说明：  研究快时变OFDM信道估计的WSSUS模型的时变脉冲响应MATLAB仿真图，也是实现《Wireless Communications OverRapidly Time-Varying Channels (2011)>>中的脉冲响应仿真图源程序
(Research of fast time-varying OFDM channel estimation WSSUS model the time-varying impulse response of the MATLAB simulation diagram, and realize the Wireless Communications OverRapidly Time- Varying Channels (2011) > > in the impulse response simulation graph source program)