残留边带调制包络检波法原理研究  

Research on Principle of Amplitude Demodulation for VSB

作　　者：宋金玲[1] 赵培培[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《徐州师范大学学报（自然科学版）》2004年第4期27-30,共4页Journal of Xuzhou Normal University(Natural Science Edition)

摘　　要：从残留边带(VSB)调制原理出发,提出一种在发送端发射强载波,从而用包络检波法对VSB进行解调的方法,并对其抗噪声性能进行了详细的分析介绍.把VSB的滤波器分解成三个部分,每个部分分别为双边带(DSB)或单边带(SSB)信号方式,然后把三个信号叠加即可得到VSB.再叠加上接收到的强载波,用包络检波法检测出基带信号.该系统设备简单,易于实现,并且有较好的抗噪声性能.Based on the principle of VSB, a new kind of amplitude demodulation for VSB launching powerful carrier wave at dispatcher is proposed, and the anti-noise property of the system is analyzed. Filter of VSB is divided into three parts, and the DSB or SSB signals of the three parts are superposed as the VSB signal. After superposing a powerful carrier wave to the VSB signal, the base-band signal is detected by amplitude demodulation. The demodulation technique has some strong points such as anti-noise and easy implementation.

关 键 词：VSB 包络检波 载波 抗噪声性能 发送端 基带信号 调制 双边带 解调 接收 

分 类 号：TN949.197[电子电信—信号与信息处理] TN911[电子电信—信息与通信工程]