Title :
A Robust Blind Symbol-Timing Synchronization for UWB-OFDM Systems
Author :
Li, ChangQing ; Liu, Danpu ; Yue, Guangxin
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun.
Abstract :
A robust blind symbol-timing synchronization scheme applicable to UWB-OFDM systems is presented. The proposed method is based on ZP (zero-padded prefix) power collection in the UWB-OFDM symbols whose ZP average power distribute regularly in the slide windows. The synchronization schemes in both Gauss channel and UWB channel are investigated. Average power distribution of the received signal in UWB channel is analysed in detail for accurate symbol synchronization. A multi-slide-windows method is designed in order to improve the performance of synchronization. Finally computer results are also demonstrate the superior performance of the new method in both Gauss channel and UWB channel
Keywords :
Gaussian channels; OFDM modulation; synchronisation; ultra wideband communication; Gauss channel; UWB channel; UWB-OFDM systems; average power distribution; multi-slide-windows method; robust blind symbol-timing synchronization; zero-padded prefix power collection; Convolution; Discrete Fourier transforms; Frequency synchronization; Gaussian channels; Information rates; Maximum likelihood estimation; OFDM modulation; Power distribution; Robustness; Signal analysis;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.45
