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Complexity reduction scheme in encoding and decoding for polar codes

机译:极性码编码和解码中的复杂度降低方案

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摘要

Polar coding has received a lot of consideration due to its nature of capacity achieving under various condition of coding. Low complexity is introduced by using successive cancelation decoding method. By using this large-error correction capacity is achieved for finite length of codes.in this work we propose a new approach for polar codes to achieve the better performance. Reduction of complexity is performed by reducing the number of XOR operations and the performance of the system is enhanced by using systematic polar codes. XOR operations are discarded by using path searching method, in this approach only desired path is considered others are discarded with the help of a posteriori probability. The proposed approach is implemented using MATLAB tool and the performance is achieved and compared in terms of bit error rate and frame error rate.
机译:极性编码由于其在各种编码条件下实现容量的性质而受到了很多考虑。通过使用连续抵消解码方法来引入低复杂度。通过使用有限的代码长度实现这种大错误校正能力。在这项工作中,我们提出了一种用于极性代码的新方法,以实现更好的性能。通过减少XOR运算的数量来降低复杂度,并且通过使用系统的极性码来增强系统的性能。通过使用路径搜索方法来丢弃XOR运算,在这种方法中,仅在后验概率的帮助下才将期望的路径视为其他路径。所提出的方法是使用MATLAB工具实现的,并且在误码率和帧误码率方面实现了性能并进行了比较。

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