Yazar "Çırpan, Hakan Ali" için listeleme
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Centralized and decentralized ml-enabled integrated terrestrial and non-terrestrial networks
Non-terrestrial networks (NTNs) are a critical enabler of the persistent connectivity vision of sixth-generation networks, as they can service areas where terrestrial infrastructure falls short. However, the integration ... -
Deep multi-task learning-based simultaneous channel tap and coefficient estimation
Wireless communication systems depend on accurate channel estimation to ensure efficient and reliable data transmission. The channel estimation process consists of two essential steps: channel tap and coefficient estimation. ... -
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 ... -
Enablers for efficient wi-fi sensing
Wireless fidelity (Wi-Fi) technology gained popularity due to its ability to provide reliable connectivity, enabling high-speed communication and information sharing. However, in recent years, the focus has shifted from ... -
Identification of distorted RF components via deep multi-task learning
Aygül, Mehmet Ali; Memişoğlu, Ebubekir; Çırpan, Hakan Ali; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2022)High-quality radio frequency (RF) components are imperative for efficient wireless communication. However, these components can degrade over time and need to be identified so that either they can be replaced or their effects ... -
Intelligent spectrum occupancy prediction for realistic measurements: GRU based approach
Tusha, Armed; Kaplan, Batuhan; Çırpan, Hakan Ali; Qaraqe, Khalid; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2022)Cognitive radio (CR) technology has always been a research hotspot in the wireless communications field as it has the potential to significantly improve system capacity at the cost of increased processing time and power ... -
Measurement based statistical channel characterization of air-to-ground path loss model at 446MHz for narrow-band signals in low altitude UAVs
Ede, Burak; Yarkan, Serhan; Ekti, Ali Rıza; Baykaş, Tunçer; Çırpan, Hakan Ali; Görçin, Ali (IEEE-Institute of Electrical and Electronics Engineers Inc, 2020)Powered by the advances in microelectronics technologies, unmanned aerial vehicles (UAVs) provide a vast variety of services ranging from surveillance to delivery in both military and civilian domains. It is clear that a ... -
Quasisynchronous LoRa for LEO nanosatellite communications
Uysal, Hasan Gökhan; Yılmaz, Ferkan; Çırpan, Hakan Ali; Kucur, Oğuz; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2023)Perfect synchronization in LoRa communications between Low Earth Orbit (LEO) satellites and ground base stations is still challenging, despite the potential use of atomic clocks in LEO satellites, which offer high precision. ... -
Time-frequency warped waveforms for well-contained massive machine type communications
İbrahim, Mostafa; Arslan, Hüseyin; Çırpan, Hakan Ali; Ekin, Sabit (IEEE-Institute of Electrical and Electronics Engineers Inc., 2023)This paper proposes a novel time-frequency warped waveform for short symbols, massive machine-type communication (mMTC), and internet of things (IoT) applications. The waveform is composed of asymmetric raised cosine (RC) ...