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


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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.

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