计算机工程与应用2017，Vol.53Issue(4)：140-144,5.DOI:10.3778/j.issn.1002-8331.1507-0035
一种新的变步长频域块LMS算法
Variable step size frequency domain block LMS algorithm
摘要
Abstract
For that the traditional frequency domain block LMS algorithm which is used for the narrowband interference suppression in Direct Sequence Spread Spectrum(DSSS)communication anti-jamming system leads to a conflict of con-vergence speed and steady stage error, a new variable step size FBLMS algorithm is proposed, it is the ratio of the remaining interference of the output signal and the overall noise signal to control the variable step size factor update, as interference is filtered, the step size factor is also reduced, making the DSSS communications jamming system to obtain better suppres-sion interference effect. Firstly, DSSS communications jamming system based on the frequency domain block LMS algo-rithm is introduced. Then the proposed variable step size FBLMS is analyzed. Finally, simulation comparison of this algo-rithm and traditional algorithm are carried out. Theory analysis and simulation results show that the VSS-FBLMS algo-rithm can effectively filter out the narrowband interference. The anti-jamming performance of VSS-FBLMS algorithm can exceed the traditional FBLMS algorithm, convergence rate and steady-state error is also superior to the traditional FBLMS algorithm.关键词
直接序列扩频/频域块LMS算法/变步长/窄带干扰Key words
direct sequence spread spectrum/frequency domain block LMS algorithm/variable step size/narrowband interference分类
信息技术与安全科学引用本文复制引用
陈彦冠,丁文锐,刘春辉..一种新的变步长频域块LMS算法[J].计算机工程与应用,2017,53(4):140-144,5.基金项目
国家高技术研究发展计划(863)(No.2013AA122101) （863）
国家部委预先研究基金资助项目. （）
