电讯技术Issue(11)：1471-1475,5.DOI:10.3969/j.issn.1001-893x.2013.11.013
一种适用于宽带短波通信OFDM系统符号定时同步的新方法
A New Symbol Timing Synchronization Scheme for OFDM Systems in HF Communication
摘要
Abstract
An efficient non-data-aided( NDA) symbol timing synchronization approach is proposed for or-thogonal frequency division multiplexing(OFDM) systems in wideband shortwave or high frequency(HF) communication. Based on the property that null subcarriers carry no data, this method can lock the timing point into the safe region through minimizing the power of signals in null subcarriers, thus achieving symbol timing synchronization. It can effectively combat the multipath effects which is desirable for HF communi-cation. Simulation results confirm that compared with the Al-Dweik's scheme, the proposed approach yields a better synchronization performance and is applicable to various signalling constellations over wide-band HF communication channels.关键词
正交频分复用/短波通信/符号定时同步/多径效应Key words
orthogonal frequency division multiplexing/HF communication/symbol timing synchronization/multipath effect分类
信息技术与安全科学引用本文复制引用
蒋涌,许炜阳..一种适用于宽带短波通信OFDM系统符号定时同步的新方法[J].电讯技术,2013,(11):1471-1475,5.基金项目
国家自然科学基金资助项目(61201177)@@@@The National Natural Science Foundation of China (No.61201177) （61201177）
