Novel Synchronization Algorithm for Flexible Sub-Carrier OFDM System

Author

Dong, Kanghui ; Yang, Fang ; Song, Jian ; He, Lifeng

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

fYear

2011

Firstpage

1

Lastpage

5

Abstract

Flexible sub-carrier orthogonal frequency division multiplexing (OFDM) system can easily adjust the bandwidth and center frequency by changing the active sub-carrier set, and is thus adopted in power line communication systems. In this paper, a new joint symbol timing and carrier frequency synchronization method for this system is proposed based on the down-sampling of the received signal and local sequence. The proposed method significantly reduces the complexity compared to the conventional cross-correlation algorithm, and could improve the synchronization performance compared with the sliding auto-correlation based method.

Keywords

OFDM modulation; carrier transmission on power lines; correlation methods; signal sampling; synchronisation; Flexible subcarrier orthogonal frequency division multiplexing system; active subcarrier set; carrier frequency synchronization method; flexible subcarrier OFDM system; joint symbol timing synchronization method; power line communication systems; received signal down-sampling; sliding auto-correlation based method; Complexity theory; Estimation; OFDM; Signal to noise ratio; Synchronization; Training;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6040053

Filename

6040053