无线移动信道的离散时间模型及其应用

Implementation of A Discrete-Time Model for the Wireless Mobile Channel

基于慢衰落无线移动信道的统计特性,针对数字通信系统的计算机仿真要求,利用蒙特卡罗方法得到了一种无线移动信道的离散时间模型,并运用此信道模型构造了GD OFDM系统仿真模型,研究了OFDM系统的性能.仿真结果表明,该信道模型有效地描述了无线移动信道的多普勒扩展和时延扩展的特点,在无线移动通信系统的软件仿真中具有实用性.

For the simulation of digital communication system, the paper represents a discrete-time model for the slow-fading wireless mobile channel according to its characteristic. A GD-OFDM simulation based on the model is provided, and the analysis on the performance of OFDM system is also included. The results indicate that the channel model reflects the feature of wireless mobile channel and is a practical method in the simulation of wireless mobile communication.