Improvement on the Synchronization Algorithm for OFDM

Author

Li, Ming ; Chen, Jian ; Kuo, Yonghong

Author_Institution

Sch. of Telecommun. Eng., Xidian Univ., Xi´´an, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

Time and frequency synchronization is one of the most important tasks in an OFDM system. An improved adaptive synchronization algorithm is proposed in this paper. It combines the advantages of both decreasing step-size and constant step-size algorithms, meanwhile, a bidirectional search method is introduced into the new algorithm to accelerate the tracking speed. Simulation results show that the new algorithm has a better performance in convergence speed and precision, while its computational cost is almost changeless.

Keywords

OFDM modulation; search problems; synchronisation; time-frequency analysis; tracking; OFDM system; adaptive synchronization algorithm; bidirectional search method; computational cost; constant step-size algorithm; convergence speed; decreasing step-size algorithm; time-frequency synchronization algorithm; tracking speed; Approximation algorithms; Computational efficiency; DSL; Digital video broadcasting; Frequency estimation; Frequency synchronization; OFDM; Signal processing algorithms; Stochastic processes; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5305852

Filename

5305852