Title :
High SNR performance analysis of a blind frequency offset estimator for cross qam communication
Author :
Colonnese, Stefania ; Panci, Gianpiero ; Rinauro, Stefano ; Scarano, Gaetano
Author_Institution :
Dipt. INFOCOM, Univ. di Roma, Rome
fDate :
March 31 2008-April 4 2008
Abstract :
In this paper we present theoretical performance analysis for a blind frequency offset estimator for cross quadrature amplitude modulated constellations. The estimator is based on applying a tentative frequency offset compensation by means of a nonlinear transformation of the received signal samples and on estimating an accumulation function in different angular windows. For perfect frequency offset compensation, the measurements are suitably clustered and their accumulation, named "constellation phase signature" (CPS), is a peaked function of the window orientation. Hence, the frequency offset estimator is selected by maximization of the peakness of the accumulation function. The performance analysis is shown to match the numerical simulations for medium to high values of SNR.
Keywords :
blind source separation; frequency estimation; quadrature amplitude modulation; SNR performance analysis; accumulation function; angular windows; blind frequency offset estimator; constellation phase signature; cross QAM communication; cross quadrature amplitude modulated constellations; frequency offset compensation; nonlinear transformation; Frequency estimation; Performance analysis; Reactive power; Samarium; Frequency estimation; Quadrature amplitude modulation;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518237