V.M. Artyushenko - Dr. Sc. (Eng.), Professor, Head of Department, Financial and Technological Academy (Korolyov, Moscow region) E-mail: artuschenko@mail.ru T.S. Abbasova - Ph. D. (Eng.), Associate Professor, Financial and Technological Academy (Korolyov, Moscow region) E-mail: abbasova_univer@mail.ru

The article concidered problem of designing advanced broadband mobile networks CDMA, which use new methods of designing the structure of the network. Currently, the design of mobile networks focused mainly on solving problems of radio, which include the selection of the location of the cells, frequency planning, designing antennas, electromagnetic compatibility issues and others. It is not always taken into account the characteristics of the distribution of the load characteristic of the teletraffic. Analyzed features of the CDMA with channel division, which do not allow direct use of transmitter power and receiver sensitivity of mobile and base stations to calculate the communication range of the cellular network. When designing a broadband mobile communication CDMA necessary to consider load distribution characteristics specific to Teletraffic. It is shown that the location of users and their distribution in space should be considered when designing a CDMA-network coverage and cell capacity should be planned so that the power management would be consistent with a certain quality of service. As a measure of network performance is used blocking probability signal. An analytical expression for determining the blocking probability due to cell CDMA-network. The probability function lock signal is used to determine the maximum number of users that can be admitted into the network without exceeding the maximum blocking probability. Determined graphic-analytical functions for probability of blackout from the distance between user and the base station, for probability of blackout from the number of users in the cell, the error probability from distance between the user and the BS and from the number of users in the cell.

 

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