DocumentCode :
1328303
Title :
Signal Space Diversity Techniques with Fast Decoding Based on MDS Codes
Author :
Shang, Yue ; Wang, Dong ; Xia, Xiang-Gen
Author_Institution :
Signal Process. & Commun. Group, MathWorks, Natick, MA, USA
Volume :
58
Issue :
9
fYear :
2010
fDate :
9/1/2010 12:00:00 AM
Firstpage :
2525
Lastpage :
2536
Abstract :
In wireless communication systems, signal space diversity techniques are usually adopted to combat channel fading by exploiting time diversity, frequency diversity, spatial diversity or a combination of them. Most existing schemes to achieve signal space diversity are based on linear constellation spreading. In this paper, we propose a novel nonlinear signal space diversity technique based on maximum distance separable (MDS) codes. The new technique provides a design flexibility for almost any number of diversity channels and desired diversity orders. We also propose a simple and suboptimal diversity channel selection (DCS) decoding for our new scheme. DCS decoding can greatly reduce the decoding complexity at a cost of marginal performance loss relative to the optimal detection while keeping the diversity order. Simulation results show that with the same throughput but a lower decoding and implementation complexity, our scheme can have superior performance than the optimal linear spreading schemes over either independent fading or additive white Gaussian noise (AWGN) channels.
Keywords :
AWGN channels; decoding; diversity reception; fading channels; radiocommunication; AWGN channels; additive white Gaussian noise channels; channel fading; fast decoding; independent fading channels; linear constellation spreading; maximum distance separable codes; nonlinear signal space diversity technique; optimal linear spreading schemes; suboptimal diversity channel selection decoding; wireless communication systems; Complexity theory; Construction industry; Decoding; Encoding; Joints; Labeling; Modulation; Coding gain; Euclidean distance; Latin square; MDS codes; OFDM; diversity order; frequency diversity; modulation diversity; product distance; signal space diversity; spatial diversity; time diversity;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2010.09.090569
Filename :
5577802
Link To Document :
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