Detection and evaluation of the number of activated abonent station

Abstract

While solving the spatio-temporal access problems of abonent stations in the modern wireless broadband telecommunication systems it is necessary, as an ad-vanced procedure, to solve the problem of detecting of the abonent station applica-tion to get the necessary channel resource for communication and further evaluation of the number of such stations. This provides an efficient distribution of spatio-temporal resource, formed by multibeam array used at the system base station. Among different methods of detecting of abonent stations applications, the most constructive is based on the analysis of the spectrum of proper values of selective co-variance matrix, which contains all necessary information for the moment of forma-tion of sample about signals and noise, involved in the creation of a spectrum. The article focuses on the procedures of detecting and evaluation of the active abonent stations in different conditions of signal jamming environment. The modernization of parameters of selective covariance matrix is suggested for the unbalanced signal and noise recept. Solutions to this problem are given in relation to a particular signal-jamming environment, and conditions of operation of wireless broadband communication systems differ by a considerable level of prior uncertainty regarding the useful signals as well as operating noise. An optimization procedure that helps to equalize adaptively the value of the noise components levels, that makes the examined situation typical, was suggested.