多天线双向中继信道中的点阵网络编码

Mengyu Huang, Jinhong Yuan
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引用次数: 1

摘要

本文研究了多天线双向中继信道(TWRC)中,每个用户有一个天线,中继有多个天线的晶格网络编码(LNC)。提出了两种基于嵌套格码的matwrc中继计算方案,即接收天线选择(RAS)方案和接收天线组合(RAC)方案。在RAS方案中,中继计算不同信道条件下所有中继天线的计算率,然后选择计算率最高的单个天线来恢复已发送消息的线性组合。在RAC方案中,来自所有中继天线的信号与一个比例因子向量组合,从中恢复传输消息的线性组合。推导了两种方案的可实现率,并分析了两种方案的误差性能。仿真结果表明,RAC方案明显优于RAS方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lattice network coding in multiple-antenna two-way relay channels
In this paper, lattice network coding (LNC) is studied in the multiple-antenna (MA) two-way relay channel (TWRC), where each user has a single antenna and the relay has multiple antennas. We propose two relay computation schemes for the MA TWRC with nested lattice codes, namely the receive antenna selection (RAS) scheme and the receive antenna combining (RAC) scheme. In the RAS scheme, the relay calculates the computation rates of all the relay antennas with different channel conditions and then selects a single antenna with the highest computation rate to recover a linear combination of transmitted messages. In the RAC scheme, the signals from all the relay antennas are combined with a scaling factor vector, from which a linear combination of the transmitted messages is recovered. We derive the achievable rate and analyze the error performance of the two scheme. The simulation result shows that the RAC scheme outperforms the RAS scheme significantly.
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