新型纠错编码技术在数字电视地面传输中的应用
Application of New Error Correction Coding Techniques in Digital Terrestrial Television Broadcasting
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作者信息
- 1. 西藏自治区广播电视局153台,西藏 那曲 852300
- 折叠
摘要
纠错编码技术是保障数字电视地面传输可靠性、提高频谱利用率的关键.通过分析数字电视地面信道的传播特点,并阐述多种因素对传输性能的影响,明确了物理层对纠错编码技术的迫切需求.在讨论传统编码技术的局限后,介绍低密度奇偶校验(Low-Density Parity-Check,LDPC)码、Polar码的基本原理、编译码实现,并进一步分析LDPC-Polar级联码的应用策略.
Abstract
Error correction coding technology is the key to ensure the reliability of digital television terrestrial transmission and improve the utilization rate of spectrum.By analyzing the transmission characteristics of digital television terrestrial channel,and expatiating the influence of many factors on transmission performance,the urgent demand for error correcting coding technology in physical layer is clarified.After discussing the limitation of traditional coding technology,this paper introduces the basic principle,encoding and decoding of Low-Density Parity-Check(LDPC)code and Polar code,and further analyzes the application strategy of LDPC-Polar concatenation code.
关键词
数字电视/地面传输/纠错编码Key words
digital television/terrestrial broadcasting/error correction coding引用本文复制引用
出版年
2024
NETL
NSTL
万方数据