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基于非规则重复累加码(IRA)提出一种冗余递增自动重传协议(IR-HARQ)且该自动重传协议的性能取决于速率匹配删截IRA码的性能.在此基础上提出用线性规划结合一维概率密度演化算法解决核心的速率匹配删截IRA码的设计问题,并给出了设计结果.仿真表明:相比于基于turbo码的相应方案,所提方案的性能在短帧(帧长1024)下大体相仿,而在长帧(帧长4096)下表现出一定的优势.相比于turbo和低密度校验码,基于IRA码的方案在解码的复杂性以及并行化方面具有独到的优势.
Based on Irregular Repeat Accumulation Code (IRA), a redundant incremental automatic retransmission protocol (IR-HARQ) is proposed and its performance depends on the performance of rate matching punctured IRA codes. On the basis of this, The design of core rate matching punctured IRA codes is solved by combining with one-dimensional probability density evolution algorithm and the design results are given.The simulation results show that the performance of the proposed scheme is better than that of turbo codes Frame length 1024), and exhibits some advantages over long frames (frame length 4096). Compared with turbo and LDPC codes, the scheme based on IRA codes has the following advantages in decoding complexity and parallelization Unique advantages.