CDMA系统下行信道的分数阶间隔信道估计和均衡

Fractionally Spaced Channel Estimation and Equalization for Synchronous DS-CDMA Downlink with Aperiodic Spreading Code

提出一种应用于非周期扩频的CDMA系统下行信道的分数阶间隔信道估计算法,以及在信道估计结果基础上得到的均衡算法.这些算法克服了以往的Chip速率采样的信道估计和均衡算法固有的缺陷,得到了完备的信道参数的估计,改善了均衡的效果.计算机仿真验证了算法的性能.

Fractionally spaced channel estimation and equalization algorithms are proposed for a synchronous CDMA (code division multiple access) system that uses aperiodic spreading code. The proposed algorithms overcome the defects of the conventional algorithms used for signal sampled with chip rate and obtain the complete channel response, therefore improve the performance of the equalization. Simulations demonstrate the performance of the proposed algorithms.