By Topic

Accurate performance analysis of maximum likelihood frequency estimator for OFDM systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Kai-Yi Fang ; Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Wern-Ho Sheen ; Jeng-Shin Sheu

In orthogonal frequency-division multiplexing (OFDM) technique, system performance is degraded greatly by the intercarrier interference (ICI) caused by the loss of orthogonality between subcarriers. One of such causes is due to the mismatch of the carrier frequency between the transmitter and the receiver. Various maximum likelihood (ML) methods have been proposed in the literature for carrier frequency estimation in OFDM systems. In theory, the performance of the ML estimators is asymptotically close to the Cramer-Rao lower bound (CRLB). However, it might be significantly different from it at the SNRs of practical interest. In this paper, a very accurate method is proposed for analyzing the performance of the ML estimators in terms of the mean and variance of the estimators. Simulation results show that the proposed method is much more accurate than the previous ones at low SNRs.

Published in:

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th  (Volume:4 )

Date of Conference:

6-9 Oct. 2003