System and method for data communication over power lines
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United States of America Patent
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Jul 26, 2011
Grant Date -
Jul 6, 2006
app pub date -
Oct 11, 2005
filing date -
Apr 8, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method for broadband communications over power lines has a low-voltage transformer for the house connection unit and/or the electricity distribution inside the house. The system method allow for several parallel asynchronous data communications in different sub-channels with individual transmit power in each sub-channel. Sub-channel separation uses pass-band filters with high stop-band attenuation. High data rate in each sub-channel is achieved through the use of discrete wavelet multi-tone modulation. Coarse synchronization in each sub-channel and the optimization of the coefficients of the time-domain equalizer are carried out using a training sequence.
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