Spectral Capacity in Cognitive Networks

Abstract

The requirement for dominant data rate is rising since the multimedia operations are being famous; this requires elevated data rate and quality of service. Cognitive radio has lately been recommended as a valuable sample to resolve the spectrum’s lack in contemporary communication networks. The metric performances of cognitive radio networks, detection and efficient spectrum use are mandatory. Therefore, several techniques and methods are proposed by different forums and specialized researchers for a main challenge to quantify the sum of spectral efficiency of cognitive radio systems. Our study aims to optimize the overall spectral capacity of the system, which implies an optimization of the spectral efficiency sum of cognitive networks. This document shows the effects of a comparative research between communications of our orthogonal model by competition, and another communication of a simple orthogonal model between secondary users in terms of capacity in a spectrum pooling pattern. By permitting users to have access to the novel spectral ranges without giving up the license owners’ quality of service. Our results of analyzes and simulations highlight and prove the potentials of our orthogonal approach by competition. The latter has allowed us to increase the spectral capacity of the secondary users as well as the spectral efficiency of the network; these two factors play an essential and major role in the improvement of quality of service.