Full-Duplex Two-Way and One-Way Relaying: Average Rate, Outage Probability, and Tradeoffs
Full-Duplex Two-Way and One-Way Relaying: Average Rate, Outage Probability, and Tradeoffs
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全双工双向和单向中继：平均速率、中断概率和权衡
DOI：
10.1109/twc.2016.2531050
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发表时间：
2016
影响因子：
10.4
通讯作者：
Karagiannidis George K
中科院分区：
文献类型：
--
作者：
Zhang Zhengquan;Ma Zheng;Ding Zhiguo;Xiao Ming;Karagiannidis George K
本文系统地研究了残余自干扰下全双工双向和单向中继的平均速率和中断概率的权衡。在各种中继协议中，考虑了其中两种常见的中继协议：放大转发（AF）和解码转发（DF）。此外，我们考虑的应用物理层网络编码（PNC）和模拟网络编码（ANC）的全双工双向中继。新的封闭形式的平均速率和中断概率的表达式，提出。结果表明，全双工双向中继在中高信噪比区域可以获得比单向中继更高的速率，但代价是中断性能有一定的损失。此外，DF协议可以获得比AF协议更好的中断性能，但在高信噪比区域，它遭受一定的损失的速率。PNC可以进一步提高系统的速率和中断性能。此外，研究结果清楚地揭示了时分复用、前向协议和网络编码对中继系统的影响，这将为设计实用的全双工中继方案提供指导。
In this paper, we systematically study the average rate and outage probability tradeoffs of full-duplex two-way and one-way relaying under residual self-interference. Among various relaying protocols, two common of them are considered: amplify-and-forward (AF) and decode-and-forward (DF). Furthermore, we consider the application of physical-layer network coding (PNC) and analog network coding (ANC) to full-duplex two-way relaying. Novel closed-form expressions for the average rate and outage probability, are presented. The results show that full-duplex two-way relaying can achieve higher rate than one-way relaying in the medium to high signal-to-noise ratio (SNR) region, at the cost of a certain loss in the outage performance. Moreover, DF protocol can achieve better outage performance than the AF one, but it suffers from a certain loss in the rate in the high SNR region. It is also shown that PNC can further improve the rate and outage performance. In addition, the results clearly reveal the effects of time multiplexing, forward protocol, and network coding on relaying systems, which would shed light on designing practical full-duplex relaying schemes.