Joint and tandem source-channel coding with delay constraints

Two common source-channel coding strategies, joint and tandem, are compared on the basis of distortion vs. delay by analyzing specific representatives of each when transmitting analog data samples across a binary symmetric channel. Channel-optimized transform coding is the joint source-channel codin...

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Bibliographic Details
Published in2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221) Vol. 4; pp. 2593 - 2596 vol.4
Main Authors Jongtae Lim, Neuhoff, D.L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2001
Subjects
Channel coding
Delay systems
Entropy coding
Gaussian channels
Gaussian processes
Quantization
Random processes
Reed-Solomon codes
Robustness
Transform coding
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Summary:Two common source-channel coding strategies, joint and tandem, are compared on the basis of distortion vs. delay by analyzing specific representatives of each when transmitting analog data samples across a binary symmetric channel. Channel-optimized transform coding is the joint source-channel coding strategy; transform coding with Reed-Solomon coding is the tandem strategy. For each strategy, formulas for the mean-squared error and delay are found and used to minimize distortion subject to a delay constraint, for data modeled as Gauss-Markov. The results of such optimizations suggest there is a threshold such that when the permissible delay is above this threshold, tandem coding is better, and when below the threshold, channel-optimized transform coding is better.
ISBN:0780370414
9780780370418
ISSN:1520-6149
DOI:10.1109/ICASSP.2001.940532