一种新的快衰落信道频域跟踪算法

宋梁; 胡波; 凌燮亭

一种新的快衰落信道频域跟踪算法

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出版历程
- 收稿日期: 2001-03-30
- 修回日期: 2001-10-11
- 刊出日期: 2002-11-19

Frequency domain analysis in fast fading channel estimation

摘要

摘要: 该文研究了第三代移动通信系统中用户移动速度在150km/h以上时,无线信道的快衰落特性,并且在3GPP系统的协议框架下提出了一种新的基于频域的信道跟踪方法(FBP),利用快衰落信道频域上的相对稳定性,解决了由于信道参数变化的速度超过自适应算法收敛速度,而造成的在时域上无法进行信道跟踪的问题,文章给出了该算法的模拟结果,并与另一种对衰落信道的参数进行基于小波的信道跟踪算法(WBP)进行了比较,该文提出的算法具有更好的性能和更低的算法复杂度。
- 快衰落信道; 信道跟踪; 频域处理; 小波域处理
Abstract: This paper investigates the fast fading channel with the mobile speed over 150km/h, which is used in 3G wireless communication system. Because the varying speed of channel coefficients exceeds the convergence speed of tracking algorithm, the normal time-domain based method fail. However, when transformed to frequency domain, the varying speed of channel coefficients becomes slow. Based on this observation, a novel approach to channel estimation is proposed in frequency domain. Compared with other algorithms, this method shows a good performance both in computation and tracing speed.

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参考文献(1)

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