Frequency offset estimation for GSM and EDGE

A low complexity method for estimating the frequency offset in global system mobile(GSM) and enhanced data rates for GSM evolution (EDGE) is proposed. The method isbased on minimising a suitable least squares (LS) metric utilising both the pilot (training)and tail symbols available in GSM and EDGE. It is shown that the tail symbols areimportant in estimating frequency offset even though they are few relative to the pilot(training) symbols. Via computer simulation it is shown that overall performancecompares favourably to standard methods for estimating the frequency offset in GSMsuch as the method by Luise and Regiannini (L&R;). ReferencesC. Heegard, J.A. Heller and A.J. Viterbi, A microprocessor-based PSK modem for packettransmission over satellite channels, IEEE Trans. Commun. COM-26 (1978) (5), pp.552–564.S. Kay, Modern Spectral Estimation: Theory and Applications, Prentice Hall, EnglewoodCliffs, NY (1988). S.A. Tretter, Estimating the frequency of a noisy sinusoid by linear regression, IEEETrans. Inform. Theory IT-31 (1985) (6). S. Kay, A fast and accurate single frequency estimator, IEEE Trans. Acoust. SpeechSignal Process. 37 (1989) (12).D.W. Tufts and R. Kumaresan, Estimation of frequencies of multiple sinusoids: Makinglinear prediction perform like maximum likelihood, Proc. IEEE 70 (1982) (9), pp. 975–989.G.W. Lank, I.S. Reed and G.E. Pollon, A semi-coherent detection and Doppler estimationstatistic, IEEE Trans. Aerospace Electron. Syst. AES-9 (1973) (2), pp. 151–165.openUP – February 2007