Title :
An Improved Estimation of Integer Frequency Offset in OFDM Systems Using ML Method
Author :
Kim, Geun Bae ; Lee, Wooju ; Jeong, Woojin ; Yoon, Dongweon ; Park, Sang Kyu
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul
Abstract :
In this paper, we propose a simple maximum likelihood (ML) estimation method with one training symbol for the integral part of the carrier frequency offset between the transmitter and the receiver in orthogonal frequency division multiplexing (OFDM) systems. The carrier frequency offset is obtained by using the information of the training symbol. The performance of each estimator is compared through Monte Carlo simulation, and we show that proposed estimator performs better than the conventional one
Keywords :
OFDM modulation; frequency estimation; maximum likelihood estimation; ML method; OFDM system; integer frequency offset estimation; maximum likelihood estimation; orthogonal frequency division multiplexing; receiver; training symbol; transmitter; Fast Fourier transforms; Frequency domain analysis; Frequency estimation; Maximum likelihood estimation; OFDM; Performance analysis; Quadrature amplitude modulation; Signal generators; Timing; Transmitters;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284844
