Low decoding complexity STBC design for turbo coded broadcast transmission

In this paper, we study the Space Time Block Code (STBC) called Matrix D (MD) that enjoys low-complexity detection for broadcast transmission. Such a transmission uses a powerful channel code like a turbo code. To produce Log-Likelihood Ratio (LLR) for the channel decoder, we propose a soft Maximum...

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Bibliographic Details
Published in2011 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) pp. 1 - 5
Main Authors El Falou, A., Nour, C. Abdel, Langlais, C., Douillard, C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2011
Subjects
Bit error rate
Complexity theory
Detectors
Gain
MIMO
Modulation
Signal to noise ratio
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Summary:In this paper, we study the Space Time Block Code (STBC) called Matrix D (MD) that enjoys low-complexity detection for broadcast transmission. Such a transmission uses a powerful channel code like a turbo code. To produce Log-Likelihood Ratio (LLR) for the channel decoder, we propose a soft Maximum Likelihood (ML) detector for MD STBC while keeping the same low-complexity order as the original one. Then, we optimize the MD STBC for low Signal to Noise Ratio (SNR) under the trace criterion. The performance of the concatenation of a turbo code with optimized MD is given. A gain of almost 0.2 dB is obtained between optimized MD and original MD. However, the proposed code loses its full-diversity as its determinant is equal to 0. Then, a tradeoff angle is chosen and a low-complexity detection full-rate full-diversity STBC is designed for turbo coded broadcast transmission which performs well for both low and high SNR.
ISBN:161284121X
9781612841212
ISSN:2155-5044
2155-5052
DOI:10.1109/BMSB.2011.5954883