DocumentCode :
1831180
Title :
A Non-orthogonal Distributed Space-Time Coded Protocol Part I: Signal Model and Design Criteria
Author :
Susinder Rajan, G. ; Sundar Rajan, B.
Author_Institution :
Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore
fYear :
2006
fDate :
22-26 Oct. 2006
Firstpage :
385
Lastpage :
389
Abstract :
In this- two-part series of papers, a generalized non-orthogonal amplify and forward (GNAF) protocol which generalizes several known cooperative diversity protocols is proposed. Transmission in the GNAF protocol comprises of two phases - the broadcast phase and the cooperation phase. In the broadcast phase, the source broadcasts its information to the relays as well as the destination. In the cooperation phase, the source and the relays together transmit a space-time code in a distributed fashion. The GNAF protocol relaxes the constraints imposed by the protocol of Jing and Hassibi on the code structure. In part-I of this paper, a code design criteria is obtained and it is shown that the GNAF protocol is delay efficient and coding gain efficient as well. Moreover the GNAF protocol enables the use of sphere decoders at the destination with a non-exponential maximum likelihood (ML) decoding complexity. In part-II, several low decoding complexity code constructions are studied and a lower bound on the diversity-multiplexing gain tradeoff of the GNAF protocol is obtained
Keywords :
diversity reception; matrix algebra; maximum likelihood decoding; protocols; space-time codes; GNAF protocol; broadcast phase; code design criteria; coding gain efficient; cooperation phase; cooperative diversity protocols; delay efficient; diversity-multiplexing gain; generalized nonorthogonal amplify and forward protocol; nonexponential maximum likelihood decoding complexity; nonorthogonal distributed space-time coded protocol; signal model; sphere decoders; Antenna arrays; Bismuth; Broadcasting; Delay; Information theory; Maximum likelihood decoding; Protocols; Relays; Signal design; Space time codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory Workshop, 2006. ITW '06 Chengdu. IEEE
Conference_Location :
Chengdu
Print_ISBN :
1-4244-0067-8
Electronic_ISBN :
1-4244-0068-6
Type :
conf
DOI :
10.1109/ITW2.2006.323826
Filename :
4119324
Link To Document :
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