MIMO信道中衰落信号的空域相关性评估

将MIMO(多输入多输出)信道建立为Nakagami衰落信道,进一步推导单元天线接收多径衰落信号的空域相关系数的通用解析式,并在均匀分布、余弦分布、高斯分布和拉式分布的来波功率角谱下分别进一步评估接收信号的空域相关性,分析各参数对相关系数的影响,比较各种来波功率角谱下相关性的数值结果,这些对于准确分析MIMO系统性能与设计MIMO多天线系统是十分必要的.

Capacity Analysis and Simulation for Two Typical MIMO Systems

In order to form a solid information theory and application foundation for the hot-research MIMO system,which is the most suitable candidate for future high-data-rate wireless communication systems,MIMO channel's capacity formula was studied.With a circularly symmetric complex Gaussian input signal vector and equally-distributed signal power through all the transmit antennas,a much higher capacity can be achieved compared to the traditional SISO system.Furthermore,two typical MIMO systems of the channel matrix with all 1's elements channel matrix and the unit channel matrix were analyzed thoroughly for their capacity,followed by our proposed virtual equivalent structures.Finally simulation results were presented to verify the significant MIMO capacity.