Constructing Radio Environment Map Model for a Cognitive Communication System Based on LTE

Abstract

The telecommunication systems actual development direction is the use of cognitive radio technology and dynamic spectrum access to solve the spectrum scarcity problem. Storage and processing of spatiotemporal data should be carried out using a radio environment map (REM). A two-level REM generation model for the LTE system and an algorithm for implementing the model are presented. A method for calculating REM at a grid node is shown, taking into account losses during signal propagation. The software implementation of the model was made using the MatLab package. Approaches to increasing the speed of its operation are described. The results of the REM generation software implementation algorithm are demonstrated, which confirm the correctness of the developed model.