一种DVB-S2X标准16APSK软解调优化算法

doi:10.7523/j.issn.2095-6134.2021.05.010

中国科学院大学学报 ›› 2021, Vol. 38 ›› Issue (5): 660-665.DOI: 10.7523/j.issn.2095-6134.2021.05.010

一种DVB-S2X标准16APSK软解调优化算法

张厦^1,2, 姜泉江¹, 梁广¹, 余金培¹

1. 中国科学院微小卫星创新研究院, 上海 201203;
2. 中国科学院大学, 北京 100049

收稿日期:2019-12-30 修回日期:2020-03-26 发布日期:2021-09-13
通讯作者: 余金培
基金资助:
国家自然科学基金（61601295）、上海市启明星计划（18QA1404000）和国家重点研发计划（2017YFB0502902）资助

A soft demodulation optimization algorithm of 16APSK signal for DVB-S2X standard

ZHANG Sha^1,2, JIANG Quanjiang¹, LIANG Guang¹, YU Jinpei¹

1. Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-12-30 Revised:2020-03-26 Published:2021-09-13

摘要/Abstract

摘要： DVB-S2X标准在DVB-S2标准的基础上增加多种高阶APSK（amplitude phase shift keying）调制方式，其中16APSK调制增加8+8APSK星座图。主要分析16APSK星座图的特点，并提出一种新的软解调优化算法。该算法与LLR算法和Max-log-MAP算法相比，计算复杂度显著降低。仿真结果表明，优化算法性能损失小，在工程应用中具有较好的实用性。

关键词: DVB-S2X, 8+8APSK, LDPC, 软解调

Abstract: Multiple high-order APSK modulation schemes are added in the DVB-S2X standard on the basis of the DVB-S2 standard, and an 8+8APSK constellation is added based on the original 16APSK. In this paper, characteristics of a 16-APSK constellation are mainly analyzed, and a new soft demodulation optimization algorithm is proposed. Compared with the LLR algorithm and the Max-log-MAP algorithm, the proposed algorithm has the significantly reduced computational complexity. Simulation results of the three algorithms show that the optimization algorithm is small in performance loss and has good practicability in engineering application.

Key words: DVB-S2X, 8+8APSK, LDPC, soft demodulation

中图分类号:

TN927.23

张厦, 姜泉江, 梁广, 余金培. 一种DVB-S2X标准16APSK软解调优化算法[J]. 中国科学院大学学报, 2021, 38(5): 660-665.

ZHANG Sha, JIANG Quanjiang, LIANG Guang, YU Jinpei. A soft demodulation optimization algorithm of 16APSK signal for DVB-S2X standard[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(5): 660-665.

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一种DVB-S2X标准16APSK软解调优化算法

A soft demodulation optimization algorithm of 16APSK signal for DVB-S2X standard

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