The posterior matching feedback scheme for joint source-channel coding with bandwidth expansion

Ofer Shayevitz*, Meir Feder

*Corresponding author for this work

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

Abstract

When transmitting a Gaussian source over an AWGN channel with an input power constraint and a quadratic distortion measure, it is well known that optimal performance can be obtained using an analog joint source-channel scalar scheme which merely scales the input and output signals. In the case of bandwidth expansion, such a joint source-channel analog scheme attaining optimal performance is no longer simple. However, when feedback is available a simple and sequential analog linear procedure based on the Schalkwijk-Kailath scheme for communication, is optimal. Recently, we have introduced a fundamental feedback communication scheme, termed posterior matching, which generalizes the Schalkwijk-Kailath scheme to arbitrary memoryless channels and input distributions. In this paper, we show how the posterior matching scheme can be adapted to the joint source-channel coding setting with bandwidth expansion and a general distortion measure, when feedback is available.

Original languageEnglish
Title of host publicationProceedings - 2009 Data Compression Conference, DCC 2009
Pages83-92
Number of pages10
DOIs
StatePublished - 2009
Event2009 Data Compression Conference, DCC 2009 - Snowbird, UT, United States
Duration: 16 Mar 200918 Mar 2009

Publication series

NameProceedings - 2009 Data Compression Conference, DCC 2009

Conference

Conference2009 Data Compression Conference, DCC 2009
Country/TerritoryUnited States
CitySnowbird, UT
Period16/03/0918/03/09

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