Browsing Bildiri Koleksiyonu by ORCID "0000-0001-9474-7372"
Now showing items 21-40 of 114
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Deep learning-based optimal ris interaction exploiting previously sampled channel correlations
Aygül, Mehmet Ali; Nazzal, Mahmoud; Arslan, Hüseyin (IEEE - Institute of Electrical and Electronics Engineers, Inc, 2021)The reconfigurable intelligent surface (RIS) technology has attracted interest due to its promising coverage and spectral efficiency features. However, some challenges need to be addressed to realize this technology in ... -
Deep RL-based spectrum occupancy prediction exploiting time and frequency correlations
Aygül, Mehmet Ali; Nazzal, Mahmoud; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2022)In cognitive radio systems, predicting spectrum occupancies is a convenient alternative way to continuous spectrum sensing. It can provide information on spectrum usage and so empty spectrum bands can be used by secondary ... -
Dictionary learning-based beamspace channel estimation in millimeter-wave massive mimo systems with a lens antenna array
Nazzal, Mahmoud; Aygül, Mehmet Ali; Görçin, Ali; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2019)Recent research considers the application of a lens antenna array in order to provide efficient beam selection in beamspace massive MIMO. Achieving the advantages of this beam selection paradigm requires efficient channel ... -
Discrete fourier transform spread zero word OFDM
Nemati, Mahyar; Takshi, Hengameh; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2017)Fifth generation (5G) waveform must meet a superior performance in multipath channels along with low peak to average power ratio (PAPR), especially in up-link transmission. Among waveform candidates, zero tail (ZT) DFT-spread ... -
A distributed user-cell association for spectral and energy efficiency tradeoff in massive MIMO UDHNs
Çetinkaya, Şinasi; Arslan, Hüseyin (IEEE-Institute of Electrical and Electronics Engineers, 2019)Massive MIMO enabled ultra-dense heterogeneous networks (UDHNs) have been considered as the indispensable and emerging approach to meet the demand on growing data traffic for next generation networks. Although deployment ... -
Dynamic utilization of low-Altitude platforms in aerial heterogeneous cellular networks
Helmy, Mostafa; Ankaralı, Zekeriyya Esat; Siala, Mohamed; Baykaş, Tunçer; Arslan, Hüseyin (IEEE, 2017)Aerial telecommunication platforms provide a promising solution to meet surging traffic demands as a component of future communication networks. They can be used as aerial base stations (ABSs) to build an aerial heterogeneous ... -
Dynamic-structure resource block allocation based scheduling for 5G systems
Jaradat, Ahmad Mohammad; Sağlam, Mehmet İzzet; Kartal, Mesut; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2022)We propose an efficient radio resource scheduling (RRS) approach based on the existing dynamic resource block structure (D-RBS). The proposed RRS is more responsive to variations in traffic demand. More specifically, ... -
Efficient power allocation for cognitive radio NOMA using game-theoretic based pricing strategy
Abidrabbu, Shaima’ S.; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2021)Cognitive radio-based non-orthogonal multiple access (CR-NOMA) is considered to be one of the promising multiple accessing technique candidates for 5G and beyond networks. These networks are facing a lot of challenges to ... -
Efficient power allocation for MIMO CR-NOMA networks
Abidrabbu, Shaima; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2021)Cognitive radio-based non-orthogonal multiple access (CR-NOMA) is considered to be one of the promising multiple accessing technique candidates for 5G and beyond networks. These networks are facing a lot of challenges to ... -
Efficient spectral access in distributed cooperative cognitive radio networks
Tayyab Shah, Syed M.; Hamood, Moqbel A.; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2021)The cognitive users (CUs) in the cooperative communication may serve as relay nodes for conveying the signal received from the primary users (PUs) to their destinations, provided that both the PUs and the CUs minimum rate ... -
Energy and spectral efficiency tradeoff in NOMA: Multi-objective evolutionary approaches
Çetinkaya, Şinasi; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2020)Non-orthogonal multiple access (NOMA) deployment in future wireless networks has been recently considered a promising radio access technology to enhance spectral efficiency (SE). However, gain in SE comes always with the ... -
Energy-efficient resource allocation for 5G cognitive radio NOMA using game theory
Abidrabbu, Shaima' S.; Arslan, Hüseyin (IEEE - Institute of Electrical and Electronics Engineers, Inc, 2021)Cognitive radio non-orthogonal multiple access (CR-NOMA) networks promise improved spectrum utilization and capacity in 5G networks. In this work, we aim to investigate efficient power allocation for the secondary users ... -
Enhancing physical layer security of OFDM systems using channel shortening
Furqan, Haji Muhammad; Hamamreh, Jehad M.; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2017)This work presents a simple, spectral and power efficient scheme for providing secure OFDM communication system using channel shortening. The basic concept is to utilize a channel shortening technique, whose design is based ... -
Enhancing physical-layer security in wireless communications using signal space diversity
Yusuf, Marwan; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2016)In this paper, we enhance the security of OFDM systems in frequency selective fading channels using signal space diversity. In rich multipath environments, spatially separated channels are independent to each other. Hence, ... -
Estimating multi-dimensional sparsity level for spectrum sensing
Aygül, Mehmet Ali; Nazzal, Mahmoud; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2023)Identifying spectrum opportunities is a crucial element of efficient spectrum utilization for future wireless networks. Spectrum sensing offers a convenient means for revealing such opportunities. Studies showed that usage ... -
Estimation and exploitation of multidimensional sparsity for MIMO-OFDM channel estimation
Nazzal, Mahmoud; Aygül, Mehmet Ali; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2022)Obtaining accurate channel state estimates at reasonable training overheads remains a big challenge for the applicability of multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM). Recently, ... -
The evaluation of FFR for interference management in coordinated hybrid terrestrial-aerial network
Duranay, Ahmet Enes; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2019)Recent works have tried to incorporate unmanned aerial vehicle (UAV) base stations in conventional networks, however, the inter-cell interference mitigation techniques for such networks have not been studied comprehensively. ... -
Experimental characterization of in vivo radio channel at MICS and ISM Bands
Abdelaziz, Aya; Abbasi, Qammer Hussain; Demir, A. Fatih; Qaraqe, Khalid; Serpedin, Erchin; Arslan, Hüseyin (Electromagnetics Academy, 2015)This paper presents an experimental study for the propagation losses and wave attenuation inside human body for implanted antenna at different body organs. The experimental study discusses the commonly used frequency bands: ... -
Exploiting OTFS frame structure for PAPR reduction
Wireless technologies have always been the cornerstone of industrial progress. However, as industrial technologies have improved and advanced services have emerged, the demands of industry have meant that wireless technologies ... -
A flexible hybrid waveform
Nemati, Mahyar; Takshi, Hengameh; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers Inc., 2017)Cellular systems of fifth generation (5G) require a waveform with flexible guard interval length along with a low power consumption. Different cyclic prefix (CP) durations in long term evolution (LTE) result in loss of ...
