›› 2010, Vol. 23 ›› Issue (10): 65-68.

• 论文 • 上一篇    下一篇

无线瑞利衰落信道的自回归模型研究

王选朝,张静,李莉,黄涛   

  1. (上海师范大学 信息与机电工程学院,上海 200234)
  • 出版日期:2010-10-15 发布日期:2010-12-31
  • 作者简介:王选朝(1981-),男,硕士研究生。研究方向:信道与预编码技术。

AR Modeling of the Rayleigh Fading Channel

 WANG Xuan-Chao, ZHANG Jing, LI Yi, HUANG Tao   

  1. (School of Information and Mechanical Electronic Engineering,Shanghai Normal University,Shanghai 200234,China)
  • Online:2010-10-15 Published:2010-12-31

摘要:

在不同多普勒谱下分析自回归(AR)模型参数与系统极点位置、幅度响应关系,采用极点位置累试法对模型参数进行修正,改善了仿真功率谱,在通带衰落方面不满足理论要求的缺陷,提高了模型对瑞利衰落信道功率谱的仿真精度。仿真结果表明,通过累试法调整系统极点分布,可以提高仿真结果与理论值的匹配度,方法简单且精度较高,降低了仿真分析的难度。

关键词: AR模型, 累试法, 参数修正, 瑞利衰落信道功率谱, 系统极点分布

Abstract:

The relationship between the autoregressive (AR) model parameters and the system pole position,amplitude response under different Doppler spectra is analyzed.Then the parameters of autoregressive (AR) model are modified by many times trials to improve the power spectrum defect that the pass band attenuation does not meet the theoretical requirements.The simulation accuracy of Rayleigh fading channel is also improved.Simulation results show that the matching degree between the simulation results with the theoretical value is improved by adjusting the system poles distribution.The method is simple and can improve the simulation accuracy and reduce the difficulty of the simulation analysis to a certain extent.

Key words: Auto Regressive(AR) model;many times trials;parameters adjustment;rayleigh fading channel power spectrum;system poles distribution

中图分类号: 

  • TN929.5