On the analysis of the performance of coded modulation schemes for unequal error protection

A method of analysis for comparing the performance of time-division-coded modulation and superposition-coded modulation schemes with unequal error protection has been proposed. The performance of practical channel codes was modeled heuristically by using a signal-to-noise ratio loss factor /spl lamb...

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Bibliographic Details
Published in:IEEE transactions on communications 2002-08, Vol.50 (8), p.1205-1208
Main Authors: Pellenz, M.E., Portugheis, J.
Format: Article
Language:English
Subjects:
Additive white noise
AWGN
Channel coding
Error correction codes
Gaussian noise
Modulation coding
Performance analysis
Performance loss
Protection
Signal to noise ratio
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Summary:A method of analysis for comparing the performance of time-division-coded modulation and superposition-coded modulation schemes with unequal error protection has been proposed. The performance of practical channel codes was modeled heuristically by using a signal-to-noise ratio loss factor /spl lambda/ and it was shown that the superiority of superposition-coded modulation depends on the degree of inequality in protection prescribed. A different approach, using the channel cutoff rate R/sub 0/ instead of /spl lambda/, is proposed here. Results of the analysis of the performance of both approaches are compared, and they are also compared to those results obtained from practical design examples.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2002.801464