Results 31 to 40 of about 14,576 (267)

CREATING THE RT-32 RADIO TELESCOPE ON THE BASIC OF MARK-4B ANTENNA SYSTEM. 1. MODERNIZATION PROJECT AND FIRST RESULTS

Radio Physics and Radio Astronomy, 2019
Purpose: Creating a radio telescope based on the MARK-4B antenna system being developed for telecommunication applications, determining the possibilities of using the broadband multirange operation of a beam wave-guided antenna system and to evaluate ...
O. M. Ulyanov, O. M. Reznichenko, V. V. Zakharenko, A. V. Antyufeyev, A. M. Korolev, O. M. Patoka, V. I. Prisiazhnii, A. V. Poichalo, V. V. Voityuk, V. N. Mamarev, V. V. Ozhinskii, V. P. Vlasenko, V. M. Chmil, V. I. Lebed, M. I. Palamar, A. V. Chaikovskii, Yu. V. Pasternak, M. A. Strembitskii, M. P. Natarov, S. O. Steshenko, V. V. Glamazdyn, A. S. Shubny, A. A. Kirilenko, D. Y. Kulik, A. A. Konovalenko, L. M. Lytvynenko, Ya. S. Yatskiv   +26 more
doaj   +1 more source

ADVANCED RADIO RESOURCE MANAGEMENT FOR MULTI ANTENNA PACKET RADIO SYSTEMS

International Journal of Wireless & Mobile Networks, 2010
In this paper, we propose fairness-oriented packet scheduling (PS) schemes with power-efficient control mechanism for future packet radio systems. In general, the radio resource management functionality plays an important role in new OFDMA based networks.
Nonchev, Stanislav, Valkama, Mikko
openaire   +2 more sources

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Rework the Radio Link Budget for 5G and Beyond

IEEE Access, 2020
The 5th generation of mobile communication system (5G) enables the use of millimeter wave frequency bands and beamforming with narrow-beam directional antennas for mobile communication.
Kamil Bechta, Jinfeng Du, Marcin Rybakowski   +2 more
doaj   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

A Method for Performance Enhancement for Aeronautical Telemetry Radio Link Using Alamouti Code [PDF]

فصلنامه علوم و فناوری فضایی, 2011
In the most aeronautical telemetry systems, at least two antennas are used to transmit radio signals towards receiver antenna. It is due to effect of large metallic fuselage of air vehicles in cutoff radio link between transmitter and receiver antenna ...
Sh. Marzban, K. Mohamed-Pour
doaj  

Radio/Antenna Mounting System for Wireless Networking under Row-Crop Agriculture Conditions

Journal of Sensor and Actuator Networks, 2015
Interest in and deployment of wireless monitoring systems is increasing in many diverse environments, including row-crop agricultural fields. While many studies have been undertaken to evaluate various aspects of wireless monitoring and networking, such ...
Daniel K. Fisher
doaj   +1 more source

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley   +1 more source

AMELIORATE OF BANDWIDTH AND RETURN LOSS OF RECTANGULAR PATCH ANTENNA USING METAMATERIAL STRUCTURE FOR RFID TECHNOLOGY [PDF]

Journal of Engineering Science and Technology, 2016
Radio Frequency Identification is an emerging research topic to identify any object automatically and it has applications in many fields like manufacture industry, business, animal tracking, vehicle tracking etc.
RAJESH SAHA, SANTANU MAITY
doaj  

Research on discharge spark safety of equivalent receiving antenna of underground metal structure

Gong-kuang zidonghua, 2021
The metal structures distributed in underground coal mine roadways can be equivalent to the receiving antenna to absorb electromagnetic wave energy and release the energy in the form of discharge sparks under specific conditions.
LIU Xiaoyang1, MA Xinyan1, TIAN Zijian1, CHEN Wei2, WANG Shuai1, HU Zongqun1   +5 more
doaj   +1 more source