نبذة مختصرة : application/pdf ; In the construction of a home information system, an electric power distribution line is attracted special interest for the data transmission line. Advantages of the power distribution line are reasonably universal coverage and easy access via a standard wall plug. But as the data transmission line, its disadvantages are 1) limited communication bandwidth and signal voltage level, 2) relatively high levels of electric noise and impedance fluctuations, and so on. On the other hand, the spread spectrum communication has some remarkable features against the electric noise and the interference. Therefore, the spread spectrum communication is expected to apply the data transmission technique for the home information system passing through the power distributed line. This paper describes on an experimental system for analog signals transmission which is applied some ideas of the spread spectrum communication via the power distribution line. In conclusion, from results of the transmission test using its system, we found that the suppressed clock pulse duration modulation technique is useful for the primary modulation in the case of analog signal transmission over the power distribution line applying the spread spectrum communication technique. ; departmental bulletin paper
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