Outage probability analysis of partial AF relay selection in spectrum-sharing scenario with multiple primary users

Outage probability analysis of partial AF relay selection in spectrum-sharing scenario with multiple primary users
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多主用户频谱共享场景下部分AF中继选择的中断概率分析

DOI:
10.1049/el.2012.2217
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发表时间:
2012-09
影响因子:
1.1
通讯作者:
Gao, R.
Gao, R.
中科院分区:
工程技术4区
文献类型:
--
作者:
Chen, J.;Li, Z.;Si, J.;Huang, H.;Gao, R.

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研究了频谱共享中继网络中存在多个主用户时部分放大转发(AF)中继选择的精确中断概率。为了获得更多的洞察力,一个简单而准确的中断概率近似也来自高信噪比(SNR)区域。结果表明,在高信噪比下,中断概率只受中继-目的链路与中继-PU链路之间的信道增益比的影响,而与中继数目无关。此外,当存在更多的PU时,其导致次系统上的中断性能降级。最后给出了仿真结果,验证了分析的正确性.
In the presence of multiple primary users (PUs), the exact outage probability of partial amplify-and-forward (AF) relay selection in the spectrum-sharing relay networks is investigated. To gain more insight, a simple and accurate outage probability approximation is also derived in the high signal-to-noise ratio (SNR) region. It is shown that, at high SNR, the outage probability is affected only by the channel gain ratio between relay-destination links to relay-PU links, regardless of the number of relays. Moreover, when more PUs are present, it causes outage performance degradation on the secondary system. Finally, simulation results are presented to verify the analysis.
DOI: 10.1109/lcomm.2011.051011.110426
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