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Generation of OAM Radio Waves with Three Polarizations Using Circular Horn Antenna Array
Published 2015-01-01“…This paper provides an effective solution of generating OAM-carrying radio beams with all three polarizations: the linear, the left-hand circular, and the right-hand circular polarizations. …”
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42
Improved Energy Detector with Weights for Primary User Status Changes in Cognitive Radio Networks
Published 2014-03-01“…This paper presents an improved energy detector (ED) with weights to improve detection performance in this situation that the primary user's status changes as arriving or leaving randomly in cognitive radio networks. …”
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43
Optimization of a Conical Corrugated Antenna Using Multiobjective Heuristics for Radio-Astronomy Applications
Published 2016-01-01“…This paper presents the design of a tree sections corrugated horn antenna with a modified linear profile, using NURBS, suitable for radio-astronomy applications. …”
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44
A Novel L-Shape Ultra Wideband Chipless Radio-Frequency Identification Tag
Published 2017-01-01“…A novel compact dual-polarized-spectral-signature-based chipless radio-frequency identification (RFID) tag is presented. …”
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45
Fractional-Order Active Disturbance Rejection Controller Design for Large Radio Telescope Antenna
Published 2022-01-01“…large radio telescope antennas are required in current astronomical research and deep space communication applications. …”
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46
Markov Model-Based Energy Efficiency Spectrum Sensing in Cognitive Radio Sensor Networks
Published 2016-01-01“…Cognitive Radio Sensor Network (CRSN), incorporating cognitive radio capability in wireless sensor networks, is a new paradigm of the next-generation sensor network. …”
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47
Path Loss Channel Model for Inland River Radio Propagation at 1.4 GHz
Published 2017-01-01Get full text
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48
Innovative approach for modelling gravity-induced signal path variations of VLBI radio telescopes
Published 2025-01-01“…Abstract Gravitationally induced deformation of the receiving unit of radio telescopes used for Very Long Baseline Interferometry (VLBI) distorts the observations and biases the deduced products. …”
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49
X-Ray/Radio Quasiperiodic Pulsations Associated with Plasmoids in Solar Flare Current Sheets
Published 2025-01-01“…Here, we present direct imaging of the formation and ejection of multiple plasmoids in flare plasma/current sheets and the associated quasiperiodic pulsations (QPPs) observed at X-ray and radio wavelengths, using observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly, RHESSI, and the Fermi Gamma-ray Burst Monitor. …”
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50
A Deep Q-Learning Algorithm With Guaranteed Convergence for Distributed and Uncoordinated Operation of Cognitive Radios
Published 2025-01-01“…This challenge is illustrated by presenting a simulation result where the use of a standard single-agent deep reinforcement learning approach does not achieve convergence because of being applied in the uncoordinated interacting multi-radio scenario. …”
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51
Frequency-Based Optimization Design for Fractional Delay FIR Filters with Software-Defined Radio Applications
Published 2010-01-01“…A frequency-designed fractional delay FIR structure, which is suitable for software radio applications, is presented. The design method is based on frequency optimization of a combination of modified Farrow and mutirate structures. …”
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Radio Detection of UHE Cosmic Rays and Neutrinos off the Moon with Two 30 m Telescopes
Published 2024-12-01“…In order to improve the detectability of the UHE particles, we proposed an experiment to carry out the radio observations of the UHE cosmic rays and neutrinos with two 30 m telescopes for a far longer time than the present experiments. …”
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REAL-TIME KERNEL FUNCTION SYNTHESIS FOR SOFTWAREDEFINED RADIO AND PHASE-FREQUENCY MEASURING DIGITAL SYSTEMS
Published 2018-12-01“…They also may be used for software-defined radio devices, including pure digital implementation of an input radio-frequency signal. …”
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55
A Bayesian Compressive Sensing Vehicular Location Method Based on Three-Dimensional Radio Frequency
Published 2014-06-01“…For this reason, an assistant approach has been presented in this paper by using three-dimensional radio frequency, such as time of arrival (TOA) and direction of arrival (DOA). …”
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56
Delay of Near-relativistic Electrons with Respect to Type III Radio Bursts throughout the Inner Heliosphere
Published 2025-01-01“…In this study, we examine energetic electron onsets and type III radio bursts observed by the Integrated Science Investigation of the Sun (IS⊙IS) and the FIELDS Radio Frequency Spectrometer instrument on Parker Solar Probe at a variety of heliocentric distances. …”
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57
A New X-Ray and Radio Burst Activity from the Magnetar SGR 1935+2154
Published 2025-01-01“…The source was active again in 2021 September and 2022 January, but without emitting radio bursts. In 2022 October, the magnetar entered a new activity that included radio bursts, three of them reported to be associated with X-ray bursts. …”
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Shaping Outflows and Jets by Ambient Pressure: A Unified Framework
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Cooperative Communication in Cognitive Radio Networks under Asymmetric Information: A Contract-Theory Based Approach
Published 2015-10-01“…This paper establishes a valuable cooperative communication mechanism in cognitive radio networks.…”
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