Physical-layer network coding with multi-antenna transceivers in interference limited environments
Physical-layer network coding with multi-antenna transceivers in interference limited environments
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DOI：
10.1049/iet-com.2015.0299
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Hoc Phan;F. Zheng;T. Chu
中科院分区：
文献类型：
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作者：
Hoc Phan;F. Zheng;T. Chu
在本研究中，作者首先分析了采用物理层网络编码的波束成形放大转发双向中继网络在多个周围终端同信道干扰影响下的系统性能，然后提出了相关的功率分配策略。系统的中断概率、符号错误率 (SER) 和总遍历信道容量方面的双向通信性能得到量化。还提供足够高信噪比的渐近性能分析，以获得对系统设计的进一步有价值的见解。基于分析，开发了在总功率约束下最小化渐近中断概率和SER以及最大化遍历信道容量的功率分配策略。数值结果表明，在总功率预算和其他系统参数相同的情况下，所提出的功率分配方法优于等功率分配。
In this study, the authors first analyse system performance of beamforming amplify-and-forward two-way relay networks with physical-layer network coding under the impact of co-channel interference from multiple surrounding terminals and then propose the associated power allocation strategies. The performance of the two-way communications in terms of outage probability, symbol error rate (SER), and total ergodic channel capacity of the system is quantified. Asymptotic performance analysis for sufficiently high signal-to-noise ratio is also provided to obtain further valuable insights into system designs. Based on the analysis, power allocation strategies to minimise the asymptotic outage probability and SER as well as to maximise the ergodic channel capacity under the total power constraint are developed. The numerical results show that the proposed power allocation approaches outperform equal power allocation given the same total power budget and other system parameters.