Title :
Improved Pilot Symbol-Assisted Estimation of Integer Frequency Offset for OFDM
Author :
Eu-Suk Shim ; Hyun Yang ; Jee-Hyun Kim ; Hyoung-Kyu Song
Author_Institution :
Sejong Univ., Seoul
Abstract :
This paper deals with a simple way of estimating the integer frequency offset (IFO) of orthogonal frequency division multiplexing (OFDM) system. By modifying the conventional maximum likelihood (ML) estimator to have two-stage estimation strategy, the IFO estimator is derived. Simulations indicate that the proposed IFO estimator works robustly when compared to ML estimator.
Keywords :
OFDM modulation; frequency estimation; maximum likelihood estimation; OFDM system; improved pilot symbol-assisted estimation; integer frequency offset; maximum likelihood estimator; AWGN; Fading; Frequency estimation; Maximum likelihood estimation; OFDM; Robustness; System performance; Timing; Uncertainty; Wireless networks;
Conference_Titel :
Wireless Broadband and Ultra Wideband Communications, 2007. AusWireless 2007. The 2nd International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-0-7695-2846-5
Electronic_ISBN :
978-0-7695-2846-5
DOI :
10.1109/AUSWIRELESS.2007.38
