基于高速Modem的电力线载波数字接入技术  

DIGITAL ACCESS TECHNOLOGY OF PLC BASED ON RIGB-SPEED MODEM

作　　者：李鹏[1] 黄芝平[1] 张弈猛[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《电力系统自动化》2001年第16期53-55,共3页Automation of Electric Power Systems

摘　　要：介绍了在开发数字式电力线载波通信系统过程中涉及的一项关键技术——电力线载波数字接入技术。数字式电力线载波通信系统采用话音压缩、数字编码、数字复接等技术 ,完成话音与远动数据的汇合 ,以 TCM(格栅编码调制 )方式在电力线上传输高频信号 ,在接收端采用 TCM解调、Viterbi译码、自适应均衡等技术再生恢复出原始信息。其中高速 Modem采用 AD公司 Modem专用开发芯片 ADSP— 2 1 mod870 ,以一整套软、硬件解决方案高效实现了专用Digital access technology of PLC, the key technology of developing the digital PLC system, is discussed in this article. Using the technologies of speech compression, digital coding and digital multiplex, the digital PLC system completes the syncretism of speech and data. High frequency signal is transmitted through the power line as the mode of TCM. The technology of TCM demodulation, Viterbi decoding and adaptive equalization are used in the receiving module to resume the original signal. A new digital signal processor ADSP-21mod870 is adopted to develop the high-speed Modem. A complete solution based on the new processor achieves the high performance requirement of the specific Modem.

关 键 词：电力线载波通信 数字接入技术 MODEM 调制解调器 

分 类 号：TN913.6[电子电信—通信与信息系统]