A Uniqueness Guarantee Timing Synchronization Algorithm for MB-OFDM Based UWB Systems  

作　　者：WANG Xue QIAN Zhihong SUN Dayang 

机构地区：[1]College of Communication Engineering, Jilin University, Changchun 130012, China

出　　处：《Chinese Journal of Electronics》2013年第1期141-145,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural science Foundation of China （No.61071073）, Doctoral Fund of Ministry of Education of China （No.20090061110043）.

摘　　要：This paper presents a Polarity comparing and uniqueness guarantee （PCUG） timing synchronization estimation approach for MB-OFDM based UWB systems. Difference of the two cross correlation functions is com-puted, between a received symbol, the successive received symbol and predefined preamble sequence. It makes sense to propose polarity comparison and identification ideas to the scenario, for the result of cross correlation difference exceeding threshold is not always unique. If the polarity of the first exceeding threshold sample is different with that of predefined sequence, the current received sample is estimated to be the right timing point; otherwise the algorithm is put forward to find out a peak of correlation summation to figure out timing point. The proposed algo-rithm could make the uniqueness of timing index for sure. MSEs of PCUG are evidently lower than the reference al-gorithm. The total and exact synchronization probability could get as much as 98.98% and 95.92%

关 键 词：Polarity UNIQUENESS Timing synchro-nization Multi-band orthogonal frequency division multi-plexing （MB-OFDM） Ultra-wide band （UWB）. 

分 类 号：TN92[电子电信—通信与信息系统] TP301.6[电子电信—信息与通信工程]