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This paper investigates the evaluation of a spectrum sensing techniques from the point of view of detection degradation caused by the transceiver front-end imperfections. Two spectrum sensing detectors (an energy detector and a goodness of fit detector) have been evaluated with the selected single carrier modulation formats for four different types of front-ends — two of them designed for the currently...
This paper investigates the evaluation of a spectrum sensing technique from the point of view of detection degradation caused by the real receiver front-end imperfections. Two spectrum sensing detectors (energy detector and goodness of fit — based detector) have been tested with various modulation formats for four different types of front-ends in form of daughter-boards for widely used radio device...
This paper presents the verification of the developed MATLAB-based simulator for cooperative spectrum sensing using four different real channel conditions set up between the primary and individual secondary users. Indoor-indoor, indoor-outdoor, outdoor-indoor and outdoor-outdoor are taken into consideration. In the transmitter side two types of signals are generated — the analogue FM signal and the...
This paper presents the developed MATLAB-based simulation environment used to evaluate the cooperative spectrum sensing in the simulated channel conditions. Four different channel models can be set up between the primary user and individual secondary users: PedA, PedB, VehA and VehB models. Two types of detectors - the energy detector and the Kolmogorov-Smirnov-based statistical detector have been...
The cognitive radio technology allows solving one of the main issues of current wireless communication technologies, namely a deficit of vacant spectrum. A dynamic spectrum access used in the cognitive radio networks (CRN) gives an ability to access to an unused spectrum in real time. Cooperative spectrum sensing is the most effective method for spectrum holes detecting. It combines sensing information...
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