基于最小均方误差的改进型IRA译码算法研究

IRA码的译码通常是利用BP译码算法来实现的,但是BP译码算法的硬件电路复杂。虽然最小和译码算法能够简化BP译码算法,但它是以牺牲性能为代价的。为了让译码算法在复杂度和译码性能之间取得较好的折衷,根据最小均方误差准则,提出一种改进型IRA译码算法。仿真结果表明,与BP译码算法相比,改进型IRA译码算法能够在降低算法复杂度的同时保持良好的译码性能,与最小和译码算法相比,改进型IRA译码算法的复杂度几乎不变,但译码性能得到了明显地提高。

Research on modified IRA decoding algorithm based on minimum mean square error

BP decoding algorithm is usually used to realize decoding of IRA codes,but the hardware circuit of BP decoding algorithm is complicated.Minimum-sum decoding algorithm can simplify BP decoding algorithm,but it is achieved by sacrificing performance.According to minimum mean square error rule,a modified IRA decoding algorithm is proposed in order to have a good tradeoff between complexity and decoding performance.The simulation results show that,compared with BP decoding algorithm,the modified IRA decoding al...