DocumentCode
811594
Title
Full-rate distributed space-time codes for cooperative communications
Author
Zhang, Wei ; Letaief, Khaled Ben
Author_Institution
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW
Volume
7
Issue
7
fYear
2008
fDate
7/1/2008 12:00:00 AM
Firstpage
2446
Lastpage
2451
Abstract
A full-rate distributed space-time (ST) code design is proposed for amplify-and-forward cooperative wireless channels. By employing a signal space diversity technique at the source node and a unique signature vector at each relay node, the proposed distributed ST codes can achieve full cooperative diversity and full rate. The achievable diversity gain is shown to be M + 1, where M is the number of relay nodes. Optimal power allocation is also proposed to maximize the coding gain under a total power constraint.
Keywords
space-time codes; wireless channels; ST; cooperative communications; full-rate distributed space-time codes; power allocation; wireless channels; Antenna arrays; Costs; Diversity methods; Error analysis; Frame relay; OFDM modulation; Power system modeling; Power system relaying; Receiving antennas; Space time codes;
fLanguage
English
Journal_Title
Wireless Communications, IEEE Transactions on
Publisher
ieee
ISSN
1536-1276
Type
jour
DOI
10.1109/TWC.2008.070117
Filename
4570208
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