Yazar "Özdemir, Mehmet Kemal" için listeleme
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Partial-beam non-orthogonal multiple access (PB-NOMA) with fuzzy clustering
Thet, Nann Win Moe; Özdemir, Mehmet Kemal (IEEE-Institute of Electrical and Electronics Engineers Inc., 2021)This letter proposes a partial-beam non-orthogonal multiple access (PB-NOMA) system for millimeter wave (mmWave) channels. In the proposed system, the user terminals (UT)s partially belong to different user groups and ... -
Performance analysis of user scheduling in massive MIMO with fast moving users
Thet, Nann Win Moe; Baykaş, Tuncer; Özdemir, Mehmet Kemal (Institute of Electrical and Electronics Engineers Inc., 2019)This paper analyzes the effect of fast fading Doppler channel on user scheduling algorithms. Considering a millimeter wave (mmWave) downlink massive multiple-input multiple-output (M-MIMO) system, we adopt a two-stage ... -
Ray tracing-based maritime channel analysis for millimeter radiowaves
Mehrnia, Niloofar; Özdemir, Mehmet Kemal (Springer, 2019)In this work, we present and analyze the simulation results of millimeter-wave propagation channel performed over the sea surface for ship to ship scenario. We present a channel characterization study where channel parameters ... -
Reduced-rank joint estimation of DOA with mutual coupling
Thet, Nann Win Moe; Özdemir, Mehmet Kemal; Kachroo, Amit (Institute of Electrical and Electronics Engineers Inc., 2018)In this paper, an extended reduced-rank direction-of-arrival (DOA) estimation with unknown mutual coupling in uniform linear array (ULA) structure is presented. The proposed method is based on the joint iterative subspace ... -
Rf circuit implementation of a real-time frequency spread emulator
Karabacak, Murat; Mohammed, Ahmed Hossam; Özdemir, Mehmet Kemal; Arslan, Hüseyin (IEEE-Institute of Electrical and Electronics Engineers Inc, 2018)Despite their reliability, on-site measurements are time-consuming and costly actions for the evaluation of new devices. Channel emulators are widely utilized measurement instruments to generate desired environmental channel ... -
RSS-based wireless LAN indoor localization and tracking using deep architectures
Karakuşak, Muhammed Zahid; Kıvrak, Hasan; Ateş, Hasan Fehmi; Özdemir, Mehmet Kemal (MDPI, 2022)Wireless Local Area Network (WLAN) positioning is a challenging task indoors due to environmental constraints and the unpredictable behavior of signal propagation, even at a fixed location. The aim of this work is to develop ... -
Signal of opportunity based TDOA positioning using analog TV signals
Elgammal, Khaled Walid; Turan, Berke Can; Bedir, Oğuz; Çelebi, Hasari; Özdemir, Mehmet Kemal (IEEE Computer Society, 2023)The ability to self-localize is an essential requirement for many systems. Mostly, this is accomplished by using a Global Positioning System (GPS) receiver. However, in some situations, the GPS receiver is disabled by ... -
Software implementation of key transceiver algorithms for an in-band full-duplex DVB-S2-based satellite communication system
Elgammal, Khaled Walid (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Nowadays, the demand for satellite bandwidth is boosted driven by the introduction of new areas of applications such as 5G-satellite integration and the internet of things. In-Band Full-Duplex communications, where a ... -
Studying the connection between SF3B1 and four types of cancer by analyzing networks constructed based on published research
Samy, Asmaa; Özdemir, Mehmet Kemal; Alhajj, Reda (Nature Research, 2023)Splicing factor 3B subunit 1 (SF3B1) is the largest component of SF3b protein complex which is involved in the pre-mRNA splicing mechanism. Somatic mutations of SF3B1 were shown to be associated with aberrant splicing, ...