Optimal Spectrum Utilization Deploying Cognitive Radio Techniques For Wireless Sensor Networks
Wireless Sensor Networks (WSNs) that deploy cognitive techniques in a Cognitive Radio Network have a lot of
advantages. This paper presents the concepts of Wireless Sensor Networks deploying cognitive radio techniques to give rise
to Cognitive Wireless Sensor Networks which help in greatly increasing spectrum efficiency. The advantages of CWSNs,
challenges in their deployments and solutions to overcome those challenges are discussed. Wireless technologies such as the
Bluetooth and Wi-Fi use the ISM band (which is used by WSNs) causing overcrowding that ultimately leads to degradation
of WSNs performance. Cognitive technologies help in finding new spectrum and access to already existing ones with better
characteristics. Dynamic adjustment of system parameters such as modulation and data rates is achievable through CWSNs
which facilitate lower power consumption and higher network lifetime.
Keywords - Cognitive Radios, Dynamic Spectrum, ISM, Nodes, Wireless Sensor Networks.