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Design of Convergence-Optimized Non-Binary LDPC Codes over Binary Erasure Channel

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3 Author(s)
Yang Yu ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China ; Wen Chen ; Lili Wei

In this letter, we present a hybrid iterative decoder for non-binary low density parity check (LDPC) codes over binary erasure channel (BEC), based on which the recursion of the erasure probability is derived to design non-binary LDPC codes with convergence-optimized degree distributions. The resulting one-step decoding tree is cycle-free and achieves lower decoding complexity. Experimental studies show that the proposed convergence-optimization algorithm accelerates the convergence process by 33%.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 4 )