Title :
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
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;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088345
