一种基于CORDIC算法的WCDMA系统自动频偏补偿方案  

An efficient automatic frequency offset compensation method based on CORDIC algorithm

作　　者：何琴[1] 吴俊 

机构地区：[1]浙江大学智能系统与控制研究所工业控制技术国家重点实验室,浙江杭州310027 [2]浙江中控技术股份有限公司,浙江杭州310053

出　　处：《电子技术应用》2011年第6期106-109,共4页Application of Electronic Technique

基　　金：国家自然科学基金(60774001;60736021;60721062);973计划(2009CB320603);863计划(2008AA042602);111计划(B07031);杭州市钱江特聘专家计划的资助

摘　　要：针对WCDMA无线系统提出了一种采用两级调整策略的高效自动频偏补偿方案。首先根据Rake接收机内部指峰估计的频偏,通过门限控制后加权合并计算,进行射频VCO的调整,然后由指峰内部各自对调整后的残余频偏采用高效的CORDIC算法进行补偿。这种自动频偏补偿方案简单易行,可有效地节省硬件资源。实验仿真结果证明了该方法的有效性和可行性。An efficient automatic frequency offset compensation method for WCDMA system, which is developed by two stages adjustment, is proposed. With the threshold control, the estimated frequency offset from the fingers of the rake receiver weighted combined is used to adjust the radio frequency VCO; the remainder frequency offset is compensated by the respective finger. Frequency offset compensation, which is applying CORDIC algorithm, can save considerable hardware resource and implement simply as well. The performance of the automatic frequency control system based on quantified CORDIC can match that of float point. The feasibility and effectiveness of the new method is verified by the results of simulation.

关 键 词：WCDMA CORDIC算法 自动频偏补偿 

分 类 号：TN929.5[电子电信—通信与信息系统]