Demian Lekomtcev

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This article discusses two standards operating on principles of cognitive radio in television white space (TV WS) frequencies 802.22and 802.11af. The comparative analysis of these systems will be presented and the similarities as well as the differences among these two perspective standards will be discussed from the point of view of physical (PHY), medium(More)
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(More)
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(More)
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