Joint source-channel coding over Gaussian channels with intersymbol interference using tree structured vector quantization

Venceslav Kafedziski, Darryl Morrell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The transmission of a vector quantized Markov source over channels with intersymbol interference (ISI) using M-dimensional modulation procedures is considered. The source is quantized using a channel matched tree structured vector quantizer (CM-TSVQ) in which the VQ design is performed with respect to channel error matrices computed by simulation. The CM-TSVQ is combined with a recursive block MAP receiver that provides soft decisions and accounts for the residual redundancy left at the vector quantizer output. In order to reduce the complexity of the decoding, computation in log-domain of the probability metrics is used. The M dimensional modulation is implemented as M/2 two-dimensional QAM. Optimum power allocation between QAM signal sets is determined. Results are presented for the case of two stage TSVQ, using 2-QAM, and are compared to the OPTA (optimum performance theoretically attainable) bound for gaussian channel with and without ISI.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
PublisherIEEE
Pages793-797
Number of pages5
Volume1
StatePublished - 1997
EventProceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2) - Pacific Grove, CA, USA
Duration: Nov 3 1996Nov 6 1996

Other

OtherProceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2)
CityPacific Grove, CA, USA
Period11/3/9611/6/96

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

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    Kafedziski, V., & Morrell, D. (1997). Joint source-channel coding over Gaussian channels with intersymbol interference using tree structured vector quantization. In Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 1, pp. 793-797). IEEE.