Low complexity multi-channel modulation method and apparatus

Details Low complexity multi-channel modulation method and apparatus Low complexity multi-channel modulation method and apparatus

2011-01-25

2011-01-25

Pathak, Sudhanshu C (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S316000, C375S265000, C375S278000, C375S341000

Reexamination Certificate

active

07876838

ABSTRACT:
A digital communications apparatus for processing a data vector includes a transmitter for communicating with a receiver across a channel having channel characteristics. A transmit vector is computed from the data vector and from values defining a basis for a transmit lattice. The transmit lattice defines a set of transmit symbols of length N and is related to an orthogonal receive lattice by the channel characteristics. The computation is performed according to an algorithm of order N complexity.

REFERENCES:
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patent: 5982818 (1999-11-01), Krueger et al.
patent: 6157938 (2000-12-01), Wu et al.
patent: 2006/0067414 (2006-03-01), Vadde
“A Low-Complexity Latice-Based Low-PAR Transmission Scheme for DSL Channels,” to Collings et al. May 2004. (10 pages).
“Vectored Transmission for Digital Subscriber Line Systems,” to Ginis et al. Jun. 2002. (20 pages).

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