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STCDD Cooperative Transmission Scheme for Improvement of Reliability in OFDM Based UWB System  

Song, Hyoung-Kyu (세종대학교 정보통신공학과 uT통신연구소)
Song, Jin-Hyuk (세종대학교 정보통신공학과 uT통신연구소)
Yoon, Jae-Seon (세종대학교 정보통신공학과 uT통신연구소)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.6A, 2010 , pp. 547-554 More about this Journal
Abstract
Recently, the multi-band orthogonal frequency division multiplexing(MB-OFDM) system, one of UWB system, can satisfy the requirement and can be applied to various wireless communication services because ultra-wideband(UWB) is a wireless communication technique that supports high data rate with low power. In this paper, the method applying Alamouti's space time block code(STBC) and cyclic delay diversity(CDD) is proposed. The proposed method can be easily applied with arbitrary number of relays and only needs two time slots of quasi stationary assumption. And it is applied to the MB-OFDM system. Second, an optimal relaying scheme based on decode-and-forward(DF) method is proposed which is provides good error performance compared to conventional schemes.
Keywords
Cooperative; Cooperation; Relay; MB-OFDM; MIMO;
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