广播电视卫星传输链路设计与性能优化  

Radio and Television Satellite Transmission Link Design and Performance Optimization

作　　者：张虎 吕弦 ZHANG Hu;LYU Xian(Wenshang county Converged Media Center,Jining 272501,China)

机构地区：[1]汶上县融媒体中心,山东济宁272501

出　　处：《电视技术》2025年第2期117-119,共3页Video Engineering

摘　　要：深入探讨广播电视卫星传输链路的设计原理和性能优化方法,以及抗干扰、多波束覆盖等技术在提升系统整体性能方面的应用。分析卫星链路预算、调制编码技术及多址接入方式等关键因素,提出基于自适应编码调制的链路优化方案。该方案利用信道状态信息动态调整传输参数,有效提高链路可靠性和频谱利用率。仿真结果表明,与传统固定参数方案相比,该方案在不同信道条件下可将链路容量提升15%~30%。This paper discusses the design principle and performance optimization method of radio and television satellite transmission link,and the application of anti-interference and multi-beam coverage technology in improving the overall performance of the system.The key factors such as satellite link budget,modulation coding technology and multiple access mode are analyzed,and a link optimization scheme based on adaptive coding modulation is proposed.In this scheme,the channel state information is used to dynamically adjust the transmission parameters,which can effectively improve the link reliability and spectrum utilization.The simulation results show that compared with the traditional fixed parameter scheme,the proposed scheme can increase the link capacity by 15%~30%under different channel conditions.

关 键 词：卫星通信 链路预算 自适应编码调制 多址接入 抗干扰 

分 类 号：TN948.14[电子电信—信号与信息处理]