Title :
A Comment on “Blind Maximum Likelihood CFO Estimation for OFDM Systems Via Polynomial Rooting”
Author :
Attallah, S. ; Thiagarajan, L.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore
fDate :
4/1/2007 12:00:00 AM
Abstract :
In Gao and Nallanathan (IEEE Signal Process. Lett., vol.13, no.2, p.73-6, Feb. 2006), a polynomial rooting-based carrier frequency offset (CFO) estimator for OFDM systems was proposed. It is essentially based on the idea of rooting the first-order derivative of the cost function derived in Liu and Tureli (1998). We discuss the connection of this work with some earlier work in the literature (Attallah, 2004)
Keywords :
OFDM modulation; frequency estimation; maximum likelihood estimation; polynomials; OFDM system; blind maximum likelihood CFO estimation; carrier frequency offset estimator; orthogonal frequency division multiplexing; polynomial rooting; Computational complexity; Cost function; Frequency estimation; Gaussian noise; Iterative methods; Maximum likelihood estimation; OFDM; Polynomials;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2006.887785
