Noise uncertainty effect on multi-channel cognitive radio networks

Amira Osama, Heba A.Tag El-Dien, Ahmad A.Aziz El-Banna, Adly S.Tag El-Dien


Achieving high throughput is the most important goal of cognitive radio networks. The main process in cognitive radio is spectrum sensing that targets getting vacant channels. There are many sensing techniques such as matched filter, feature detection, interference temperature and energy detection which is employed in the proposed system; however, energy detection suffers from noise uncertainty. In this paper a study of throughput under noise fluctuation effect is introduced. The work in this paper proposes multi-channel system; the overall multi-channel throughput is studied under noise fluctuation effect. In addition, the performance of the network has been investigated in terms of different number of channels and sensing time under noise uncertainty.


Cognitive radio; Multi-channel; Noise uncertainty; Throughput

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