Method for transmitting information over an alternating current power line through a plurality of frequency orthogonal subchannels
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United States of America Patent
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Jun 19, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1998
filing date -
Dec 17, 1998
priority date (Note) -
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Abstract
One embodiment of the present invention is a method for transmitting information over an AC power line. A frequency channel for transmitting the information is selected and divided into a plurality of frequency orthogonal subchannels. Each of the frequency orthogonal subchannels is tested to determine a value of a transmission characteristic, which in turn is used to determine a transmission bit density for the frequency orthogonal subchannel. The information is divided into a plurality of data subblocks. Each data subblock corresponds to one of the frequency orthogonal subchannels, and the size of each data subblock is determined based on the corresponding transmission bit density. The data of each data subblock is modulated for transmission through the corresponding frequency orthogonal subchannel. Each data subblock is transmitted approximately concurrently through the corresponding frequency orthogonal subchannel.
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