发送端自组织活动天线MIMO系统的随机分析

Random analysis of the MIMO system with self-organized passive antennas in transmitter end

为了精确估计无线多输入多输出系统(MIMO)的信道容量,提出了发送端活动天线是自组织广播模式的无线通信系统.在定义了一个等效同心圆区域(接收子空间)的基础上,应用复合随机过程数学模型来描述自组织广播式无线MIMO通信系统.同时把迫零方法(ZF)和信噪泄漏加噪声比标准方法相互结合起来,得到了最优波束形成矢量和信噪比的修正值,从而得到发送端自组织无线MIMO系统信道容量的精确描述.仿真结果证明,这样的结论是合理的.

In order to precisely estimate the channel capacity of a wireless MIMO communication system,a wireless MIMO communication system is presented whose passive antennas in transmitter end are self-organized broadcasting mode.Based on defining an equivalent concentric circle area (received subspace),the self-organized broadcasting wireless MIMO communication system is described by means of the mathematical model of compound stochastic process.Meanwhile,the optimum beam-forming vector and the modified value of signal to noise ratio are deduced by combining ZF (zero-forcing) detection with signal to leakage-plus-noise ratio method.Thus the precise description of the self-organized broadcasting wireless MIMO communication system is obtained.Simulation result shows that the description is reasonable.