极化码的一种改进的SC译码算法实现

摘要

极化码( Polar Codes)是基于信道极化现象的一种新的在理论上被证明可以达到香农极限的信道编码方法,并且具有较低的编译码复杂度,然而,由于传统的连续删除( SC )译码器是串行译码,在实际应用中所需的译码器会造成很高的译码延迟和误码率,所以本文主要对极化码的译码算法进行研究,提出了一种改进的SC译码算法的实现方法,降低了译码延迟和误码率,仿真结果表明改进的SC译码算法在译码性能上有了很大的提高.%Polar Codes is a channel coding method based on channel polarization phenomenon which is verified in theory to achieve the Shannon limit, and the coding and decoding is not complex. However, the traditional se-rial deletion ( SC) decoder is a serial decoding which always causes decoding delay and errors in practical appli-cation. In this paper we study the polarization code decoding algorithm and put forward a kind of improved algo-rithm to reduce the decoding delay and errors. The simulation results show that the improved decoding algorithm greatly improve decoding performance.