DocumentCode :
1460350
Title :
A cooperative turbo coding scheme for wireless fading channels
Author :
Van Khuong, H. ; Le-Ngoc, Tho
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Volume :
3
Issue :
10
fYear :
2009
fDate :
10/1/2009 12:00:00 AM
Firstpage :
1606
Lastpage :
1615
Abstract :
A coded cooperative transmission scheme based on turbo encoding/decoding, in which only newly generated parity bits of the partner are sent if the user successfully decodes its partner´s information in order to improve bandwidth efficiency is proposed. The proposed encoding structure introduces correlation between users´ data over multiple frames, which offers effectively longer codes and facilitates high-performance iterative multi-user decoding at the destination. Additionally, the iterative decoding over multiple frames can provide time diversity besides spatial diversity inherent in user cooperation even for flat block fading channels. Simulation results show that the proposed scheme significantly outperforms direct transmission for the same transmitted power and bandwidth efficiency.
Keywords :
diversity reception; fading channels; iterative decoding; multiuser channels; coded cooperative transmission; cooperative turbo coding; direct transmission; encoding structure; iterative multiuser decoding; multiple frames; spatial diversity; wireless fading channels;
fLanguage :
English
Journal_Title :
Communications, IET
Publisher :
iet
ISSN :
1751-8628
Type :
jour
DOI :
10.1049/iet-com.2008.0579
Filename :
5259229
Link To Document :
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