MIMO-PNC中继系统的信道容量研究

摘要

为了推导计算MIMO-PNC中继系统信道容量, 对几种中继方案进行了简要介绍, 列出了各中继方案的信道容量, 并详细阐述了物理层网络编码技术 ( Physical-layer Network Coding, PNC) 放大转发中继的信道容量. 在PNC放大转发中继系统基础上, 引入多天线技术 ( Multiple-Input Multiple-Output, MIMO) 技术, 并推导出MIMO-PNC中继系统的信道容量. 对几种中继方案进行了仿真, MIMO-PNC双向中继系统具有明显优越性, 仿真结果表明, 天线个数越多MIMO-PNC中继系统的信道容量越大, 且在较低信噪比就超越了其他双向中继系统.%Based on the two-way relay system,this paper focuses on the channel capacity of MIMO-PNC system.Several relay schemes and their channel capacity are briefly introduced,but the throughput of the PNC amplify-forward relay system is described in detail.With MIMO technique,the MIMO-PNC relay system is built upon PNC relay scheme,and the channel capacity is obtained for MIMO-PNC relay system. The simulation is performed for several relay schemes. The MIMO-PNC relay system has an obvious superiority.The simulation results show that the more antennas MIMO-PNC relay system has,the larger channel capacity is achieved, and the MIMO-PNC relay system exceeds other relay schemes at lower SNR.