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Performance analysis of turbo-coded APSK modulations over nonlinear satellite channels

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3 Author(s)
De Gaudenzi, R. ; Eur. Space Agency, Noordwijk ; Guillén i Fabregas, A. ; Martinez, A.

This paper investigates the performance of M-ary amplitude-phase shift keying (APSK) digital modulation over typical nonlinear satellite channels. The effect of the satellite nonlinearity is studied, and distortion pre- and post-compensation techniques for coded APSK are presented. Moreover, clock timing, signal amplitude and carrier phase recovery schemes are discussed. For the latter, a new class of non turbo decoder-aided closed-loop phase synchronizers featuring good performance and low complexity is studied. Finally, an end-to-end coded APSK system simulator inclusive of the satellite channel model and synchronization sub-systems is discussed and its performance compared to standard trellis-coded QAM concatenated with Reed-Solomon codes, showing a remarkable gain in both power and spectral efficiency. Coded APSK, recently selected for the new standard -DVB-S2- for digital video broadcasting and interactive broadband satellite services, is shown to represent a powerand spectral-efficient solution for satellite nonlinear channels

Published in:

Wireless Communications, IEEE Transactions on  (Volume:5 ,  Issue: 9 )

Date of Publication:

September 2006

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