其他摘要：According to the wireless channel characteristics of the mobile communication, this paper took it into comprehensive analysis, using the MATLAB software to solve the channel parameters of the discrete linear system and filter parameters as the main feature for wireless channel. Then the multipath time delay spreading, angle spreading and Doppler spreading as the important charac-teristic indexes were extracted. Therefore, this article extracted the channel coefficients of the wireless channel, multipath time delay spreading (coherence bandwidth), Doppler spreading (coherent time) and angle spreading (coherence distance) from four dimensions of channel, time, frequency, and space of discrete linear time variable systems. These four indicators can depict the “fingerprint” feature of the wireless channel completely and show the actual physical significance.
