摘要
以电力线作为通信介质,能够实现成本低、覆盖面广的语音和数据传输。目前广泛使用的电力线载波机主要有数字化载波机和全数字载波机两种。文中介绍了一种通用型数字式电力线载波机,该载波机基于软件无线电的理念,在通用的硬件平台上,通过加载不同的软件,可分别实现上述两种载波机功能,具有完全可编程、模块化、兼容性强的特点。阐述了该载波机的设计原理、硬件组成,引入了正交调制的概念,并详细介绍了单边带调制和网格编码调制的软件实现方法。
The 'Software-Radio' concept is applied to power line carrier (PLC) and a universal digital PLC system is designed. With a universal hardware platform, this system is capable of implementing the two widely used PLC work modes, i. e. digitized PLC and all-digital PLC by loading different software. The design principle, hardvvare configuration and the software design of the universal digital PLC system are described. The relevant techniques are detailed including orthogonal modulation, single-subband modulation and trellis code modulation.
出处
《电力系统自动化》
EI
CSCD
北大核心
2004年第18期86-89,共4页
Automation of Electric Power Systems
关键词
电力线载波机
正交调制
单边带
正交上变频
网格编码调制
power line carrier (PLC)
orthogonal modulation
single-subband (SSB)
quadrature digital up-converter
trellis code modulation (TCM)
