FIELD: electricity.
SUBSTANCE: method is related to signal transmission through channel of power line where OFDM signal is modulated by set of subcarrier frequencies; subcarrier frequencies are divided by frequency division. The above method receives noise signal through channel of power line; determines respective value of noise signal with variety of narrow frequency bands with the first pass band where this pass band is less than frequency division; determines the first band with errors among variety of narrow frequency bands on the basis of respective signal values and cuts signal in the first frequency band with error before transmission of the above signal. There is also respective modem for data transmission through power line.
EFFECT: capacity improvement.
20 cl, 11 dwg
