CDMA2000 1xEV-DO前向链路信道估计技术  

Channel Estimation Techniques in the Forward Link of CDMA2000 1xEV-DO

作　　者：刘洋[1] 王家恒[1] 蒋琦[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《淮海工学院学报（自然科学版）》2005年第3期22-26,共5页Journal of Huaihai Institute of Technology:Natural Sciences Edition

摘　　要：1xEV-DO是CDMA2000针对数据业务的增强系统。由于该系统采用了高阶调制技术,对信道估计准确度有更高的要求,通过传统的信道估计算法无法达到系统测试标准。将多时隙加权平均算法(WMSA)引入EV-DO系统,并提出了利用MAC信道信息辅助导频信道进行信道估计的方法。仿真结果表明,该方法有效地提高了信道估计精度,改善了系统的性能。1xEv-DO is the data-enhanced technology, the system needs an accurate estimation algorithms can not achieve the system of CDMA2000. Using multilevel modulation channel estimation algorithm, and conventional channel recommended minimum performance standards. In this paper, we introduced the WMSA into EV-DO, and put forward the estimation algorithm of using MAC channel into assistant pilot channels. Simulation results proved that our estimation algorithm could remarkably improve the accuracy of channel estimation and the system performance.

关 键 词：1XEV-DO 信道估计 时隙导频 MAC 

分 类 号：TN929.533[电子电信—通信与信息系统]