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| Protograph LDPC Based Distributed Joint Source Channel Coding |
| HONG Shaohua WANG Lin |
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Abstract This paper proposes a Distributed Joint Source-Channel Coding (DJSCC) scheme using Protograph Low Density Parity Check (P-LDPC) code. In the proposed scheme, the distributed source encoder sends some information bits together with the parity bits to simultaneously achieve both distributed compression and channel error correction. Iterative joint decoding is introduced to further exploit the source correlation. Moreover, the proposed scheme is investigated when the correlation between sources is not known at the decoder. Simulation results indicate that the proposed DJSCC scheme can obtain relatively large additional coding gains at a relatively small number of global iterations, and the performance for unknown correlated sources is almost the same as that for known correlated sources since correlation can be estimated jointly with the iterative decoding process.
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Received: 10 February 2017
Published: 30 June 2017
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| Fund:The Natural Science Foundation of Fujian Province (2014J01248), The National Natural Science of Foundation of China (61271241, 61671395) |
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Corresponding Authors:
HONG Shaohua
E-mail: hongsh@xmu.edu.cn
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