Title :
Spread spectrum transmission on residential power line
Author :
Marubayashi, Gen ; Tachikawa, Shin´ichi
Author_Institution :
Fac. of Eng., Soka Univ., Tokyo, Japan
Abstract :
Spread spectrum data transmission on residential electric power lines is investigated. As a fundamental problem transmission characteristics of a residential power line has been studied. First, the active impedance characteristics of various electric apparatus used in the ordinary customers house are measured and simulated by lumped constant impedance. Configurations of the residential power line network are statistically studied next. A novel approach to construct an artificial transmission line of the residential electric power line using these results is shown. Various noise arising from electric apparatus used in the residence are measured and classified according to its amplitude, time duration and time intervals statistically. Besides these, several experimental spread spectrum data transmission systems are constructed and trial tests are carried out. Several novel techniques such as, spread time spread spectrum system to suppress impulsive noise, system using a reference PN signal to cope with sudden change of the transmission line characteristic, parallel combinatory spread spectrum system to improve spectral efficiency are tested in the trial test. Some of the experimental results are shown
Keywords :
carrier transmission on power lines; data communication; distribution networks; domestic appliances; electric impedance measurement; power system measurement; spread spectrum communication; active impedance characteristics measurement; artificial transmission line; electric apparatus; impulsive noise suppression; lumped constant impedance; parallel combinatory spread spectrum system; reference PN signal; residential electric power line; residential power line; spectral efficiency improvement; spread spectrum data transmission; spread spectrum transmission; spread time spread spectrum system; time duration; time intervals; Data communication; Electric variables measurement; Impedance measurement; Noise level; Noise measurement; Power transmission lines; Spread spectrum communication; System testing; Time measurement; Transmission line measurements;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563472