Title :
A Unitary ESPRIT algorithm for carrier frequency offset estimation
Author :
Ferreira, Tadeu N. ; Netto, Sergio L. ; Diniz, Paulo S R
Author_Institution :
Telecommun. Dept., Fed. Fluminense Univ. (UFF), Niteroi, Brazil
Abstract :
This article presents a low-complexity parametric algorithm for the estimation of the carrier frequency offset (CFO) in orthogonal frequency division multiplexing systems. The proposed algorithm is equivalent to the Unitary ESPRIT algorithm, originally devised for estimating the direction-of-arrival of a wave front, now applied to the CFO scenario. It is verified that the proposed algorithm reduces the overall computational complexity in around 40%, while sustaining the error-rate performance achieved by the standard ESPRIT algorithm.
Keywords :
OFDM modulation; computational complexity; direction-of-arrival estimation; carrier frequency offset estimation; computational complexity; direction-of-arrival estimation; low-complexity parametric algorithm; orthogonal frequency division multiplexing systems; unitary ESPRIT algorithm; Computational complexity; Direction of arrival estimation; Discrete Fourier transforms; Estimation; OFDM; Signal processing algorithms; Array signal processing; Direction of arrival estimation; Parameter estimation;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937644
