Başlık için Elektrik - Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering listeleme
Toplam kayıt 92, listelenen: 63-82
-
OFDM with hybrid number and Index modulation
(IEEE Access, 2020)A novel transmission scheme is introduced for efficient data transmission by conveying additional information bits through jointly changing the index and number of active subcarriers within each orthogonal frequency division ... -
OFDM-subcarrier power modulation with two dimensional signal constellations
(2019 Innovations in Intelligent Systems and Applications Conference (ASYU), 2019)An original modulation technique has been recently proposed for wireless communication systems known as OFDM- SPM (OFDM with Subcarrier Power Modulation). This technique utilizes a characteristic of the subcarriers of the ... -
On the performance of MIMO-ANM with joint adaptive transmit antenna selection and maximum ratio combination in future 6G networks
(RS Open Journal on Innovative Communication Technologies, 2022)Multiple Input Multiple Output with Antenna Number Modulation (MIMO-ANM) has recently been introduced to the literature as an effective, competitive, and reliable transmission technology that can make the selection of ... -
Optimization of hydrothermal synthesis of Ce3+ co-doped NaYF4, Yb3+, Er3+upconversion nanoparticles and investigation of their size, morphology, and phase transitions.
(ICENS, 2019)In this study, the synthesis of water-soluble polyethyleneimine (PEI) modified UCNPs which were prepared by a hydrothermal method have been reported. The resultant UCNPs were small size and hexagonal β-phase structure ... -
An organic-based hybrid hydrogels: its preperation method, structural investigation, and lanthanum uptake
(International AEGEAN Conferences on Natural & Medical Sciences-VI, 2022)Rare earth elements (REEs) have been found broad applications in superconductive materials, catalysts, magnetics, hydrogen storage materials, and rechargeable batteries. By integrating REEs into different fields, their ... -
Orthogonal frequency division multiplexing with subcarrier gap modulation
(IEEE 31st PIMRC'20 - Workshop on Waveform Design for Beyond 5G Communications, 2020)A new modulation scheme called orthogonal frequency division multiplexing with subcarrier gap modulation (OFDM-SGM) is proposed. The proposed scheme embeds extra information bits by exploiting the gap between the active ... -
Orthogonal frequency division multiplexing with subcarrier power modulation for doubling the spectral efficiency of 6G and beyond networks
(Transactions on Emerging Telecommunications Technologies, 2020)With the emergence of new applications (eg, extended reality [XR] and haptics), which require to be simultaneously served not just with low latency and sufficient reliability, but also with high spectral efficiency, future ... -
Passively Q-switched Cr:LiCAF laser with a saturable Bragg reflector
(Applied Physics B: Lasers and Optics, 2021)We present a low-cost multimode diode pumped passively Q-switched Cr:LiCAF laser operating near 800 nm. AlGaAs-based saturable Bragg reflectors (SBRs) were used for passive Q-switching. The system is experimentally ... -
pH-responsive carboxymethyl cellulose conjugated superparamagnetic iron oxide nanocarriers
(Journal of Scientific Perspectives, 2019)In the present study, polyethyleneimine (PEI) coated superparamagnetic iron oxide nanoparticles (SPIONs) having the size of 15 nm in diameter with high magnetic saturation (60 emu/g) have been prepared by co-precipitation ... -
Photocatalytic degradation of bodipy dye with a shungite based PVA hydrogel under UV-light irradiation
(Proceedings of Academics World International Conference, 2022)The contamination of water with dyes is a critical problem for the environment and a great deal of research is invested to produce the novel adsorbent composites with high adsorption capacity and at the same time gaining ... -
Physical layer security against eavesdropping in the internet of drones (IoD) based communication systems
(2019)rones or unmanned aerial vehicles (UAVs) communication technology, which has recently been thoroughly studied and adopted by 3GPP standard (Release 15) due to its dynamic, flexible, and flying nature, is expected to be ... -
Physical layer security for NOMA: requirements, merits, challenges, and recommendations
(2019)Non-orthogonal multiple access (NOMA) has been recognized as one of the most significant enabling technologies for future wireless systems due to its eminent spectral efficiency, its ability to provide an additional ... -
Precoded universal MIMO superposition transmission for achieving optimal coverage and high throughput in 6G and beyond networks
(Balkan Journal of Electrical and Computer Engineering, 2023)A wireless network can utilize its entire resources to serve users without any allocation and provide upgraded performances such as enhanced throughput and high reliability without interference among users. However, previous ... -
Protecting IMSI from fake base stations exploitation and spoofers impersonation in 5G and beyond cellular networks
(2022)Fifth-generation (5G) mobile networks require authenticated and fully secured transmissions between user devices and 5G base stations (gNodeB). In the current 5G technology standard, mobile devices cannot distinguish ... -
Secure and reliable IoT communications using nonorthogonal signals’ superposition with dual-transmission
(IEEE 31st PIMRC'20 - Workshop on 5G Mobile Communication System for Smart Factories, 2020)Ensuring secure communication for internet of things (IoT) has drawn much attention because of the lim itation in the use of conventional cryptographic techniques owing to the unique features of IoT devices such as ... -
Security in UAV/Drone communications
(CRC Press, 2019)This chapter highlights the latest advances and state-of-the-art research attempts performed towards applying physical layer security (PLS) to unmanned aerial vehicle (UAV) communication systems. It discusses some of the ... -
Shungite/Poly(vinyl alcohol) hybrid hydrogels: An efficient adsorption material for rare earth metals in aqueous media
(Wiley, 2023)Rare earth elements play a pivotal role in modern technologies, therebydriving an escalating demand for their procurement. To effectively extractthese elements from aqueous solutions, it is imperative to explore innovativesorbent ... -
Signal space diversity for improving the reliability performance of OFDM with subcarrier power modulation
(RS Open Journal on Innovative Communication Technologies, 2021)As the demand for higher data rates continues to increase exponentially, there is a shift towards exploring contemporary techniques that are likely to offer higher spectral efficiency. A new modulation technique termed as ... -
Sodium-Alginate based composite films for effective removal of congo red and coralene dark red 2B dyes: kinetic, isotherm and thermodynamic analysis
(MDPI, 2023)The present study aimed to investigate the adsorption capacity of two anionic dyes, namely, Congored (CR) and Coralene Dark Red2B (DR), onto prepared alginate (Alg) and chitosan(Cs) biopolymer films. The two biopolymers ... -
A spectrally efficient OFDM-based modulation scheme for future wireless systems
(2019 Scientific Meeting on Electrical-Electronics and Biomedical Engineering and Computer Science, EBBT 2019, 2019)A novel modulation technique termed as orthogonal frequency division multiplexing with subcarrier power modulation (OFDM-SPM) for efficient data transmission in wireless communication systems is proposed. OFDM-SPM uses the ...