Cognitive Radio Enabled Telemedicine System

Appropriate pre-hospital-diagnostic, consultative and therapeutic facilities are important to improve deteriorating health conditions of patients especially those in transit such as an accident victim or a patient who had chest pain and being transported to a hospital. Telemedicine systems provide such timely facilities. We propose here a telemedicine platform architecture consisting of three tiers. The first tier made up of body sensors connected to a gateway and the communication technology used in this tier is UWB. The third tier of the architecture is the communication link between the mobile vehicle and the hospital, which is a cognitive radio enabled communications system. A cognitive radio controller chooses a free spectrum that can provide a reliable communication link for a secondary user. The cognitive radio controller and the gateway integrated together forms the second tier of the architecture. The UWB based sensors on the first tier are capable of improved performance with negligible impact of interference. The performance metrics of the cognitive radio is given in term of region of convergence. Results verify that the proposed light-weight combination strategy can improve free spectrum detection performance significantly under both urban and suburban environment.