【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。以上探讨使得信道估计单元能够在准确快速选出有效径的基础上对多径系数进行精确估计更多还原

【Abstract】 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.更多还原