CDMA2000前向链路信道估计及跟踪算法的研究  

Exploration of the channel estimation and multi-path tracking algorithm in CDMA2000 downlink

作　　者：沈盟[1] 孙庆发[1] 蒋良成[1] 尤肖虎[1] 

机构地区：[1]东南大学移动通信国家重点实验室,南京210096

出　　处：《四川通信技术》2001年第6期16-20,共5页Sichuan Communications Technology

摘　　要：对CDMA2 0 0 0移动台接收机的信道估计单元的算法和实现进行了分析 ,探讨了如何根据衰落速率对相关长度进行自适应的调整 ,研究了如何在暂态情况下跟踪信道的多径分布的变化。为了实现上述算法简要描述了一种在非理想AFC情况下的多普勒频移测量方法。Both the algorithm and implementation of channel estimation in CDMA2000 mobile station is explored in this article,firstly an adaptive adjust algorithm of channel estimation length is given,then a multi path tracking algorithm is also given in order to track the change of multi path profile in the transient of channel state.At last,a general description of the measurement of the channel fading rate under non ideal AFC is also given in order to implement the algorithms mentioned above.These algorithms make it possible for the channel estimation module to perform an accurate estimation of the multi path coefficient based on the fast and precise tracking of multi path profile of the channel.

关 键 词：CDMA2000 前向链路 信道估计 码分多址 跟踪算法 

分 类 号：TN929.533[电子电信—通信与信息系统]