Title :
Blind carrier frequency offset estimation for OFDMA-based wireless networks
Author :
Yao, Yingwei ; Giannakis, Georgios B.
Author_Institution :
Dept. of Elec. & Comp. Eng., Illinois Univ., Chicago, IL, USA
Abstract :
Orthogonal frequency-division multiple access (OFDMA) is a promising multiuser access scheme. In this paper, we develop a low-complexity blind carrier frequency offset (CFO) estimator/or OFDMA-based wireless networks. A random frequency hopping/user permutation scheme is adopted to mitigate the effects of multipath fading and multiuser interference. The performance of this novel CFO estimator is tested via simulations and compared with existing blind CFO estimators.
Keywords :
OFDM modulation; frequency estimation; frequency hop communication; multi-access systems; radio networks; radiofrequency interference; OFDMA-based wireless network; blind carrier frequency offset estimation; blind carrier frequency offset estimator; multipath fading; multiuser access scheme; multiuser interference; orthogonal frequency-division multiple access; random frequency hopping scheme; user permutation scheme; Collaboration; DH-HEMTs; Digital video broadcasting; Fading; Frequency estimation; Government; OFDM; Symmetric matrices; Wireless LAN; Wireless networks;
Conference_Titel :
Military Communications Conference, 2004. MILCOM 2004. 2004 IEEE
Print_ISBN :
0-7803-8847-X
DOI :
10.1109/MILCOM.2004.1495120
