Browsing Mühendislik ve Doğa Bilimleri Fakültesi by Author "Çelebi, Mehmet Ertuğrul"
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IEEE 802.15.4a Based Ultra Wideband Systems for Coexistence with Primary Users
Fındıklı, Çağlar; Erküçük, Serhat; Çelebi, Mehmet Ertuğrul (IEEE, 2015)Peaceful coexistence is a major implementation issue for both cognitive radios and ultra wideband (UWB) systems. Accordingly the UWB impulse radio (UWB-IR) based Wireless Personal Area Network (WPAN) standard IEEE 802.15.4a ... -
Performance of IEEE 802.15.4a Systems in the Presence of Narrowband Interference
Fındıklı, Çağlar; Erküçük, Serhat; Çelebi, Mehmet Ertuğrul (IEEE, 2011)The regulatory agencies in Europe and Japan require the implementation of avoidance techniques in some bands to reduce interference to licensed systems. Accordingly ultra-wideband impulse radio (UWB-IR) based Wireless ... -
Space time coded OFDM system with transmit and receive antenna selection
In this paper antenna selection both at the transmitter and the receiver is proposed for space-time coded (STC) orthogonal frequency division multiplexing (OFDM) systems. Antennas for all-subcarriers or per-subcarrier are ...