多天线中继协助的终端直连通信传输方案设计

为了提高蜂窝通信系统的传输效率,一种多天线中继协助的D2D通信链路(MIMO relay aided-D2D,MRA-D2D)的方案被提出。该项研究通过分析中继天线数目、干扰源、接收端之间的距离和功率等信息,设计了MIMO多天线中继协助D2D传输方案的能量效率与通信链路性能的关联表达式。研究结果表明:采用多天线中继辅助,不仅可以通过提高天线数目来提高MRA-D2D链路的接收信干噪比,还可有效提高系统的能量效率;并证明了单纯的提高发射功率并不能提高系统的能量效率。

Design of MRA-D2D Communication Transmission System

In order to improving the wireless transmission efficiency, a model of MIMO (Multiple Input Multiple Output) Relay Aided-D2D (Device to Device) communication system was proposed. In the proposal, the equations related to the energy efficiency of the MRA-D2D communication system were analyzed according to differences on the numbers of antennas, distances between the devices and transmit powers. The research results demonstrate that the SINR(Signal to Interference and Noise Ratio) and energy efficiency of the MRA-D2D communication system could be improve by increasing the number of antennas on the relay, but the energy efficiency could not be improved by only increasing the transmit power of the devices.