Power distribution line communication system for and method of reducing effects of signal cancellation
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United States of America Patent
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Feb 9, 1993
Grant Date -
N/A
app pub date -
Jul 12, 1991
filing date -
Jul 12, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A power distribution line communication system for, and method of, reducing effects of signal cancellation at locations along the distribution line due to standing waves caused by reflections of a carrier signal impressed on the distribution line. A same outgoing data signal is modulated on each of a plurality of carrier signals having different frequencies. The carrier signal frequencies are selected such that all of the carrier signals will not experience signal cancellation at a same location on the distribution line. The modulated carrier signals are simultaneously impressed on the distribution line for transmission to remote locations, thereby ensuring reception of the outgoing data signal at each remote location.
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