一种基于SCL译码算法的局部贪心搜索极化码构造方法

By constructing polar codes through a local greedy search method, the problems of poor performance and high complexity under the SCL decoding algorithm are solved, the position of information bits in the insufficiently polarized channel is optimized, and the decoding performance of polar codes is improved.

CN115242253BActive Publication Date: 2026-07-17XIAN INSTITUE OF SPACE RADIO TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN INSTITUE OF SPACE RADIO TECH
Filing Date
2022-06-08
Publication Date
2026-07-17

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Abstract

一种基于SCL译码算法的局部贪心搜索极化码构造方法,包括1)给定初始约束条件;2)计算得到所有极化信道的可靠度,并按可靠度从高到底进行排序;3)在可靠的极化信道中放置信息比特,在不可靠的极化信道中放置冻结比特;4)在剩余的信道位置逐一地放置剩余的一个信息比特,然后进行译码,并逐一地记录下信息比特放置在各个位置的误码率;5)在误码率中找到最小值所对应的位置,作为所述步骤4)中的信息比特应该放置的位置,并放置该信息比特;6)重复步骤4)‑5),完成构造选取过程。本发明解决了现有技术中极化码构造方法SCL译码性能差且构造复杂度高的不足。
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