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Research of an improved BP decoding arithmetic

机译:一种改进的BP解码算法研究

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Purpose - The purpose of this paper is to research the traditional belief-propagation (BP) decoding algorithm of low-density parity-check code. The big computation load is a shortcoming of traditional BP decoding algorithm. Accordingly, the paper provides an improved BP decoding algorithm which raises the decoding efficiency and reduces decoding time delay. Design/methodology/approach - An improved BP decoding algorithm is studied and the error correction performance of the improved BP decoding algorithm in the Gaussian channel is provided. Findings - The simulation result shows the improved BP decoding algorithm has lower computational complexity and higher decoding speed based on the premise of a little decoding performance loss. Research limitations/implications - The improved BP decoding algorithm has lower computational complexity and higher decoding speed based on the premise of a little decoding performance loss. Practical implications - The improved BP decoding algorithm raises the decoding efficiency and reduces decoding time delay. Originality/value - The decoding algorithm only needs to update the wrong bit information which might arise, but not update the bit information whose reliability is very high. The improved BP decoding algorithm raises the decoding efficiency and reduces decoding time delay.
机译:目的-本文的目的是研究传统的低密度奇偶校验码的置信传播(BP)解码算法。计算量大是传统BP解码算法的一个缺点。因此,本文提供了一种改进的BP解码算法,该算法提高了解码效率并减少了解码时间延迟。设计/方法/方法-研究了一种改进的BP解码算法,并提供了改进的BP解码算法在高斯信道中的纠错性能。结果-仿真结果表明,改进的BP解码算法在降低解码性能的前提下,具有较低的计算复杂度和较高的解码速度。研究局限性/意义-改进的BP解码算法在降低解码性能的前提下,具有较低的计算复杂度和较高的解码速度。实际意义-改进的BP解码算法提高了解码效率并减少了解码时间延迟。原创性/价值-解码算法仅需要更新可能出现的错误位信息,而无需更新可靠性很高的位信息。改进的BP解码算法提高了解码效率,减少了解码时间延迟。

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