中文摘要：

polar codes具有丰富的代数结构和优秀的分析特性,具有明确的编码方法和译码算法,但是其连续删除译码算法由于采用串行按位译码的方法,从而导致整体译码时间较长.利用改进的路径度量值计算方法减少了SC译码器判定的次数,从而使得整体的译码时间大大降低,提高了原SC算法测输出.实验数据表明该方法不仅拥有较低的译码时间,同时还能获得更好的性能.

英文摘要：

Polar codes have a wealth of algebraic structure and good analytical characteristics. It is the first to adopt the method of structural code to construct, and has lower coding and decoding complexity. But due to the successive cancellation decoding algorithm using the serial decoding method, resulting in decoding delay is longer than the whole. In this paper, the improved calculation method of the path metric reduces the SC decoder for deter- mining the number of times, so as to make the whole decoding delay greatly reduced. The simulation results show that this method not only has low decoding delay, at the same time, still can obtain better performance.