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http://dx.doi.org/10.7236/JIWIT.2011.11.3.053

Optimal Relay Position of Hybrid ARQ Incremental Cooperative Relaying Scheme with Limited Feedback  

Kim, Lyum (울산대학교 전기전자정보시스템공학과)
Kong, Hyung-Yun (울산대학교 전기전자정보시스템공학과)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.11, no.3, 2011 , pp. 53-58 More about this Journal
Abstract
Recently, MIMO technology, which can improve data rate, link reliability and diversity order, has been widely studied. However, due to the limitation of size, cost and complexity, it is difficult to equip multiple antennas in mobile devices. To overcome this problem, the cooperative communication scheme has been proposed. In this scheme, each terminal shares its single antenna to form a virtual MIMO environment. However, in conventional cooperative scheme, e.g, decode-and-forward, amplify and forward, the spectral efficiency is decreased if there are many terminals taking part in the cooperation. Therefore, the incremental relaying scheme has been proposed to solve this problem. In this paper, we consider various models using incremental relaying technique. In addition, the position of relay is investigated in order to obtain optimal performance.
Keywords
MIMO; Cooperative Communication; Incremental Relaying; ARQ; Decode-and-Forward;
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