摘要
设计了一类适用于OFDM系统具有良好理想相关性的前导码结构。基于此前导码,提出了一种适用于OFDM系统的基于匹配滤波结构的高效帧定时同步捕获方法,该算法具有非常高的效率并且能够准确估计出定时同步位置。计算机仿真结果表明该捕获方法在低信噪比下具有较高捕获同步概率,而且同步精度很高。
A design method of a special class of preamble codes for OFDM systems with perfect auto-correlation performance is given in this paper.And then,based on these special preamble codes,a new frame synchronization algorithm used matched filter structure for OFDM systems was proposed.The proposed algorithm has very high efficient and can afford accurate frame synchronization time point.The computer simulation results show that the synchronization probability of the proposed algorithm is very high at low SNR.
出处
《微波学报》
CSCD
北大核心
2011年第1期87-90,共4页
Journal of Microwaves
基金
"863"重点项目(2009AA011205)
国家自然科学基金(60472064)
