Title :
Robust Time and Frequency Synchronization in OFDM based 802.11a WLAN systems
Author :
Manusani, S.K. ; Kshetrimayum, R.S. ; Bhattacharjee, R.
Author_Institution :
Dept. of Electron. & Commun., Indian Inst. of Technol., Guwahati
Abstract :
In this paper, robust and efficient time and frequency synchronization technique suitable for IEEE 802.11a wireless LAN system is proposed. The proposed method performs OFDM symbol boundary detection and frequency offset estimation using correlation techniques. The conjugate property of long preamble is used to reduce the computational complexity. In this proposed method, coarse time and fine frequency offset are estimated jointly and the frequency offset is estimated accurately before fine time estimation
Keywords :
OFDM modulation; computational complexity; correlation methods; frequency estimation; synchronisation; time-frequency analysis; wireless LAN; 802.11a WLAN system; OFDM symbol boundary detection; computational complexity; correlation technique; frequency offset estimation; orthogonal frequency division multiplexing; time-frequency synchronization; Autocorrelation; Bandwidth; Frequency estimation; Frequency synchronization; Intersymbol interference; Narrowband; OFDM; Robustness; Timing; Wireless LAN; Frequency synchronization; IEEE 802.11a; OFDM; Timing synchronization;
Conference_Titel :
India Conference, 2006 Annual IEEE
Conference_Location :
New Delhi
Print_ISBN :
1-4244-0369-3
Electronic_ISBN :
1-4244-0370-7
DOI :
10.1109/INDCON.2006.302775
