Spread spectrum data transmission system using the earth returning circuit on a low-voltage distribution line

Author

Ozawa, Yoshitaka ; Arai, Toshio ; Kohno, Ryuji

Author_Institution

Dev. Dept., Toko Electr. Co., Saitama, Japan

Volume

3

fYear

1996

fDate

22-25 Sep 1996

Firstpage

1097

Abstract

This paper proposes and investigates a spread spectrum data transmission system using the earth returning circuit in a low-voltage power distribution line. Transmission characteristics of data signals which are transmitted or injected between the distribution line and the earth by using the earth returning circuit are measured in our experimental distribution line. It is confirmed that there are some advantages such as stable transmission, robustness against noise from customer loads compared with conventional data transmission between the distribution lines. We designed and implemented the FSK/DS spread spectrum modem with 9000 bps transmission rate for the distribution line data. Performance of the spread spectrum modem is measured by using the experimental distribution line. Moreover, the spread spectrum signal´s electromagnetic radiation from the distribution line is investigated to analyze its effect on radio broadcasting and other facilities around the distribution line

Keywords

carrier transmission on power lines; data communication; distribution networks; electromagnetic interference; frequency shift keying; modems; spread spectrum communication; 9000 bit/s; FSK/DS spread spectrum modem; customer loads noise; data signals transmission characteristics; earth returning circuit; electromagnetic radiation; low-voltage distribution line; radio broadcasting; robustness; spread spectrum data transmission; stable transmission; Circuit noise; Data communication; Earth; Electromagnetic measurements; Electromagnetic radiation; Frequency shift keying; Modems; Noise robustness; Power distribution lines; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on

Conference_Location

Mainz

Print_ISBN

0-7803-3567-8

Type

conf

DOI

10.1109/ISSSTA.1996.563475

Filename

563475