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Serial concatenated TCM with an inner accumulate code - Part I: Maximum-likelihood analysis
Dept. of Elec./Comp. Engineering, University of California, La Jolla, CA 92093-0407, United States.
2005 (English)In: IEEE Transactions on Communications, ISSN 0090-6778, Vol. 53, no 1, 64-73 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we propose a serial concatenated trellis-coded modulation system using one or more inner rate-1 accumulate codes and a mapping to a higher order, Gray-labeled signal constellation. As outer codes, we consider repeat codes, single parity-check codes, and convolutional codes. We show that under maximum-likelihood decoding, there exists a signal-to-noise ratio threshold beyond which the bit-error probability goes to zero as the blocklength goes to infinity. We then evaluate the performance for finite blocklengths using a modified union bound. Computer simulations demonstrate that the proposed system, despite its use of a simple rate-1 inner code, achieves performance in additive white Gaussian noise and Rayleigh fading that is comparable to, or better than, that of more complex systems suggested in the literature. © 2005 IEEE.

Place, publisher, year, edition, pages
2005. Vol. 53, no 1, 64-73 p.
Keyword [en]
Accumulate codes, Coding theorems, Fading channels, Iterative decoding, Performance analysis, Serial concatenation, Trellis-coded modulation (TCM)
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-45542DOI: 10.1109/TCOMM.2004.840630OAI: diva2:266438
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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