Title :
Blind carrier frequency offset estimation in SISO, MIMO, and multiuser OFDM systems
Author :
Yao, Yingwei ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
Relying on a kurtosis-type criterion, we develop a low-complexity blind carrier frequency offset (CFO) estimator for orthogonal frequency-division multiplexing (OFDM) systems. We demonstrate analytically how identifiability and performance of this blind CFO estimator depend on the channel´s frequency selectivity and the input distribution. We show that this approach can be applied to blind CFO estimation in multi-input multi-output and multiuser OFDM systems. The issues of channel s, multiuser interference, and effects of multiple antennas are addressed analytically, and tested via simulations.
Keywords :
MIMO systems; OFDM modulation; antenna arrays; computational complexity; frequency estimation; mean square error methods; radiofrequency interference; MIMO system; SISO system; blind carrier frequency offset estimation; channel frequency selectivity; kurtosis-type criterion; multiinput multioutput system; multiple antenna; multiuser OFDM system; multiuser interference; orthogonal frequency-division multiplexing; Collaboration; Digital video broadcasting; Frequency division multiplexing; Frequency estimation; Government; Interference; MIMO; OFDM; Performance analysis; Robustness;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.840623
