Antenna system

This study explores the problem of maximizing the sum rate in uplink multi-user Multiple-Input Multiple-Output (MIMO) using Rate-Splitting Multiple Access (RSMA) systems. The investigation revolves around the scenario where the Users (UEs) are singleantenna nodes transmitting data to a multi-antenna Base Station (BS) through the RSMA technique.

8p vialicene 02-07-2024 0 0   Download

Part 1 book "Low visibility antennas for communication systems" includes content: Electromagnetic theory and transmission lines, basic antenna theory, low visibility printed antennas, antenna array.

123p dianmotminh03 17-06-2024 0 0   Download

Part 2 book "Low visibility antennas for communication systems" includes content: Applications of low visibility printed antennas, wearable antennas for communication and medical applications, wearable tunable printed antennas for medical applications, new wideband wearable meta material antennas for communication applications, fractal printed antennas, microwave and MM wave technologies, radio frequency measurements.

168p dianmotminh03 17-06-2024 0 0   Download

Part 2 book "Smart building systems for architects, owners and builders" includes content: Fire alarm and mass notification systems; voice networks and distributed antenna systems; data networks; facility management systems; design, construction, and renovations; the economics of smart buildings; audio visual systems; network integration, energy and sustainability; case studies.

129p dianmotminh00 17-04-2024 3 3   Download

Ebook "Energy transfer dynamics in biomaterial systems (Springer series in chemical physics, Volume 93)" summarizes recent progress in this direction, focusing on the role of quantum dynamical phenomena in biological and nanostructured systems. The book grew out of a workshop that was held in October 2007 in Paris on the topic of “Energy flow dynamics in biomaterial systems”.

479p manmanthanhla0201 26-02-2024 5 1   Download

This paper proposes a dual-band PIFA antenna operated at 28/38 GHz for 5G communication systems. The PIFA antenna consists of two dielectric layers and an air gap is inserted between these two layers. Both substrates, namely Roger RT dielectric, have a relative dielectric constant of 2.2 and a thickness of 0.127 mm.

9p vibego 02-02-2024 1 0   Download

Part 2 book "Principles of electronic communication systems" includes content: Fundamentals of networking, local area networks, and ethernet; transmission lines; antennas and wave propagation; internet technologies; microwave and millimeter wave communication; satellite communication; telecommunication systems; optical communication; cell phone technologies; wireless technologies; communication tests and measurements.

497p muasambanhan06 03-02-2024 7 2   Download

Part 2 book "Principles of electronic communication systems" includes content: Digital data transmission; fundamentals of networking, local area networks, and ethernet; transmission lines; antennas and wave propagation; internet technologies; microwave and millimeter wave communication; satellite communication; telecommunication systems; optical communication; cell phone technologies; wireless technologies; communication tests and measurements.

557p muasambanhan06 03-02-2024 2 1   Download

Ebook "Introduction to communication electronic warfare systems" includes content: Communication electronic warfare systems, electromagnetic signal propagation, noise and interference, radio communication technologies, system engineering, electronic support, electronic attack, antennas, receivers, signal processing, direction finding position fixing techniques, hyperbolic position fixing techniques, exciters and power amplifiers,... and other contents.

285p haojiubujain07 20-09-2023 10 3   Download

Part 1 of ebook "Modern radar systems" provides readers with contents including: the radar and its ground environment; usual and unusual concepts; transmitters; microwave waveguide and transmission line system; antennas; factors outside the radar - propagation, scattering, and clutter; receivers; matched and matching filters;...

349p tieulangtran 28-09-2023 5 3   Download

Continued part 1, part 2 of ebook "Introduction to radar systems" provides readers with contents including: radar antennas; the electronicaljy steered phased array antenna in radar; receivers, displays, and duplexers; detection or radar signals in noise; extraction of information and waveform design;...

359p tieulangtran 28-09-2023 5 3   Download

Part 2 book "MIMO-OFDM wireless communications with Matlab R" includes content: PAPR reduction, inter cell interference mitigation techniques, MIMO - channel capacity, antenna diversity and space time coding techniques, signal detection for spatially multiplexed MIMO systems, exploiting channel state information at the transmitter side, multi user MIMO.

231p oursky02 07-08-2023 7 5   Download

Millimeter-wave wireless communications systems are proving many advantages in comparison to systems operating at the lower frequency band thanks to their wide bandwidth, ability to provide high-speed and multimedia services. This paper proposes a millimeter-wave multi-antenna system for the estimation of DOA of radio signal in the azimuth plane operating at 28 GHz.

9p viwolverine 11-07-2023 4 4   Download

This paper proposes an efficient beamformer based on the binary bat algorithm for uniform rectangular arrays of half-wavelength dipoles. The proposed beamformer utilizes the technique of controlling only the amplitude of excitation weights to produce optimal patterns with minimal distortions in sidelobe regions while maintaining the main beam and imposing nulls in the directions of interfering signals.

5p vifalcon 18-05-2023 8 4   Download

To achieve effective power delivery in space, this paper proposes an efficient beamformer that can focus energy on the direction of the desired people and minimize energy in the direction of undesired people (interferences).

6p vifalcon 16-05-2023 3 2   Download

This thesis presents a study of impedance optimisation of active microstrip patch antennas to multiple frequency points. A single layered aperture coupled microstrip patch antenna has been optimised to match the source reflection coefficient of a transistor in designing an active antenna. The active aperture coupled microstrip patch antenna was optimised to satisfy Global Positioning System (GPS) frequency specifications.

137p runthenight05 01-03-2023 6 2   Download

This work investigates the robust beamforming for a multi-antenna internet of things (IoT) system using wireless information and power transmission (WIPT), given that imperfect channel state information (CSI) assumption is accounted. In particular, we investigate the problem of maximizing the worst-case energy harvested, taking into account the quality of service (QoS) constraint of user rate.

6p viargus 20-02-2023 6 3   Download

The aim of this thesis is investigate and design a small antenna which can be embedded onto a Polyethylene substrate (used for making roof tiles). The antenna can be used to harvest ambient energy by connecting it to a rectifier. Due to the dimensional constraints of a roof tile as well as the materials used, there are limitations imposed on the antenna size, and thus the radiation efficiency and bandwidth often become a limiting factor in the overall performance of the system.

93p runthenight04 02-02-2023 9 1   Download

In this paper, we investigate the physical layer secrecy performance of multiple-input multiple-output (MIMO) system with transmission antenna selection (TAS) and receiver maximal-ratio combining (MRC) in the presence of a single antenna passive eavesdropper over dissimilar fading channels.

5p vijaguar 16-11-2022 9 1   Download

In this paper, we present a low-cost compact Radio Frequency Identification (RFID) tag antenna for the toll collection system in the ultra-high frequency (UHF) bands. The antenna is a printed dipole antenna, which is built on the top-side of a low-cost FR-4 substrate (εr = 4.4 and a thickness of 0.8 mm).

4p vispyker 16-11-2022 11 2   Download