中文摘要：

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.

英文摘要：

To overcome the inherence disadvantage of spatial modulation（SM） technique,two SM schemeswith antenna and relay selections are investigated. Firstly,under the channel model of multiple-input multi-ple-output（MIMO）,through the antenna selection at the transmitter,the selected antenna with the bestchannel state can be used in SM. This SM scheme breaks the limitation on the number of transmit anten-nas,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 i-dea of sensor networks,a relay transmission scheme which employs SM and relay selection is presented,andthe improvement of diversity performance is observed by simulation. Simulation results confirm that the sys-tem performance is improved and the system configuration is more flexible with the transmission scheme.