Title :
Robust timing synchronization for OFDM based wireless LAN system
Author :
Nandula, Sridhar ; Giridhar, K.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai, India
Abstract :
In this paper, a robust a and efficient frame detection and symbol timing synchronization technique suitable for IEEE 802.11a wireless LAN system is proposed. The proposed method does frame detection using a threshold comparison mechanism and performs orthogonal frequency division multiplexing (OFDM) symbol boundary detection using correlation techniques. This algorithm is a novel combination of self and cross correlation information to achieve symbol timing synchronization. The proposed algorithm can robustly detect the symbol boundary even under low SNRs, high frequency offset, and multipath.
Keywords :
OFDM modulation; correlation methods; radio receivers; radio transmitters; synchronisation; wireless LAN; IEEE 802.11a; OFDM system; correlation techniques; frame detection method; local area network; orthogonal frequency division multiplexing; symbol boundary detection; symbol timing synchronization method; wireless LAN system; Delay; Frequency estimation; Frequency synchronization; OFDM modulation; Phase shift keying; Quadrature amplitude modulation; Radio frequency; Robustness; Timing; Wireless LAN;
Conference_Titel :
TENCON 2003. Conference on Convergent Technologies for the Asia-Pacific Region
Print_ISBN :
0-7803-8162-9
DOI :
10.1109/TENCON.2003.1273182
