Erişim şekli için "info:eu-repo/semantics/embargoedAccess" Bildiri Koleksiyonu listeleme
Toplam kayıt 126, listelenen: 21-40
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Cyclic Prefix (CP) jamming against eavesdropping relays in OFDM systems
(IEEE-Institute of Electrical and Electronics Engineers Inc., 2022)Cooperative communication has been widely used to provide spatial diversity benefits for low-end user equipments, especially in ad hoc and wireless sensor networks. However, the lack of strong authentication mechanisms in ... -
Deep learning-assisted detection of PUE and jamming attacks in cognitive radio systems
(Institute of Electrical and Electronics Engineers Inc., 2020)Cognitive radio (CR)-based internet of things systems can be considered as an efficient solution for futuristic smart technologies. However, CRs are naturally vulnerable to two major security threats; primary user emulation ... -
Deep RL-based spectrum occupancy prediction exploiting time and frequency correlations
(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 ... -
Design and implementation of an X-band passive RFID tag
(Institute of Electrical and Electronics Engineers Inc., 2020)This paper presents a novel fully integrated energy harvester, multi-stage RF-DC rectifier, mode selector, RC oscillator, LC oscillator, and X-band power amplifier implemented in IBM 0.18-µm RF CMOS technology. We investigated ... -
Design of high-frequency broadband CMUT arrays
(Institute of Electrical and Electronics Engineers, 2015)In this work we demonstrate a high-frequency (29-MHz) broadband (100% FBW) CMUT 1D array. The devices are fabricated using anodic bonding with only three photolithography steps. We also discuss the design guidelines for ... -
Dictionary learning-based beamspace channel estimation in millimeter-wave massive mimo systems with a lens antenna array
(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
(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
(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 ... -
Dual band (28/38 GHz) antenna design for 5G mmWave communication networks
(Institute of Electrical and Electronics Engineers Inc., 2023)The goal of the 5G millimeter-wave (mmWave) technology is to outperform the earlier wireless technology generations in terms of data throughput, latency, and connection reliability. It has the potential to revolutionize ... -
Dual camera based high spatio-temporal resolution video generation for wide area surveillance
(Institute of Electrical and Electronics Engineers Inc., 2022)Wide area surveillance (WAS) requires high spatiotemporal resolution (HSTR) video for better precision. As an alternative to expensive WAS systems, low-cost hybrid imaging systems can be used. This paper presents the usage ... -
Dynamic range and depth of field extension using camera array
(Institute of Electrical and Electronics Engineers Inc., 2022)Computational imaging aims to extend the capabilities of conventional imaging systems by extracting richer and more meaningful information through multiple captures or by modifying the camera’s sensors and optics. In ... -
Dynamic utilization of low-Altitude platforms in aerial heterogeneous cellular networks
(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
(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
(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
(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
(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
(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 aware wireless system based software defined radio
(Institute of Electrical and Electronics Engineers Inc., 2019)Development of green telecommunication systems is already being considered highly attractive by standard bodies and recently is attracting research attention. While most of the research focuses on modeling and simulation, ... -
Enhancing physical-layer security in wireless communications using signal space diversity
(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, ... -
Enhancing the security performance of ostbc using pre-equalicodization
(Institute of Electrical and Electronics Engineers Inc., 2017)In this study, we first quantify the secrecy performance achieved by employing precoded orthogonal space time block coding (POSTBC) in order to use it as a benchmark for comparison purposes with a new proposed security ...