Error Probability of Opportunistic Decode-and-Forward Relaying in Nakagami-m Fading Channels with Arbitrary m
Error Probability of Opportunistic Decode-and-Forward Relaying in Nakagami-m Fading Channels with Arbitrary m
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DOI：
10.1109/wcl.2012.120312.120736
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发表时间：
2013-02
影响因子：
6.3
通讯作者：
Q. Shi;Y. Karasawa
中科院分区：
文献类型：
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作者：
Q. Shi;Y. Karasawa
我们研究了任意 m≥ 0.5 的 Nakagami-m 衰落中机会解码转发 (DF) 中继的错误性能。特别是，我们根据 Lauricella 超几何函数 (LHF) 获得了精确的矩生成函数 (MGF) 表达式，用于具有最大比组合 (MRC) 或选择组合 (SC) 的机会 DF 中继。在 SC 的情况下，还导出了接收 SNR 的累积密度函数 (CDF)，并且基于 CDF，提供了用于 SC 机会性 DF 中继的两个错误概率表达式。此外，我们还表明，当平均 SNR 变大时，MGF 表达式可以大大简化。通过渐进分析，确定了机会性 DF 中继的多样性阶。
We investigate the error performance of opportunistic decode-and-forward (DF) relaying in Nakagami-m fading with arbitrary m≥ 0.5. In particular, we obtain exact moment generating function (MGF) expressions in terms of Lauricella hypergeometric function (LHF) for opportunistic DF relaying with maximal ratio combining (MRC) or selection combining (SC). In the case of SC, the cumulative density function (CDF) of the receive SNR is also derived and based on the CDF, two error probability expressions for opportunistic DF relaying with SC are provided. Further, we show that the MGF expressions can be greatly simplified when average SNRs become large. From asymptotic analysis, the diversity order of opportunistic DF relaying is identified.