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基于中继选择的认知系统性能

DOI: 10.13190/jbupt.201103.44.tangjm, PP. 44-47

Keywords: 认知无线电,中继选择,功率受限,中断概率,合作分集

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Abstract:

为了提高认知系统的性能,提出一种混合中继选择协议(HPRS).通过判断中继是否能正确解码源信号来决定中继采用何种协议转发数据,最终选取其中信噪比最大的中继作为最优中继,并推导了HPRS在高信噪比下中断概率的近似表达式及分集度.理论和仿真结果表明,放大转发中继选择(SAF)、解码转发中继选择(SDF)协议和HPRS均可获得空间满分集度,而HPRS的中断性能要优于SAF和SDF协议.

References

[1]  Laneman J N, Tse D N C, Wornell G W. Cooperative diversity in wireless networks: efficient protocols and outage behavior[J]. IEEE Trans on Inform Theory, 2004, 50(12): 3062-3080.
[2]  Laneman J N, Wornell G W. Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks [J]. IEEE Trans on Inform Theory, 2003, 49(10): 2414-2425.
[3]  Zhao Yi, Adve R, Lim T J. Improving amplify-and-forward relay networks: optimal power allocation versus selection [J]. IEEE Trans on Wireless Commun, 2007, 6(8): 3114-3123.
[4]  Su Weifeng, Liu Xin. On optimum selection relaying protocols in cooperative wireless networks[J]. IEEE Trans on Commun, 2010, 58(1): 52-57.
[5]  Sun Chunhua, Ben Letaief K. User cooperation in heterogeneous cognitive radio networks with interference reduction//ICC 2008. Beijing: , 2008: 3193-3197.
[6]  Lee K, Yener A. Outage performance of cognitive wireless relay networks//GLOBECOM’06. San Francisco: , 2006: 1-5.
[7]  Guo Y, Kang G. Outage performance of relay-assisted cognitive-radio system under spectrum-sharing constraints [J]. Electronics Letters, 2010, 46(2): 182-184.

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