Iterative Demodulation for DVB-S2

Authors:

Clevorn, T. ,  Oldewurtel, F. ,  Godtmann, S. ,  Vary, P.

Book Title:

Proceedings of IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

Volume:

4

Pages:

p.p. 2576 - 2580

Address:

Berlin, Germany

Date:

Sep. 2005

Language:

English

Abstract

We propose the application of iterative demodulation at a DVB-S2 receiver. The demodulation is improved by feedback of extrinsic information from the decoder of the LDPC channel code. The presented simulation results show an enhancement of about 0.3 dB, which is notable taking the gap to the Shannon limit into account. The additionally required computational demand is negligible and the receiver only needs to be slightly modified. With the unmodified transmitter the proposed scheme is completely standard compliant.

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