Synchronization for carrier frequency offset in wireless LAN 802.11a system

Author

Peng, Chia-Sheng ; Wen, Kuei-Ann

Author_Institution

Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

3

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

1083

Abstract

The paper describes a synchronization method for carrier frequency offset (CFO) in the IEEE 802.11a wireless LAN system, which adopts OFDM-based transmission techniques and provides several different transmission data rates up to 54 Mbit/s. The algorithm proposed provides an acquisition and a tracking stage for CFO estimation and compensation. After the processes of synchronizer and equalizer, error vector magnitude is used to evaluate the system´s performance under both AWGN and multipath fading channels. According to the simulation results, the algorithm resolves CFO problems efficiently with reasonable complexity.

Keywords

AWGN channels; OFDM modulation; computational complexity; data communication; equalisers; fading channels; frequency estimation; indoor radio; multipath channels; synchronisation; wireless LAN; AWGN channels; IEEE 802.11a; OFDM; acquisition stage; carrier frequency offset compensation; carrier frequency offset estimation; equalizer; error vector magnitude; fading channels; indoor environments; multipath channels; synchronization; tracking stage; wireless LAN; AWGN; Equalizers; Fading; Frequency estimation; Frequency synchronization; Local area networks; OFDM modulation; Physical layer; Societies; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088345

Filename

1088345