Title :
Achieving modified CRLB for estimating carrier phase offset through LS and MLE
Author :
Shahzad, A. ; Qureshi, T.R. ; Maud, M.A. ; Loan, A.
Author_Institution :
Dept. of Comput. Sci., Lahore Univ. of Manage. Sci., Pakistan
Abstract :
An estimate of the carrier phase offset of a linearly modulated signal is found by the method of least squares (LS) and maximum likelihood estimate (MLE). Error variance of the estimate achieves the modified Cramer-Rao lower bound (CRLB) at high SNR. Also a comparison of the two estimates, LS and ML, for the phase offset is presented.
Keywords :
least squares approximations; maximum likelihood estimation; modulation; phase estimation; MLE; SNR; carrier phase offset; error variance; least square methods; linearly modulated signal; maximum likelihood estimation; modified Cramer-Rao lower bound;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20045670
