Mehmet Bahadir Celebi

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In this paper, we proposed a cognitive radio (CR) implementation by using standard wireless communication laboratory equipments such as signal generator and spectrum analyzer. Equipments are controlled through MATLAB instrument control toolbox to carry out CR capabilities specified by IEEE 802.22 WRAN standard. Energy detection and maximum minimum(More)
Interference cancellation is expected to have significant importance for next-generation wireless communication systems due to various co-channel deployment scenarios and dense frequency reuse. In this study, an interference cancellation receiver that exploits the unique characteristics of single-carrier frequency-division multiple access based systems is(More)
Detection of primary services is important for the access of unlicensed/secondary services to TV bands in order to increase spectral efficiency. We proposed a weak wireless microphone signal detector based on higher-order spectral (bispectral) analysis. In order to reduce complexity, we estimated the bispectrum through the use of direct method and detection(More)
The increasing number of mobile devices and the demand for large throughput requiring applications has hampered access to the limited frequency spectrum. The goal of this work is to introduce a new degree of freedom to the reuse of occupied resources by intentionally creating co-existence between different types of signals. First, the co-existence of(More)
Kalman filtering (KF) is a form of recursive estimator, which has been widely applied to different applications. This paper discusses a new approach, based on a discrete event process, for tracking of threats (emitters). Pulses of a particular threat from received mixed (raw) pulse sequences of multiple threats corrupted by timing jitter and measurement(More)
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