This paper presents the design an study of a DSRC/sub-6 GHz Koch fractal antenna single, two and four elements integrated with metamaterial structures, are proposed for C-V2X IEEE 802.11p/V2X. The automotive is challenging task due to degradation MIMO performance because mutual coupling cause spectral regrowth. Initially, single exhibits very good at 5.9 GHz. Subsequently, were designed analyzed which placed orthogonally corner substrate introducing diversity polarization. Meanwhile,...

ABSTRACT Recently, many fundamental technologies have emerged to boost and improve the performance of existing future wireless communication systems, one these being utilization intelligent reflecting surfaces (IRS). This work investigates channel estimation spectral efficiency (SE) a Massive multiple‐input multiple‐output (M‐MIMO) system based on an IRS for spatially correlated channels. The system's is evaluated in terms both SE, utilizing minimum mean square error (MMSE) estimator....

Abstract Channel estimation (CE) and spectral efficiency (SE) are two processes that have a major influence on system performance, especially in more practical channel scenario with spatially correlated Rayleigh fading. During this work, we address the uplink phase CE process SE for fading cell‐free (CF) massive multiple‐input multiple‐output (M‐MIMO) network conventional M‐MIMO operating under time‐division duplex protocol. Since channels fading; thereby, work addresses both networks using...

Nowadays, millimeter-wave frequencies present a catchy solution to securing the colossal data rate needed for 5G communications. Accordingly, this research deals with conception of novel orthogonal 2×2 multiple input, output (MIMO) antenna design operating in millimeter wave spectrum quite small dimensions 11×6×0.8 mm 3 . The single element consists trapezoidal microstrip patch built on Rogers RT5880 laminate permittivity 2.2 and tangent loss 0.0009. A trapezoidal-slot ground plane is used...

This paper presents an ultra-wideband implantable antenna designed for brain-machine interface, covering the industrial, scientific, and medical (ISM) band from 2.4 to 2.48 GHz. The antenna, integrated into a phantom evaluate coupling effects, is constructed using substrate of Rogers 3006, superstrate composed same material featuring thicknesses 0.13 mm 0.25 mm, respectively. These materials exhibit advantageous dielectric characteristics, such as flexibility, conformable structure,...

A small filtering patch Antenna is presented in this work, it consists of a bandpass filter integrated with monopole radiating antenna. Utilizing Defected Microstrip and Ground Structures (DMS,DGS), slot implemented both the ground. The made up half-wavelength dual-stub resonators. This filtenna (filtering-antenna) designed for WLAN applications, operates 5.15-5.35 GHz frequency range, 5.22 resonant frequency.The structure on compact size 34.8 × 27.08 1.6 mm³ equivalent to...

This work provides a straightforward channel estimator to overcome an unrealistic property provided by Minimum Mean Square Error Estimator (MMSEE) for Multi-Cell (MC) Massive Multiple-Input Multiple-Output (M-MIMO) systems operating under Time-Division Duplex (TDD) protocol. Besides, this is in purpose study and analyze the current ideal Least-Squares (LSE), MMSEE, Maximum Likelihood (MLE) various circumstances considering Pilot Contamination (PC) problems. compared evaluate performance of...

In this manuscript a novel design and analysis of multi-band antenna array for the prospective 5G mobile handset was proposed. The proposed is designed on Rogers RT5880 substrate with thickness 0.8 mm permittivity 2.2 over all dimensions 5 × 6 mm3 to operate at 24.25GHz, 26GHz 28 GHz which under consideration wireless communications. linear phased constituted by ten elements printed top side smartphone PCB. obtained results show that has good gain, suitable efficiency, beam steering...

This study presents a new fractal antenna design for multiband applications, which is made by applying Giuseppe Peano and Sierpinski carpet to the basic microstrip patch antenna. The applied edges while created inside area. deposited on 1.6-thick FR4 epoxy substrate with dielectric constant of 4.4. proposed using High-Frequency Structure Simulator (HFSS). According simulation results, resonates At seven resonant frequencies namely, 2.02 GHz (-24.43), 3.51 (-16.46 dB), 3.88 (-18.64 6.59...

In this paper a phased array antenna is devised at millimeter wave frequency bands for 5G smartphone applications. The proposed microstrip patch operating 28GHz. printed on RTRogers5880 substrate with thickness of 0.787 mm and 60×100 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> overall dimension. Ten elements are the top edge substrate. designed using HFSS software, simulated results show good performances in terms S-parameters, gain...

This work deal with the uplink phase of pilot-based channel estimation (CE) process for a Massive multiple-input multiple-output (M-MIMO) network operating under time-division duplex protocol and considering spatially correlated channels. Additionally, this investigates examines uncorrelated channels CC. In addition, channels's spatial correlation is investigated using two models, namely, local scattering model (LSM) exponential (ECM), where each examined array configurations (i.e., uniform...

This research work is devoted to propose and investigate a new millimeter wave antenna array in the 28 GHz band for fifth generation (5G) of mobile communication systems. For this purpose, modified patch with double U-shaped etched slots presented employed high gain 5G array. The suggested composed two radiating elements excited by microstrip feed line placed on RTRogers 5880 laminate. An attractive performance noted where proposed combines most required features including small size...

Flexible implantable antennas have got much attention in the field of biotelemetry applications. So, a circularly polarized compact size wideband antenna for applications biomedical telemetry is presented this research work. The proposed design being operated ISM (industrial scientific, and medical) band at 5.8 GHz medical consists discrete ground circular patch CPW (coplanar waveguide) fed radiating printed on Polyimide substrate. overall <tex>$5\times 3\times 0.15\text{mm}^{3}$</tex>....