摘要
对IEEE802.11n室内、室外信道(TGn)模型进行介绍,对产生小尺度衰落样值的滤波器算法原理及实现方法进行讨论,并对TGn信道的多普勒效应进行研究及建模仿真。利用Matlab软件编程产生具有TGn信道多普勒功率谱的IIR滤波器,并通过该滤波器产生信道小尺度衰落样值。仿真产生的两个滤波器的幅频特性和信道样值的多普勒功率谱与参考值基本一致。该建模仿真方法能够比较准确的模拟出TGn信道的多普勒效应并且具有复杂度低和易于实现的特点。
Firstly, the indoor and outdoor channel model of IEEE802.11 n is described, then, the principle and implementation of filter algorithm, which produces small-scale fading samples, also discussed. Mean- while, the doppler effect of TGn channel is studied, modeled and simulated. The IIR filters with Doppler power spectrum of TGn channel are produced with Matlab, then these filters are used to produce small- scale fading samples of the channel. The amplitude-frequency characteristic of the two filters and the doppler power spectrum of the channel samples in simulation are close to the reference value. The simula- tion and modeling could precisely simulate the doppler effect of IEEE802.11 n, and possesses the proper- ties of low complexity and easy implementation.
出处
《通信技术》
2016年第1期39-42,共4页
Communications Technology
