Two Relay-Stage Selection Cooperation in Wireless Networks and Why More than Two Is Not Necessary
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概要
- 論文の詳細を見る
The selection cooperation is a basic and attractive scheme of cooperative diversity in the multiple relays scenario. Most previous schemes of selection cooperation consist only one relay-stage in which one relay is selected to retransmit, and the signal from the selected relay is not utilized by other relays. In this paper, we introduce a two relay-stage selection cooperation scheme. The performance can be improved by letting all other relays to utilize the signal from the first selected relay to make another selection and retransmission in the second relay-stage. We derive the closed-form expression of the outage probability of the proposed scheme in the high SNR regime. Both theoretical and numerical results suggest that the proposed scheme can reduce the outage probability compared with the traditional scheme with only one relay-stage. Furthermore, we demonstrate that more than two relay-stage can not further reduce the outage probability. We also study the dependence of the proposed scheme on stage lengths and topology, and analyze the increased overhead.
- (社)電子情報通信学会の論文
- 2010-12-01
著者
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REN Yong
Department of Electronic Engineering, Tsinghua University
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Ren Yong
Electronic Engineering Department Tsinghua University
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Ren Yong
Department Of Electronic Engineering Tsinghua University
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Ren Yong
Electronics Engineering Department Of Tsinghua University
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Zhang L
Department Of Electronic Engineering Tsinghua University
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Shan Xiuming
Department Of Electronic Engineering Tsinghua University
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Shan X
Tsinghua Univ. Beijing Chn
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Shan Xiuming
Electronic Engineering Department Tsinghua University
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Zhang Lin
Department Of Biochemistry And Molecular Biology Nihon University School Of Dentistry At Matsudo
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CHEN Xingyang
Department of Electronic Engineering of Tsinghua University
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DONG Yuhan
Department of Electronic Engineering of Tsinghua University
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Shan Xiuming
Department Of Electronic Engineering Of Tsinghua University
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Ren Yong
Department Of Electronic Engineering Of Tsinghua University
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