摘要
本文介绍了射频和调制质量关键指标包括MER(调制误码率)、BER(比特误码率)、星座图等。为保证数字电视信号传输质量,须合理规划设计MER指标,确保BER指标符合要求。本文介绍了软件实现方法,并通过星座图上的实验结果讨论调制误码率(MER)在数字电视系统中的影响。
In this paper, The radio frequency modulation and the quality of key indicators include the MER（modulation errorrate）,BER（bit error rate）,constellation,and so on.In order to make the BER index be up to guarantee the transmission quality of DTV,MER should be reasonably designed. This paper introduce the method of software, and discusses the influences brought by the MER in DTV system on constellation.
出处
《科技信息》
2011年第13期42-43,共2页
Science & Technology Information
关键词
MER
BER
星座图
QAM调制
MER
BER
Constellation
Quadrature amplitude modulation
