| 一种WCDMA下行自适应信道估计算法及其性能分析 |
| |
| 引用本文： | 周贤超,朱近康,邱玲.一种WCDMA下行自适应信道估计算法及其性能分析[J].中国科学技术大学学报,2003,33(1):39-44. |
| |
| 作者姓名： | 周贤超 朱近康 邱玲 |
| |
| 作者单位： | 中国科学技术大学个人通信与扩频实验室,安徽,合肥,230027 |
| |
| 基金项目： | 国家“8 63计划”(863 3 17 0 3 0 1 0 1 0 4 2 0 )，“973”(G19980 3 0 40 8)项目资助 |
| |
| 摘 要： | 针对第三代移动通信系统WCDMA的标准中的下行连续公共导频信道，提出了自适应加权的多符号平均的信道估计算法，它包括信道变化速率的检测和信道估计器权重自适应调整两个部分。仿真结果表明，自适应信道估计算法在误比特率性能上优于纯粹的多符号平均或者不取平均的信道估计方法，且该算法复杂度小，易于在硬件上实现。
|
| 关 键 词： | 信道估计 RAKE接收 WCDMA AWMSA |
| 文章编号： | 0253-2778(2003)01-0039-06 |
An Adaptive Channel Estimation Algorithm for WCDMA Downlink Channel and Performance Analysis |
| |
| ZHOU Xian-chao,ZHU Jin-kang,QIU Ling.An Adaptive Channel Estimation Algorithm for WCDMA Downlink Channel and Performance Analysis[J].Journal of University of Science and Technology of China,2003,33(1):39-44. |
| |
| Authors: | ZHOU Xian-chao ZHU Jin-kang QIU Ling |
| |
| Abstract: | A novel adaptive weighted multi-symbol averaging ( AWMSA) channel estimation algorithm with PCPICH is presented for WCDMA downlink channel using coherent RAKE combining. It consists of two parts: a channel fadin g-rate detector and a selector for choosing the most suitable accumulation weig ht. The performance achievable with coherent RAKE combining using the proposed A WMSA channel estimation algorithm is evaluated by computer simulations in a freq uency selective multipath Rayleigh fading channel and the simulation results ind icate that AWMSA channel estimation algorithm works better than whole averaging or non-averaging algorithm. |
| |
| Keywords: | channel estimation RAKE receiver WCDMA AWMSA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
