Browsing by Author "Özdemir, Mehmet Kemal"
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5G and beyond networks
Ruiz, Silvia; Ahmadi, Hamed; Gardašević, Gordana; Haddad, Yoram; Katzis, Konstantinos; Grazioso, Paolo; Petrini, Valeria; Reichman, Arie; Özdemir, Mehmet Kemal; Velez, Fernando; Paulo, Rui; Fortes, Sergio; Correia, Luis M.; Rouzbehani, Behnam; Barahman, Mojgan; Deruyck, Margot; Mignardi, Silvia; Nasr, Karim; Zhang, Haibin (Elsevier, 2021)This chapter investigates the Network Layer aspects that will characterize the merger of the cellular paradigm and the IoT architectures, in the context of the evolution towards 5G-and-beyond, including some promising ... -
Combined network analysis and molecular dynamics simulations study for characterization of prevalent somatic mutations in breast cancer: Sf3b1 case study
Mahmoud, A. S. M. (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)Breast cancer has the highest incidence and mortality rates among women. The etiology of the disease has remained elusive because of complex interactions among various factors. The somatic mutations are one of such factors ... -
Detection, identification, and direction of arrival estimation of drone FHSS signals with uniform linear antenna array
Kaplan, Batuhan; Kahraman, İbrahim; Ekti, Ali Rıza; Yarkan, Serhan; Görçin, Ali; Özdemir, Mehmet Kemal; Çırpan, Hakan Ali (IEEE - Institute of Electrical and Electronics Engineers, Inc, 2021)Safety, security, and privacy are three critical concerns affiliated with the use of drones in everyday life. Considering their ever-shrinking sizes and capabilities, being aware of drone activities in the vicinity becomes ... -
Extended reduced-rank joint estimation of direction of arrival with mutual coupling for coherent signals
Thet, Nann Win Moe; Kachroo, Amit; Özdemir, Mehmet Kemal (Wiley Blackwell, 2019)This paper proposes an extended method for direction-of-arrival (DOA) estimation with unknown mutual coupling for coherent signals. The proposed method employs the forward/backward spatial smoothing to decorrelate the ... -
FM band channel measurements and modelling
Ahmadin, Omar Mohamed Mohamed Ibrahim (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2018)As the demand for higher data rates increases every day, the need for new frequency bands becomes more and more prominent. The FM band between 88 and 108 MHz is one of the bands that are not fully utilized. This band for ... -
Fm channel model development and its emulator
Mohammed, Ahmed Hossam; Özdemir, Mehmet Kemal (Institute of Electrical and Electronics Engineers Inc., 2018)With the widespread availability of Internet, voice only broadcast in the FM Band will soon be abandoned as Internet Radio can provide the same content with no boundaries. The available band can then be exploited for ... -
Identification of the number of wireless channel taps using deep neural networks
Jaradat, Ahmad M.; Elgammal, Khaled Walid; Özdemir, Mehmet Kemal; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2021)In wireless communication systems, identifying the number of channel taps offers an enhanced estimation of the channel impulse response (CIR). In this work, efficient identification of the number of wireless channel taps ... -
Impact of mutual coupling on power-domain non-orthogonal multiple access (NOMA)
Thet, Nann Win Moe; Khan, Sana; Arvas, Ercüment; Özdemir, Mehmet Kemal (IEEE-Institute of Electrical and Electronics Engineers Inc, 2020)This paper investigates the impact of mutual coupling (MC) on the achievable sum-rate of power-domain non-orthogonal multiple access (NOMA) system in both uplink (UL) and downlink (DL) transmissions. We assume a single-antenna ... -
In silico analysis of a highly mutated gene in cancer provides insight into abnormal mRNA splicing: Splicing factor 3B subunit 1k700e mutant
Samy, Asmaa; Süzek, Barış Ethem; Özdemir, Mehmet Kemal; Şensoy, Özge (MDPI AG, 2020)Cancer is the second leading cause of death worldwide. The etiology of the disease has remained elusive, but mutations causing aberrant RNA splicing have been considered one of the significant factors in various cancer ... -
Joint overlap ratios and power allocation with user fairness in partial non-orthogonal multiple access (P-NOMA)
Thet, Nann Win Moe; Özdemir, Mehmet Kemal (Institute of Electrical and Electronics Engineers Inc., 2020)In power-domain non-orthogonal multiple access (NOMA), since many users are able to utilize a single frequency subcarrier with different power levels, user interference occurs if successive interference cancellation (SIC) ... -
Low-complexity deep learning-based beamforming in MISO systems
Thet, Nann Win Moe; Elgammal, Khaled Walid; Ateş, Hasan Fehmi; Özdemir, Mehmet Kemal (Institute of Electrical and Electronics Engineers Inc., 2021)This study proposes a low-complexity deep learning-based beamforming neural network (BFNN) for massive multiple-input single-output (MISO) systems. We adopt an unsupervised learning-based convolutional neural network (CNN) ... -
Mutual coupling compensation in arrays and its implementation on software defined radios
Khan, Sana (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Mutual coupling in antenna arrays is a classical problem that has been researched for sev eral decades. This thesis presents two different algorithms along with their experimental verification by developing two different ... -
Mutual coupling compensation in receiving antenna arrays
Khan, Sana; Sajjad, Hassan; Özdemir, Mehmet Kemal; Arvas, Ercüment (Institute of Electrical and Electronics Engineers Inc., 2020)Mutual coupling compensation in uniform linear and circular receiving antenna arrays of thin wire dipoles is presented. It was observed that the mutual impedance is independent of the incident angle and depends solely on ... -
Mutual coupling compensation in receiving antenna arrays
Khan, Sana; Sajjad, Hassan; Özdemir, Mehmet Kemal; Arvas, Ercüment (Applied Computational Electromagnetics Society (ACES), 2020)Mutual coupling compensation in uniform linear and circular receiving antenna arrays of thin wire dipoles is presented. It was observed that the mutual impedance is independent of the incident angle and depends solely on ... -
Mutual coupling compensation in receiving arrays and its implementation on software defined radios
Khan, Sana; Sajjad, Hassan; Özdemir, Mehmet Kemal; Arvas, Ercüment (Institute of Electrical and Electronics Engineers Inc., 2020)Mutual coupling is compensated in a four element uniform linear receiving array using software defined radios. Direction of arrival (DoA) is estimated in real-time for the array with spacing d=lambda/4. The decoupling ... -
Mutual coupling compensation in receiving arrays and its implementation on software defined radios
Khan, Sana; Sajjad, Hassan; Özdemir, Mehmet Kemal; Arvas, Ercüment (Applied Computational Electromagnetics Society, 2020)Mutual coupling is compensated in a four element uniform linear receiving array using software defined radios. Direction of arrival (DoA) is estimated in real-time for the array with spacing d=lambda/4. The decoupling ... -
Mutual coupling compensation in transmitting arrays of thin wire antennas
Khan, Sana; Sajjad, Hassan; Özdemir, Mehmet Kemal; Arvas, Ercüment (Applied Computational Electromagnetics Society (ACES), 2018)This paper presents a numerical technique for the compensation of mutual coupling in transmitting arrays of thin wire antennas. The Method of Moments is used to compute the scattering parameters of the array. Using these ... -
A novel sea communication topology and IP routing algorithm by using LTE and WMN in NS-3
Kasım, Rashad; Özdemir, Mehmet Kemal (Wiley, 2017)This paper proposes a new heterogeneous network topology and a routing algorithm for a marine communication system involving ships and other marine vessels from a terrestrial point on the shore. Topology involves the use ... -
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 ...
