Distributed QoS Constraint based Resource Adaptation Strategy for Cognitive Radio Networks

Joint Resource Allocation for OFDMA based Overlay Cognitive Radio Networks under Stochastic Rate Constraint

This work presents joint subcarrier, power and bit allocation schemes for multi-user OFDM based overlay cognitive radio under constraints on primary user throughput loss and total secondary user transmitted power. Closed form for expressions for the optimal power and bit allocations are initially derived. Subsequently, optimal and suboptimal algorithms to realise the joint subcarrier, power and...

Resource Allocation for Cognitive Radio Networks Report2

Resource Allocation for Cognitive Radio Networks Report

QoS based Spectrum Selection Scheme in Cognitive Radio Networks

The demand for the wireless spectrum has been increased with the increase in usage of multimedia applications. The available spectrum can be efficiently used with the help of cognitive radio technology. In this paper, spectrum selection techniques in the case of cognitive radio networks are studied. Channel sharing and channel contention problems arise when multiple secondary users tend to sele...

A Fuzzy-based Routing Strategy for Multihop Cognitive Radio Networks

Cognitive radio networks represent a new class of wireless networks where the channels are not permanently available, depending on the traffic activity of licensed users who have the priority to use these channels. We design a novel routing procedure for multihop cognitive radio networks composed of adequate metrics and a strategy to combine these metrics. The objective is then to increase chan...