On universal coding for parallel Gaussian channels

Maryam Modir Shanechi, Uri Erez, Gregory Wornell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two classes of approximately universal codes are developed for parallel Gaussian channels whose state information is not available at the encoder. Both architectures convert the channel into a set of scalar additive white Gaussian noise (AWGN) channels to which good AWGN base codes can be applied, and both are layered schemes used in conjunction with successive interference cancellation to keep decoding complexity low. The first construction uses a concatenated code structure, and with perfect base codes achieves an arbitrarily high fraction of capacity in the limit of high SNR. The second construction uses a layer-dither-repeat structure, and with perfect base codes can achieve better than 90% of capacity at typical target spectral efficiencies, corresponding to a roughly 1 dB gap to capacity.

Original languageEnglish
Title of host publicationProceedings - 2008 International Zurich Seminar on Communications, IZS
Pages94-97
Number of pages4
DOIs
StatePublished - 2008
Event2008 International Zurich Seminar on Communications, IZS - Zurich, Switzerland
Duration: 12 Mar 200814 Mar 2008

Publication series

NameInternational Zurich Seminar on Digital Communications

Conference

Conference2008 International Zurich Seminar on Communications, IZS
Country/TerritorySwitzerland
CityZurich
Period12/03/0814/03/08

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