to a number of symbols in the set of baseband-encoded symbols;
one or more modulation circuits, each modulation circuit configured to operate on a corresponding set of baseband-encoded symbols, and using a respective unique carrier frequency, to generate a set of carrier-modulated encoded symbols, each modulation circuit having a respective modulator configured to modulate a corresponding baseband-encoded symbol to generate a corresponding carrier-modulated encoded symbol for transmission over a respective wire of the multiple wires; and
,a summation circuit configured to generate a set of wire-specific outputs, each wire-specific output representing a sum of a respective symbol of the baseband-encoded symbols and a respective symbol of at least one set of carrier-modulated symbols, the summation circuit configured to provide the wire-specific outputs for transmission over the multiple wires.
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Abstract
Transmission of baseband and carrier-modulated vector codewords, using a plurality of encoders, each encoder configured to receive information bits and to generate a set of baseband-encoded symbols representing a vector codeword; one or more modulation circuits, each modulation circuit configured to operate on a corresponding set of baseband-encoded symbols, and using a respective unique carrier frequency, to generate a set of carrier-modulated encoded symbols; and, a summation circuit configured to generate a set of wire-specific outputs, each wire-specific output representing a sum of respective symbols of the carrier-modulated encoded symbols and at least one set of baseband-encoded symbols.
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Citations
20 Claims
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1. An apparatus comprising:
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a plurality of encoders, each encoder configured to receive a corresponding set of information bits and to generate a set of baseband-encoded symbols representing a vector codeword for transmission over multiple wires, wherein a number of wires corresponds to a number of symbols in the set of baseband-encoded symbols; one or more modulation circuits, each modulation circuit configured to operate on a corresponding set of baseband-encoded symbols, and using a respective unique carrier frequency, to generate a set of carrier-modulated encoded symbols, each modulation circuit having a respective modulator configured to modulate a corresponding baseband-encoded symbol to generate a corresponding carrier-modulated encoded symbol for transmission over a respective wire of the multiple wires; and
,a summation circuit configured to generate a set of wire-specific outputs, each wire-specific output representing a sum of a respective symbol of the baseband-encoded symbols and a respective symbol of at least one set of carrier-modulated symbols, the summation circuit configured to provide the wire-specific outputs for transmission over the multiple wires. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising
receiving information bits and responsively generating at least two sets of baseband symbols, each set of baseband symbols representing a corresponding baseband vector codeword for transmission over a plurality of wires, wherein a number of wires corresponds to a number of symbols in each set of baseband symbols; -
generating at least one carrier-modulated codeword by modulating at least one set of baseband symbols with at least one carrier, wherein each symbol in the at least one set of baseband symbols is modulated using a respective modulator; and
,transmitting, in parallel over the plurality of wires, a codeword superposition signal representing a sum of a baseband codeword and at least one carrier-modulated codeword. - View Dependent Claims (13, 14)
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15. An apparatus comprising:
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a plurality of Ensemble Non-Return-to-Zero (ENRZ) mixers, each ENRZ mixer configured to receive a set of wire-specific outputs and responsively generate a respective superposition subchannel representing a superposition of a baseband subchannel and at least one carrier-modulated subchannel, wherein each ENRZ mixer is configured to perform a subchannel-specific mixing operation; a plurality of filters configured to parse the plurality of superposition subchannels into a corresponding set of baseband subchannel signals and at least one set of carrier-modulated subchannel signals; at least one balanced mixer circuit configured to convert each of the at least one set of carrier-modulated subchannel signals into a set of demodulated-baseband subchannel signals; and a plurality of samplers configured to sample the set of baseband subchannel signals and the at least one set of demodulated-baseband signals to produce a set of decoded output bits. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification