Narytnyk T.M.

Construction Features of City Data Transmission Network Based on the MITRIS Technology

This paper presents possibilities of constructing the city data transmission networks on the microwave integrated multimedia systems of a multiservice radio access (MITRIS technology) basis using the cable standard DOCSIS modems. We describe and propose parameters of the system and its constituents: base station, repeaters, secondary concentrators, and the user's station. Also, we consider the competitiveness and specifics of implementing the data transmission city networks based on the MITRIS technology in the range of frequencies 10,15–10,30 and 10,50–10,65 GHz.

The Research of Possibility of Signal Transmission by the COFDM Radio-Relay Line

We demonstrate the results of theoretical and experimental research at the transmission of the COFDM signal on a radio-relay line with the use of the “Evrika equipment” in the range of frequencies 12,75–13,25 GHZ. We also study the influence of nonlinear distortions in a passing block on the spectrum of outgoing signal at the change of the entrance power level. We elaborate the chart of conducting the measuring of nonlinear channel distortions of transmission of the radio-relay station.