Title :
On synchronization algorithms for OFDMA based wireless MAN system
Author :
Nandula, Sridhar ; Giridhar, K.
Author_Institution :
Indian Inst. of Technol. Madras, Chennai
Abstract :
In this paper, robust and efficient frame detection, symbol timing synchronization, frequency synchronization and cell ID detection techniques suitable for IEEE 802.16d/e wireless MAN system are proposed. The proposed timing synchronization algorithm exploits periodicity in preamble and also cyclic prefix (CP) periodicity to find the orthogonal frequency division multiplexing (OFDM) symbol boundary. This algorithm is a novel combination of preamble and CP self-correlation information to achieve symbol timing synchronization. The proposed frequency synchronization algorithm also uses self-correlation result of preamble and CP. Cell ID detection is done using the cross correlation properties of the preamble. The proposed synchronization algorithms can do synchronization even under low SNRs, high frequency offset, and multipath fading channels.
Keywords :
AWGN channels; OFDM modulation; cellular radio; correlation methods; metropolitan area networks; multipath channels; synchronisation; IEEE 802.16d/e wireless MAN system; Metropolitan Area Network; OFDMA; cell ID detection technique; cyclic prefix periodicity; frame detection; multipath fading channels; orthogonal frequency division multiplexing; self-correlation information; symbol timing synchronization; synchronization; Binary phase shift keying; DSL; Frequency synchronization; Local area networks; OFDM modulation; Quadrature amplitude modulation; Radio frequency; Timing; Transmitters; Wireless LAN;
Conference_Titel :
Telecommunications and Malaysia International Conference on Communications, 2007. ICT-MICC 2007. IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4244-1094-1
Electronic_ISBN :
978-1-4244-1094-1
DOI :
10.1109/ICTMICC.2007.4448691
