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A Receive Diversity Combining Technique for SC-PDMA-based Cooperative Relays  

Woo, Kyung-Soo (중앙대학교 디지털통신 연구실)
Kim, Yeong-Jun (중앙대학교 디지털통신 연구실)
Yoo, Hyun-Il (중앙대학교 디지털통신 연구실)
Kim, Jae-Kwon (연세대학교 컴퓨터정보통신공학부)
Yun, Sang-Boh (삼성전자 통신연구소)
Cho, Yong-Soo (중앙대학교 디지털통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.4A, 2009 , pp. 302-308 More about this Journal
Abstract
In this paper, two receive diversity combining techniques are proposed for single-carrier Sequency division multiple access (SC-FDMA)-based cooperative relay systems when DFT spreading sizes for mobile station (MS) and relay station (RS) are different. A simplified-MRC (5-MRC) technique performs diversity combining in the time domain using the estimated channel weight and initial values obtained by SC-FDMA signal detection. An interference rejection-MRC (IR-MRC) technique performs diversity combining in the frequency domain by adjusting DFT spreading size in the receiver. It is shown by computer simulation that the proposed receive diversity combining techniques achieve a significant performance gain over the conventional MRC technique with zero forcing (ZF) detector.
Keywords
SC-FDMA; MMR; Cooperative Diversity; 5-MRC; IR-MRC;
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