• BUSINESS

    THE DEVELOPMENT OF THE TELECOMMUNICATIONS MARKET IN BULGARIA

    Science. Business. Society., Vol. 1 (2016), Issue 4, pg(s) 31-32

    ICT is a very dynamic sector, developing at a rapid pace in the recent years. The development of technology enhances the ability of the operators to provide new and better services, at constant price reduction of the services. Nevertheless, the total volume of the electronic communications market in 2014 constituted 3.1% of the total GDP (Gross domestic product) of Bulgaria.

    In the state there is a steady trend of increasing the share of the mobile services compared to the fixed services. Mobile voice services have a leading role in the development of the electronic communications market. With the development of broadband technology, although at a slower pace is increasing the penetration of the fixed broadband access. Services for data and / or internet access are on third place by importance in the telecommunications market.

  • SCIENCE

    MECHANISMS FOR MEASURING OUTPUT POWER AND POWER SPECTRAL DENSITY OF A TRANSMITTER IN A WIMAX RADIO NETWORK

    Science. Business. Society., Vol. 1 (2016), Issue 3, pg(s) 15-17

    The report examines current problem in wireless WiMAX networks, namely the possible ways and mechanisms to measure the output power and power spectral density of radio transmitter. The purpose of measurement is to determine the maximum output power of the transmitter is within the manufacturer’s declared value with a certain tolerance set by EN / ETS and does not exceed the maximum limits. Also to measure or calculate the power spectral density of radiated power in the frequency channel with a specific width. The following parameters must be measured in full and coordinated load of the transmitter. These are the key parameters needed to research for the effective design of broadband WiMAX wireless data system.