| 数字脉冲间隔调制(DPIM)线性扩谱通信及应用 |
| |
| 引用本文： | 姜孝华,张湛梅.数字脉冲间隔调制(DPIM)线性扩谱通信及应用[J].科技通报,2004,20(1):55-58. |
| |
| 作者姓名： | 姜孝华 张湛梅 |
| |
| 作者单位： | 中山大学电子系,广州,510275 |
| |
| 基金项目： | 广东省教育厅《软件技术》重点实验室研究基金资助项目 |
| |
| 摘 要： | 研究了一种扩谱载波数字脉冲间隔调制SSC—DPIM(Spread spectrum carrier digital pulse interval modulation)技术并用于电力线载波扩谱通信系统．采用线性扫频SSC扩谱载波对DPIM符号进行编码，引入脉冲前导码作为传输数据块的同步信号以防止差错传播．介绍了数据传输速率及数据块传送差错率的理论分析结果．并采用单片机实现了SSC-DPIM电力线载波通信系统．实验结果表明，在同样的电力线网络环境下，其通信效果明显优于已有的电力线载波通信系统。
|
| 关 键 词： | 电力线载波通信系统 线性扩谱通信 数字脉冲间隔调制 DPIM 扩谱载波 |
| 文章编号： | 1001-7119(2004)01-0055-04 |
| 修稿时间： | 2002年9月23日 |
A Communication System Using the Spread Spectrum Carrier DPIM Technique |
| |
| JIANG Xiao-hua,ZHANG Zhan-mei.A Communication System Using the Spread Spectrum Carrier DPIM Technique[J].Bulletin of Science and Technology,2004,20(1):55-58. |
| |
| Authors: | JIANG Xiao-hua ZHANG Zhan-mei |
| |
| Abstract: | Digital Pulse Interval Modulation (DPIM) is a pulse-interval modulation technique and a modified form of PPM which has been shown to be suitable for deployment in optical-wireless-communication systems.A spread spectrum digital pulse interval modulation (SSC-DPIM) communication strategy for power-line communication is investigated , where the DPIM symbols are encoded using a swept frequency carrier coupled to the power line and a preamble DPIM frame with a fixed interval is used to mitigate the data error propagation. The presence of the frequency swept carrier on the PL will represent the presence of a DPIM pulse, and the absence of the carrier will represent the spacing state of the SSC-DPIM frame. The theoretical analysis about the data transmission rate and the data block error rate are studied. The SSC-DPIM system is implemented by a single-chip micro-processor and has been applied successfully in a train fault information system based on power-line communications. The experiment results show that the SSC-DPIM system has an advantage over the most established power-line communication techniques in bit data error rate in the presence of a high signal attenuation and strong complicated noise. |
| |
| Keywords: | electronic and communication system PPM PLC SSC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
