摘要
传统数字化电力线载波机通常应用单路数字韦瓦(Weaver)调制实现单边带调制,此时载波机在4kHz标称带宽内的音频有效传输频带为300Hz^3840Hz,即有效传输带宽为3540Hz。为了提高载波机的有效传输带宽,可采用多路数字韦瓦复调制的原理来实现载波机的单边带调制。文中介绍了多路数字韦瓦复调制的原理、实现方法及其与传统载波机的区别。
The traditional power line carrier equipment often makes use of digital single channel Weaver modulation to implement single-side-band （SSB） modulation. The audio effectively transmitted frequency band of the power line carrier equipment is 300 Hz - 3 840 Hz with 4 kHz nominal bandwidth, that is, the effectively transmitted bandwidth equals 3 540 Hz. To increase the effectively transmitted bandwidth, digital multiplex channel Weaver complex modulation is employed to implement SSB modulation. An account is given of the principles and implementation of the digital multiplex channel Weaver complex modulation, and a discussion made on the differences between the modulation and the traditional power line carrier equipment.
出处
《电力系统自动化》
EI
CSCD
北大核心
2007年第6期66-70,85,共6页
Automation of Electric Power Systems
关键词
电力线载波机
传输带宽
单路数字韦瓦调制
多路数字韦瓦复调制
内插滤波器
抽取
滤波器
频带利用率
power line carrier
transmitted bandwidth
digital single channel Weaver modulation
digital multiplex channel Weaver complex modulation
interpolation filter
decimation filter
bandwidth efficiency
