Distributed Detection in Cognitive Radio Networks: Recent Developments

With the increase of wireless services and devices, and the need to maintain their QoS requirements,
the demand for spectral bandwidth has increased in recent years. The traditional spectrum allocation
techniques have led to inefficient spectrum utilisation. In this project, we analyse a new paradigm
called Dynamic Spectrum Access , using energy detection methods in case of real-valued and
complex-valued signals. An energy efficient detection is also proposed in a distributed cognitive
network for the case of a single SU and N PUs, where N > 1. The cognitive radio network also
has to pay a cost whenever a SU switches a channel. In this scenario, detection algorithms are also
proposed absed on myopic approach.