TD-SCDMA系统频偏估计的研究  

Study on Frequency Offset Estimation for TD-SCDMA

作　　者：孙文博[1] 景晓军[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876

出　　处：《通信技术》2010年第8期220-221,224,共3页Communications Technology

摘　　要：在TD-SCDMA无线通信系统中,对系统频偏进行快速和精确的估计是无线通信系统可以正常工作很重要的一个条件。没有准确的频偏估计作为前提,信道估计算法也不能对信道进行准确的估计,这样联合检测算法更发挥不了作用。充分考虑了TD-SCDMA无线通信系统中突发通信的特点以及帧格式,分析了利用导频信号和训练序列进行联合频偏估计算法的性能。仿真结果表明算法的复杂度不高,实用性强,频偏估计性能良好。In the TD-SCDMA wireless communication systems, the precise estimation of system frequency offset is a very important condition for ensuring proper work of the system. Without precise frequency offset estimation, the channel estimation would not be accurately, estimate the channel, thus the joint detection algorithm could not play its role. With considering the characteristics of burst communications, and frame format in TD-SCDMA system, this paper analyzes the performance of frequency offset estimation algorithm in implementing joint frequency offset estimation by using pilot signals and training sequences. Simulation results show that the algorithm is low in complexity, high in practicability, and of good performance in frequency offset estimation.

关 键 词：频偏估计 导频序列 训练序列 MATLAB仿真 

分 类 号：TN919.3[电子电信—通信与信息系统] TN911.22[电子电信—信息与通信工程]