| 利用低压电力线传输数据存在的技术问题及对策 |
| |
| 引用本文： | 郑涛,张保会.利用低压电力线传输数据存在的技术问题及对策[J].电网技术,2004,28(22):44-47. |
| |
| 作者姓名： | 郑涛 张保会 |
| |
| 作者单位： | 西安交通大学电力工程系,陕西省,西安市,710049;西安交通大学电力工程系,陕西省,西安市,710049 |
| |
| 摘 要： | 低压电力线通信可分为远程抄表和实现高速Internet接入网两个主要应用方向.文章根据电力线信道的特性以及低速和高速信息传输的不同要求,指出对于数据传输速率较低的远程抄表系统可使用时分复用的扩频调制技术,但要注意选择合适的载波频率和扩频伪随机序列;高速Internet接入网则适合应用正交频分复用调制技术(OFDM),以克服低压电网对信号传输的不利影响,如噪声大、衰减强特点等.
|
| 关 键 词： | 电力线通信 扩频 正交频分复用(OFDM) 低压电网 |
| 文章编号： | 1000-3673(2004)22-0044-04 |
| 修稿时间： | 2004年4月19日 |
EXISTING TECHNICAL PROBLEMS IN DATA TRANSMISSION BY LOW-VOLTAGE POWER LINE AND THEIR COUNTERMEASURES |
| |
| ZHENG Tao,ZHANG Bao-hui.EXISTING TECHNICAL PROBLEMS IN DATA TRANSMISSION BY LOW-VOLTAGE POWER LINE AND THEIR COUNTERMEASURES[J].Power System Technology,2004,28(22):44-47. |
| |
| Authors: | ZHENG Tao ZHANG Bao-hui |
| |
| Abstract: | Low voltage power line communication has two main application fields, one is automatic meter reading system using power line carrier and the other is high speed connection with Internet. According to the channel characteristics of power line and different requirements to low-speed and high-speed transmission of informations, the authors proposed that the Time Division-Spread Spectrum (TD-CDMA) is suitable for remote meter reading system with low data transmission rate, but special attention should be paid to the selection of proper carrier frequency and the pseudo-random sequence in the spread spectrum, the Orthogonal Frequency Division Multiplexing (OFDM) is suitable for high speed connection with Internet in order to weaken the effects of power line on transmitted signal, such as high noise level and strong attenuation, etc. |
| |
| Keywords: | Power line communication Spread Spectrum Orthogonal Frequency Division Multiplexing (OFDM) Low voltage network |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
