Iterative Demodulation for DVB-S2

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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Clevorn, Thorsten; Vary, Peter (Institute of Communication Systems and Data Processing, RWTH Aachen University, Germany)
Oldewurtel, Frank (Institute for Wireless Networks, RWTH Aachen University, Germany)
Godtmann, Susanne (Institute for Integrated Signal Processing Systems, RWTH Aachen University, Germany)

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.