Title :
A Novel Carrier Frequency Offset Estimation Method for IEEE 802.16E System
Author :
Zhou, Hua ; Hayashi, Hiroyuki ; Kubo, Tokuro ; Zhang, Jie
Author_Institution :
Fujitsu R&D Center, Beijing
Abstract :
A new carrier frequency offset estimation method is proposed for OFDM based IEEE 802.16E system, with good tolerance to long-delay-spread multipath fading and time synchronization error. New designed correlation method utilizing approximate symmetry of the preamble can overcome the negative influence of imperfect periodicity caused by virtual subcarriers of preamble symbol. Simulations show that the proposed method can be more effective than CP based method in practical multipath fading channel, in terms of root mean square of estimation error. And the proposed method can be easily generalized for other OFDM based systems with inter- training symbol subcarrier spacing other than 3.
Keywords :
OFDM modulation; WiMax; correlation methods; fading channels; frequency estimation; mean square error methods; multipath channels; synchronisation; OFDM based IEEE 802.16E system; carrier frequency offset estimation method; correlation method; inter-training symbol subcarrier; long-delay-spread multipath fading; preamble symbol virtual subcarriers; root mean square; time synchronization error; wireless metropolitan area networks; Correlation; Design methodology; Estimation error; Fading; Frequency estimation; Frequency synchronization; OFDM modulation; Proposals; Root mean square; Timing;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.535
