计算机与现代化

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基于AF中继的物理层网络编码信道容量分析

  

  1. (西北农林科技大学信息工程学院,陕西咸阳712100)
  • 收稿日期:2016-07-19 出版日期:2017-03-09 发布日期:2017-03-20
  • 作者简介:陈郡(1980-),女,河北石家庄人,西北农林科技大学信息工程学院讲师,学士,研究方向:信号处理与网络编码; 通信作者:方勇(1979-),男,江西崇仁人,教授,博士生导师,研究方向:分布式信源编码,视频压缩与传输,联合信源信道编码,无线传感器网络,压缩感知。

Channel Capacity Analysis of Physical Layer Network Coding Based on AF Relay

  1. (College of Information Engineering, Northwest A&F University, Xianyang 712100, China)
  • Received:2016-07-19 Online:2017-03-09 Published:2017-03-20

摘要:

将物理层网络编码(Physical layer Network Coding, PNC)技术和无线协作中继技术相结合,研究不同中继传输方案下三节点双向中继系统的信道容量,并通过仿真对理论分析结果进行验证。仿真结果表明,采用物理层网络编码技术可以在很大程度上提高双向中继系统的信道容量。同时,采用物理层网络编码的双向中继系统的信道容量还会受到系统信噪比和中继位置的影响。

关键词: 物理层网络编码; 双向中继系统; AF中继; 信道容量, 信噪比

Abstract:

Combined the Physical layer Network Coding with the wireless cooperative relay technology, this paper investigates the channel capacity of three-node two-way relay system, and verifies the theoretical results by mean of simulation. The simulation results proves that the channel capacity can be largely improved by the application of Physical layer Network Coding. Meanwhile, the channel capacity of two-way relay system which adopts the technique of Physical layer Network Coding will be influenced by the SNR of the system and the position of the relay.

Key words: physical layer network coding, two-way relay system, AF relay, channel capacity, SNR

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