具有天线选择与中继选择的空间调制技术

针对空间调制(SM)技术存在的缺欠,提出了具有天线选择和中继选择的空间调制系统方案。首先在多输入多输出(MIMO)信道模型下,通过对发送端天线选择,将拥有最佳信道状态的天线选出进行SM,打破SM技术对发送端天线数的限制,并提升采用高阶调制的SM分集性能。然后进一步将此思想引入协作通信网络,结合传感器网络的分级观念,提出采用中继选择和空间调制的中继传输协议,并通过仿真观察系统分集性能的改善。仿真结果表明,上述中继传输协议不仅能提升系统性能,而且使系统配置更加灵活。

Spatial modulation technique with antenna and relay selections

To overcome the inherence disadvantage of spatial modulation(SM) technique,two SM schemes with antenna and relay selections are investigated.Firstly,under the channel model of multiple-input multiple-output(MIMO),through the antenna selection at the transmitter,the selected antenna with the best channel state can be used in SM.This SM scheme breaks the limitation on the number of transmit antennas,and obtains improvement of diversity performance for a system employing high order of modulation.Then the idea is further introduced in cooperative communication networks.Integrating the classification idea of sensor networks,a relay transmission scheme which employs SM and relay selection is presented,and the improvement of diversity performance is observed by simulation.Simulation results confirm that the system performance is improved and the system configuration is more flexible with the transmission scheme.