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Performance analysis of decision-directed maximum-likelihood phase estimators for M-PSK modulated signals

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3 Author(s)
De Gaudenzi, R. ; Eur. Space Res. & Technol. Centre, Noordwijk, Netherlands ; Garde, T. ; Vanghi, V.

We investigate performance of decision-directed maximum-likelihood carrier phase synchronizers for M-PSK signalling (M⩽8) on the AWGN channel. Decision-directed feedback (DD-FB) and feedforward decision feedback (FF-DFB) structures are analyzed and compared in detail. A new, accurate model for the FF-DFB synchronizer is presented. Open loop characteristics and closed loop performance, in terms of steady-state jitter and cycle slip rate, are presented in the same framework for both the DD-FB and FF-DFB synchronizers. Performance comparison between the two phase estimator architectures is finally made for each modulation scheme investigated

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Communications, IEEE Transactions on  (Volume:43 ,  Issue: 12 )