TD-SCDMA系统中引入阈值信噪比的信道估计  

Add Threshold SNR to Channel Estimate in TD-SCDMA System

作　　者：李鹏[1] 张敏军[1] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,东营257061

出　　处：《世界科技研究与发展》2007年第4期33-36,共4页World Sci-Tech R&D

基　　金：国家自然科学基金项目(60572020);北京邮电大学泛网无线通信教育部重点实验室资助项目(2007102)

摘　　要：采用联合检测和智能天线等技术是TD-SCDMA移动通信系统的优势之一,但这些技术的实现必须以准确的信道估计为前提。本文探讨了适合于TD-SCDMA系统的信道估计算法,分析了一种加入阈值信噪比的信道估计算法原理。通过上行链路的模拟仿真表明,该信道估计算法的信道响应更接近理想值,有利于提高系统性能。The technological advantage of the TD-SCDMA system is primarily embodied in the application of new technologies such as smart antenna and joint detection,but the realization of these technologies must on the basis of an accurate estimation of channel identity. In this paper,we investigated the channel estimate algorithm which is applicable to TD-SCDMA, an threshold processing method algorithm is analyzed. Simulation results show that its channel impulse responses are closer to the ideal ones, it is advantageous to improve the system performance.

关 键 词：时分双工同步码分多址 码片 信道估计 阈值 训练序列 

分 类 号：TN929.533[电子电信—通信与信息系统]