【摘要】 分层空时接收机的空时复用MIMO可以获得容量的线性增长,但是分层空时处理过程需要接收天线的数量必须至少等于或大于发送天线的数量,对于体积很小的移动手机来说设计多根天线是很困难的,从而阻碍了其广泛的发展。提出了空间复用系统中虚拟接收天线的新概念。每个子数据流都进行一定的时间偏移再传输,同时对接收端输出信号过采样,虚拟接收天线就产生了,物理接收天线的数量相应得到减少。更多还原

【Abstract】 Layered space-time receiver in Spatial multiplexing MIMO can achieve the linearly increasing capacity.However,layered space-time processing requires the number of receive antennas to be the same or larger than the number of transmit antennas.It is difficult to design a small sized mobile unit with such number of antennas,and hinders the broad dissemination of this promising technology.This paper present the novel concept of virtual receive antennas for spatial multiplexing system.Each substream is transmitted with a specific timing offset,and the receive matched filter output signal is oversampled.Then,virtual receive antennas are created and the number of physical receive antennas can be reduced.Simulation results are presented to demonstrate the system performance.更多还原