Title :
Effect of Adaptive Threshold on Time Synchronization Based on PN Sequences in OFDM System
Author :
Tian, Yuan ; Lei, Xia ; Tang, Wanbin ; Li, Shaoqian
Author_Institution :
UEST of China, Chengdu
Abstract :
In this paper, the time synchronization algorithm for orthogonal frequency division multiplexing (OFDM) system is analyzed. Based on the algorithm using PN sequence, different methods of setting adaptive detection threshold have been proposed before. We analyze the performance of the methods theoretically, and propose a method which is suitable for large dynamic range of SNR. The simulation indicates the method can satisfy the demand of OFDM system in multi-path fading channel.
Keywords :
OFDM modulation; adaptive signal detection; fading channels; multipath channels; synchronisation; OFDM system; PN sequences; adaptive detection threshold; multipath fading channel; orthogonal frequency division multiplexing; time synchronization; Analytical models; Dynamic range; Fading; Frequency estimation; Frequency synchronization; Interference; Mobile communication; OFDM; Performance analysis; Timing;
Conference_Titel :
Future Generation Communication and Networking (FGCN 2007)
Conference_Location :
Jeju
Print_ISBN :
0-7695-3048-6
DOI :
10.1109/FGCN.2007.111
