DVB-S2标准下提高数字电视信号频谱效率的方法  

Method of Improving DTV Spectrum Efficiency Based on DVB-S2 Standard

作　　者：尚建民 韩瑞杰 

机构地区：[1]中国广播电视国际经济技术合作总公司,北京100045 [2]中央电视台总编室,北京100859

出　　处：《电视技术》2014年第11期137-139,共3页Video Engineering

摘　　要：DVB-S2较DVB-S在频谱利用率上有明显提高。主要讨论在单转发器上传输多个数字电视载波的应用中,在DVBS2标准技术框架下,通过选取不同的调制参数、创新应用升余弦滚降系数而进一步提高频谱利用率的方法。为真正发挥DVBS2的技术优势进行了有益的探索。The spectrum efficiency is remarkably improved by DVB-S2 compared with DVB-S. Based on the technological framework of DVB-S2 standard, a novel method to improve further the spectrum efficiency is proposed in this paper by choosing different modulation parameters and utilizing the raised cosine roll-off coefficient in the transmission of multiple DTV carriers with single transponder.

关 键 词：DVB-S2 调制方式 FEC 升余弦滚降系数 

分 类 号：TN949[电子电信—信号与信息处理]