Multi-edge Optimization of Low-Density Parity-Check Codes for Joint Source-Channel Coding

Conference: SCC 2013 - 9th International ITG Conference on Systems, Communication and Coding
01/21/2013 - 01/24/2013 at München, Deutschland

Proceedings: SCC 2013

Pages: 6Language: englishTyp: PDF

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Beltr˜ao Neto, H. V.; W. Henkel (Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany)

We present a novel joint source-channel coding system based on low-density parity-check codes where the amount of information about the source bits available at the decoder is increased by improving the connection profile between the factor graphs that compound the joint system. Furthermore, we propose an optimization strategy for the component codes based on a multi-edge-type joint optimization. Simulation results show a significant improvement in the performance compared to existent joint systems based on low-density parity-check codes.