Title :
Robust Integer Frequency Offset Estimation for OFDM System
Author :
Eu-Suk Shim ; Hyoung-Kyu Song ; Young-Hwan You ; Byoung-Heon Lee ; Jae-Hoon Yi
Author_Institution :
Sejong Univ., Seoul
Abstract :
Orthogonal frequency division multiplexing (OFDM) systems are highly sensitive to carrier frequency offset and symbol timing error. This paper deals with estimation method of integer frequency offset (IFO) without the aid of pilot symbols. The proposed IFO estimator exploits two consecutive identical OFDM data symbols with only change of phase. To demonstrate the efficiency of the proposed IFO estimators, comparisons are made with other existing estimators in terms of error performance, estimation range, and complexity.
Keywords :
OFDM modulation; OFDM system; integer frequency offset estimation; orthogonal frequency division multiplexing; Doppler shift; Estimation error; Fading; Frequency estimation; Frequency synchronization; OFDM; Phase estimation; Robustness; Timing; 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.2007.68
