Construction of rate-compatible (RC) low-density parity-check (LDPC) convolutional codes based on RC-LDPC block codes |
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| Authors: | Liwei Mu Guojun Han Zhiyong Liu |
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| Institution: | 1.Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou,China;2.School of Information Engineering,Guangdong University of Technology,Guangzhou,China;3.School of Information and Electrical Engineering,Harbin Institute of Technology,Shandong,China |
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| Abstract: | In this paper, a family of rate-compatible (RC) low-density parity-check (LDPC) convolutional codes can be obtained from RC-LDPC block codes by graph extension method. The resulted RC-LDPC convolutional codes, which are derived by permuting the matrices of the corresponding RC-LDPC block codes, are systematic and have maximum encoding memory. Simulation results show that the proposed RC-LDPC convolutional codes with belief propagation (BP) decoding collectively offer a steady improvement on performance compared with the block counterparts over the binary-input additive white Gaussian noise channels (BI-AWGNCs). |
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