Rate-compatible network LDPC codes |
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| Authors: | WANG Jingyi LI Ying SUN Yue |
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| Affiliation: | (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. State Key Lab. of Wireless Mobile Communications, China Academy of Telecommunication Technology, Beijing 100083， China) |
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| Abstract: | A rate-compatible puncturing algorithm for network LDPC codes is proposed to achieve the minimum error probability, and decoding error probability is derived. The algorithm for finding variable nodes to be deleted based on the tanner graph of network LDPC codes is proposed, which is aimed at minimizing the decoding error probability and optimizing the puncturing pattern. Simulation results illustrate that, at BER=10-4, the proposed rate-compatible network LDPC codes have a coding gain of about 0.4dB compared with the codes obtained via the existing punctured methods. |
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| Keywords: | multi-access relay network low-density parity-check(LDPC)codes network LDPC code rate-compatible puncturing |
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