The paper analyzes the uplink cell channel capacity of DMIMO system.A model of circular area channel is established, in which fast fading,shadow fading and path loss are considered.Based on this model,and by using the classical deduction formula of MIMO channel capacity,the theoretical expression of DMIMO channel capacity is deducted under high SNR condition. Theexperiment results show that the theoretical expression reflects the actual performance of the system very well.%主要对近似蜂窝结构的圆型小区分布式MIMO系统上行信道容量展开分析。无线传输信道考虑了包含快衰落、阴影衰落和路径损耗的复合衰落信道模型，分布式天线端口采用覆盖式传输策略，并依据所建信道模型，通过采用经典的MIMO信道容量推导公式，在高信噪比条件下推导出分布式MIMO系统的信道容量理论表达式。实验结果表明，分布式MIMO在不同系统参数条件下采用Monte－Carlo仿真方法与系统理论表达式曲线吻合，且推导的理论表达式可很好地反应系统的实际性能。
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