基于窗化法与新误差估计方法改进的BWGAD算法  

Improved BWGAD algorithm based on window method and new error estimation method

作　　者：王晨旭 伍春[3] WANG Chen-xu;WU Chun(School of Information Engineering,Southwest University of Science and Technology,Mianyang 621000,China;Neijing Advanced Technical School,Neijing 641000,China;School of National Defense Science and Technology,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]西南科技大学信息工程学院,四川绵阳621000 [2]内江高级技工学校,四川内江641000 [3]西南科技大学国防科技学院,四川绵阳621000

出　　处：《东北师大学报（自然科学版）》2020年第4期90-97,共8页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(61771410);国防科工局项目(JSHS2014404B002).

摘　　要：为提高Gardner算法的计算性能,基于窗化法对Gardner算法的插值器进行加窗处理,改善了插值滤波器的抗混叠性能,提高了算法计算精度与计算速度,并考虑到相邻符号间的串扰,基于MMSE准则对定时误差进行修正.综合以上2点改进,提出BWGAD算法.仿真结果证明,BWGAD算法的定时精度与收敛速度均优于传统Gardner算法.in order to improve the computational performance of the algorithm,the interpolator of Gardner algorithm is windowed based on the windowing method,which improves the anti-aliasing performance of the interpolation filter and improves the computational accuracy and speed of the algorithm.Finally,considering the influence of adjacent symbols,the timing error is improved based on MMSE criterion.Combining the above two improvements,the BWGAD algorithm in this paper is proposed.The simulation results show that the timing accuracy and convergence speed of BWGAD algorithm are better than those of classical Gardner algorithm.

关 键 词：插值滤波器 定时误差检测 GARDNER算法 窗化法 MMSE准则 

分 类 号：TN911.3[电子电信—通信与信息系统]