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Abstract

To be able to transmit information at high bit rate in a domestic or industrial installation, it is planned to receive information at high bit rate sent by a remote sender unit to a specialized receiver. This specialized receiver playing the role of a network master is then provided with means to transmit this information by a carrier current channel made on the electrical network of the installation. In reception, a coupler is used to pick up this information from the electrical network. It is shown that, by acting in this way, it is possible to remove the need to make a specific infrastructure for this transmission at high bit rate, and that it is thus possible to enjoy the facility of having tapping points at all places since an electrical power supply network is generally distributed extensively in a building. Furthermore, several characteristics of modulation and transmission are chosen to withstand parasites and defects of transmission inherent in this type of network. It is shown, especially, that the characteristics chosen for this occasion may also be used in a different context. In particular, it is planned that a time equalization of the channel, which is costly, is not done systematically in a sender unit and a receiver but only in one or the other, and that, furthermore, this channel time equalization can concern only certain frequencies of a total spectrum sent, namely those frequencies for which the signal-to-noise ratio is good whereas, for the others, the efficiency of the equalizer is lower.

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First Claim