摘要
双边带抑制载波调制方法在提高发射效率的同时,也为接收端的载波提取增加了难度.针对此问题,依据已调信号的物理特性和数学特性,提出了3种不同的解决方案及其适用范围.实验结果表明:仿真和理论推导结果基本一致,并可将该理论推广到单边带信号和残留边带信号的载波提取中.
The method of double sideband suppressed carrier modulation raises the sending efficiency,while it is more difficult to extract the carrier at the same time, for this problem, three different means are proposed according to the special property of physics and mathematics of DSB -SC. The study shows that the resut of the simulation is consistent with the theory,and the methods can be extended conveniently into SSB and VSB.
出处
《华北水利水电学院学报》
2007年第5期37-40,共4页
North China Institute of Water Conservancy and Hydroelectric Power
基金
华北水利水电学院青年科研基金项目(HSQJ2005015)
关键词
DSB—SC信号
载波
平方变换
导频
DSB - SC signal
carrier
square transformation
pilot frequency
