短波信道中DDE算法实现和性能分析
首发时间:2012-07-12
摘要:近年来,短波通信已经在商业通信和军事通信中得到广泛应用。随着相应技术的发展,对短波通信可靠性、传输数据速率要求越来越高。短波信道的干扰源主要来源于多径和衰弱,如何解决这两类干扰成为短波通信系统一项关键技术。本篇论文主要研究DDE算法,DDE算法由信道估计和解托普利兹方程两部分组成。信道估计采用最陡下降法算法(Steep-Descent Agorithm)求解,然后使用Levinson 递归算法求解托普利兹方程从而求得传输信号。
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Data Directed Estimation Algorithm Implemention and Performence Analysis in HF Channel
Abstract:In recent years, HF communication system has been widely used in commercial communications and military communications. Along with the development of the current technology, The requirements of HF communication reliability, high data rate are increasing. Signal interference source is mainly multipath and decline. How to solve these two types of interference becomes a key technology in shortwave communication system. In this thesis, the main research is Data Directed Estimation algorithm, which is made up of channel estimation and the solusion of Toeplit equation. The estimation of Channel parametersIt uses the steepest descent algorithm, then using Levinson recursion algorithm calculate the Toeplit equation in order to estimate the unknown signal.
Keywords: communication and information systems channel equalization data directed estimation
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