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In this paper, a parallel concatenated structure is proposed to improve the performance of polar codes in finite length in which multiblocks systematic polar codes (SPC) and recursive systematic convolutional codes (RSC) are combined. We first design a weighted iterative decoding algorithm for the proposed structure such that better bit error rate performance can be obtained. Then, a deliberated interleaver...
In this paper, we propose a design method for short block length low-density parity-check (LDPC) codes which use the structure of semi-random parity-check matrix and the optimal degree distribution pairs derived from density evolution algorithm. Simulation results show that the bit error performance of the designed code is better than Turbo codes with the same block length and code rate when Signal...
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