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Border surveillance has many applications in national security, infrastructure security, habitat monitoring, detecting illegal trespasses, military applications, and so on. This topic has received an increased attention recently. Sensing coverage and reliable data transmission are critical aspects in border surveillance using wireless sensor networks. In this paper we propose RMA-BS, a cognitive radio...
Sensors are widely in use because of low cost and multi functionality. Cognitive radio is nothing but intelligence in some form. Cognitive radio is a form of wireless communication in which a transceiver can detect the availability of channels. Wireless sensor networks are widely being deployed but some of the challenges that arise in wireless sensor network can be overcome by using cognitive radio...
The purpose of this research is to study the existing work in the field of applications of Game Theory in engineering. The project was undertaken to comprehend the basics of Game Theory and then infer how it can be applied to solve practical problems. Initially the nuances of Game Theory were explored through standard texts and then they are followed by four problem statements to study how they can...
In this paper, we address the problem of sensor selection for energy efficient spectrum sensing in multi-band cognitive sensor networks. We formulate the problem of sensor selection in multi-band case in order to minimize energy consumption while satisfying the detection performance constraints. Energy detector is used as a simple detector which can be implemented in practice. Due to NP-hardness of...
Concomitantly with the progress of wireless communications, cognitive radio has attracted attention as a solution for depleted frequency bands. Cognitive radio is suitable for wireless sensor networks because it reduces collisions and thereby achieves energy-efficient communication. To make cognitive radio practical, we propose a low-power multi-resolution spectrum sensing (MRSS) architecture that...
This paper looks into the modeling of information transmission over cognitive interrogator-sensor networks (CISNs), which represent an import class of sensor networks deployed for surveillance, tracking, and imaging applications. The crux of the problem is to develop a channel model that allows for evaluation of the sensing channel capacity and error rate performance, where the sensing link is overlaid...
In recent years, we have seen tremendous growth in the applications of wireless sensor networks (WSN) operating in unlicensed spectrum bands. However, there is evidence that existing unlicensed spectrum is becoming overcrowded. On the other hand, with recent advances in Cognitive Radio (CR) technology, it is possible to apply the Dynamic Spectrum Access (DSA) model in WSN to get access to less congested...
We analyze and compare the performance of two adaptive relaying schemes based on the amplify-and-forward and the decode-and-forward protocols which are employed to improve the performance of collaborative spectrum sensing. As our results show, the proposed schemes allow us to improve the reliability of the communication part of the wireless sensor network. We expect that this in turn will improve...
This paper describes a business case scenario and gives the results of a business case analysis for deployment of a sensor network aided cognitive radio system in a typical European city. The main idea behind the business case is that several spectrum owners will establish a joint venture and this joint venture will get the right to use the “unused” spectrum resources of all the companies in a cognitive...
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