Limited feedback designs for two-way wireless relaying channels with physical network coding
Limited feedback designs for two-way wireless relaying channels with physical network coding
复制标题
具有物理网络编码的双向无线中继信道的有限反馈设计
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Inkyu Lee
中科院分区：
文献类型：
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作者：
Young;Youngil Jeon;Kwangwon Lee;Inkyu Lee
在本文中，我们提出了一个有限的反馈系统的双向无线中继信道与物理网络编码（PNC）。当PNC采用模运算时，已经研究了具有全反馈的最优系统。在这种情况下，调整两个端节点的信道的相位和功率以最大化最小距离。基于这种全反馈系统，我们设计了新的相位和功率量化方法。从最小距离的观察，我们提出了一个码书的设计。特别是针对16-QAM系统中的功率量化问题，提出了一种新的功率量化方案，使最差最小距离最大化。最后，仿真结果证实，我们提出的方案优于传统的有限系统，降低了复杂度。
In this paper, we propose a limited feedback system for two-way wireless relaying channels with physical network coding (PNC). The optimal system with full feedback has already been studied when a modulo operation is employed for the PNC. In this case, phase and power of channels of two end nodes are adjusted to maximize the minimum distance. Based on this full feedback system, we design new quantization methods for the phase and the power. From the observation of the minimum distance, we present a codebook design. Especially, for the quantization of power in the system with 16-QAM, a novel power quantization scheme is proposed to maximize the worst minimum distance. Finally, the simulation results confirm that our proposed scheme outperforms conventional limited systems with reduced complexity.