METHOD OF COMBINED APPLICATION OF FRACTIONALLY-SPACED PREEQUALIZATION AND SPREAD-SPECTRUM MODULATION FOR PLC-NETWORKS AND WIRELESS CHANNELS

Abstract


In the article a method of signal processing on the transmitter side is described, utilizing jointly fractionally-spaced equalization and spread-spectrum modulation. Thus two crucial problems of digital signal reliable transmission over the distorting channel with narrowband noise are solved: fractionally-spaced preequalization compensates for intersymbol interference caused by signal dis-tortion, and spread spectrum allows transmission system to be robust against electromagnetic interference. Method efficiency in the sense of error probability and transmit power minimizing is considered.

Full Text

МЕТОД СОВМЕСТНОГО ПРИМЕНЕНИЯ ДРОБНО-ИНТЕРВАЛЬНОЙ ПРЕДВАРИТЕЛЬНОЙ КОРРЕКЦИИ И РАСШИРЕНИЯ СПЕКТРА ЦИФРОВОГО СИГНАЛА ДЛЯ PLC-СЕТЕЙ И БЕСПРОВОДНЫХ КАНАЛОВ СВЯЗИ

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