Inter-symbol-interference cancelation in time-domain physical-layer network coding with fractional delay
Inter-symbol-interference cancelation in time-domain physical-layer network coding with fractional delay
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DOI：
10.1109/pimrc.2014.7136166
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Yixin Li;F. Zheng;Yanxiang Jiang
中科院分区：
文献类型：
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作者：
Yixin Li;F. Zheng;Yanxiang Jiang
解码转发物理层网络编码（PLNC）是一种很有前途的高性能无线中继网络编码技术，但在异步情况下采用实际脉冲整形波形的研究报道很少。当信号以符号级分数延迟到达中继时，会产生符号间干扰（ISI）。提出了一种基于迭代的分数时延异步双向中继网络ISI消除方案。来自两个终端的信号被分别解码，用于ISI重建和消除。仿真结果表明，该方案即使只需要一次迭代，也能显著提高系统的误码率性能。
Decode-and-forward physical-layer network coding (PLNC) is one of the promising high-performance techniques for wireless relay networks, but little has been reported on the case of asynchronous scenarios using practical pulse shaping waveforms. When signals arrive at the relay with symbol level fractional delay, inter-symbol interference (ISI) will occur. This paper presents an iteration-based ISI cancelation scheme for practical asynchronous two-way relay network (TWRN) with fractional delay. Signals from both terminals are separately decoded for ISI reconstruction and elimination. Simulations show that the proposed scheme with even just one iteration can significantly improve the BER performance.