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  • 1.
    Chakraborty, Joyraj
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
    J.V.K.C., Varma
    Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
    Erman, Maria
    Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
    ANFIS based Opportunistic power control for cognitive radio in spectrum sharing2013Conference paper (Refereed)
    Abstract [en]

    Cognitive radio is an intelligent technology that helps in resolving the issue of spectrum scarcity. In a spectrum sharing network, where secondary user can communicate simultaneously along with the primary user in the same frequency band, one of the challenges is to obtain balance between two conflicting goals that are to minimize the interference to the primary users and to improve the performance of the secondary user. In our paper we have considered a primary link and a secondary link (cognitive link) in a fading channel. To improve the performance of the secondary user by maintaining the Quality of Service (Qos) to the primary user, we considered varying the transmit power of the cognitive user. For this we proposed ANFIS based opportunistic power control strategy with primary user's SNR and primary user's interference channel gain as inputs. By using fuzzy inference system, Qos of primary user is adhered and there is no need of complex feedback channel from primary receiver. The simulation results of the proposed strategy shows better performance than the one without power control.

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