何裕舒,郭浩,张阳

• 1:武汉船舶通信研究所

摘要(Abstract)：

由于Minn算法得到的定时同步度量函数会在不正确的定时同步点处产生多个差别较小的次峰且峰值形成缓慢,从而造成符号定位点模糊,定时同步存在偏差的问题。从SC-FDE系统同步技术着手,提出一种基于Minn算法的改进算法。该算法利用具有良好自相关特性的ZC(Zadoff-Chu)训练序列代替原有PN序列,且将重复的帧结构变更为中心对称的形式,并将训练序列进行多次相关以提高精度。通过对2种算法进行Matlab仿真论证,结果表明,所提的改进算法定时尺度非常尖锐,且在同等条件下有更低的均方差。

关键词(KeyWords)： 无线传输;低信噪比;单载波频域均衡;训练序列;帧结构;定时同步算法

Abstract:

Keywords:

基金项目(Foundation): 国防预研项目(6141B04050101)~~

作者(Author): 何裕舒,郭浩,张阳

DOI: 10.16652/j.issn.1004-373x.2018.02.004

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