Title :
A Blind Feedforward Frequency Offset Estimator for OFDM Systems in Multipath Channels
Author :
Fusco, Tilde ; Tanda, Mario
Author_Institution :
Dipartimento di Ingegneria Elettronica e delie Telecomunicazioni, Univ. di Napoli Federico II
Abstract :
In this paper we consider the problem of blind feedforward carrier-frequency offset (CFO) estimation for orthogonal frequency division multiplexing (OFDM) systems in multipath channels. Specifically, by exploiting the least-squares approach a closed-form blind CFO estimator is derived. The proposed algorithm does not require the knowledge of the channel impulse response and/or the insertion of virtual subcarriers. Computer simulation results show that the derived CFO estimator can outperform previously proposed blind CFO synchronization algorithms
Keywords :
OFDM modulation; frequency estimation; least squares approximations; multipath channels; OFDM systems; blind feedforward frequency offset estimator; channel impulse response; least-squares approach; multipath channels; orthogonal frequency division multiplexing; Computer simulation; Dispersion; Feedback; Frequency estimation; Frequency synchronization; Intersymbol interference; Maximum likelihood estimation; Multipath channels; OFDM modulation; Transmitters;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-9710-X
Electronic_ISBN :
0-7803-9711-8
DOI :
10.1109/SPAWC.2006.346381
