Title :
An Improved Autocorrelation Based Single Frequency Estimator with Reduced Complexity
Author :
Yang, Hyun ; Kim, Jee-Hyun ; Shim, Eu-Suk ; Song, Hyoung-Kyu ; You, Young-Hwan
Author_Institution :
Sejong Univ., Sejong
Abstract :
This paper proposes an improved single frequency estimator for flat fading channels. The proposed carrier frequency offset (CFO) estimator decreases the number of computations in the calculation of the autocorrelation function (AF) when compared to AF-based conventional estimators. The results shown that the proposed estimator achieves better performance than the existing estimators. Furthermore, the performance of proposed method has been observed to lie very close to the Cramer-Rao lower bound (CRLB).
Keywords :
channel estimation; correlation methods; fading channels; frequency estimation; AF-based conventional estimator; Cramer-Rao lower bound; autocorrelation based single frequency estimator; carrier frequency offset estimator; flat fading channel; Amplitude estimation; Autocorrelation; Fading; Frequency estimation; Maximum likelihood estimation; Performance loss; Phase estimation; Phase shift keying; Propagation losses; Timing;
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.2007.23
