High speed communications system
AssigneeKandou Labs, S.A.
InventorsAli Hormati, Armin Tajalli, Amin Shokrollahi
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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.
Claims20
A method comprising:
- receiving, at a plurality of orthogonal subchannel multi-input comparators (MICs), a set of wire-specific inputs, each wire-specific input carrying a combination of a respective baseband symbol of a baseband codeword and at least one respective carrier-modulated symbol of at least one carrier-modulated codeword;
- and
- generating a plurality of superposition subchannel signals, each superposition subchannel signal generated by a corresponding orthogonal subchannel MIC forming a respective subchannel-specific linear combination of the set of wire-specific inputs, each superposition subchannel signal comprising a respective superposition of (i) a baseband subchannel signal and (ii) one or more carrier-modulated subchannel signals, the baseband subchannel signal and the one or more carrier-modulated subchannel signals associated with the baseband codeword and the at least one respective carrier-modulated codeword, respectively;
- and
- parsing, using a plurality of filters, each superposition subchannel signal of the plurality of superposition subchannel signals into the baseband subchannel signal and one or more temporally misaligned carrier-modulated subchannel signals, and separately sampling the baseband subchannel signal and the one or more temporally misaligned carrier-modulated subchannel signals;
- wherein
- the plurality of filters introducing one or more respective delays between at least two subchannel signals of the baseband subchannel signal and the one or more carrier-modulated subchannel signals.
An apparatus comprising:
- a plurality of wires of a multi-wire bus, the plurality of wires configured to carry a set of wire-specific inputs, each wire-specific input comprising a combination of a respective baseband symbol of a baseband codeword and at least one respective carrier-modulated symbol of at least one carrier-modulated codeword;
- a plurality of orthogonal subchannel multi-input comparators (MICs) configured to generate a plurality of superposition subchannel signals, each superposition subchannel signal generated by a corresponding orthogonal subchannel MIC forming a respective subchannel-specific linear combination of the set of wire-specific inputs, each superposition subchannel signal comprising a respective superposition of (i) a baseband subchannel signal and (ii) one or more carrier-modulated subchannel signals, the baseband subchannel signal and the one or more carrier-modulated subchannel signals associated with the baseband codeword and the at least one respective carrier-modulated codeword, respectively;
- a plurality of filters configured to parse each superposition subchannel signal of the plurality of superposition subchannel signals into the baseband subchannel signal and one or more temporally misaligned carrier-modulated subchannel signals;
- and
- a plurality of samplers configured to separately sample the baseband subchannel signal and one or more temporally misaligned carrier-modulated subchannel signals.
Dependencies are inferred from the claim text.