Backpropagation-Based Cooperative Localization of Primary User for Avoiding Hidden-Node Problem in Cognitive Networks by Lin Liu, Zhengyi Li, Chi Zhou

“…Cognitive radio (CR) is a technology to implement opportunistic spectrum sharing to improve the spectrum utilization. …”
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Research on the Power Flux-Density at the Earth’s Surface Produced by Emissions from the Fixed Beam of NGSO Constellation System by Ying HUANG, Chen JIAN, Wei LI, Kang YAN

“…The power fl ux-density is an interference criterion for protecting terrestrial service systems from non-geostationary orbit (NGSO) constellation systems.Based on the defi nition of power fl ux density(PFD), a calculation method on the PFD produced by the emissions from the fi xed beam of NGSO constellation system was given.On the basis of describing the PFD constraint conditions of the NGSO fi xed-satellite service system given by ITU, a method for determining the limits of PFD from the NGSO constellation system was presented.Taking the Starlink system as the typical scenario, the PFD produced by telemetry, tracking, and control (TT＆amp;C) beam of the Starlink system was analyzed.The results showed that the analytical results of the given method were consistent with those of the Starlink system, and the PFD of TT＆amp;C beam in the 18.55-18.6 GHz frequency band exceeded the limit given in radio regulations.Under the current ITU framework, the number of the satellite constellation is a decisive factor for the legal use of the Ka band by NGSO constellation system.…”
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Three-Mode Vortex Wave Generator with Double-Layer Patch Antennas by Jun Hu, Tong-Tong Qiu, Xue Lan, Wei Xu, Song-Song Qian

“…With the development of Multiple-Input Multiple-Output technologies, researches on radio vortex wave with orbital angular momentum have become active. …”
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Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma by Douglas Letsholathebe, Kgakgamatso M. Mphale, Samuel Chimidza

“…There are anecdotal reports of severe line-of-sight (LOS) radio frequency signal degradation on firegrounds. …”
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Hybrid precoding method for millimeter-wave massive MIMO systems based on IAFS algorithm by Haoyi CHEN, Guangqiu LI, Hui LI

“…The millimeter-wave massive multiple-input multiple-output (MIMO) systems can overcome the adverse effects of the free-space signal path loss through the partial connection hybrid precoding method, which has the advantages of low hardware complexity and high energy efficiency.When the number of input data streams is equal to the number of radio frequency (RF) links, the hybrid precoding method based on partially connected structure and serial interference cancellation can be used.When the number of input data streams is not equal to the number of RF links, a hybrid precoding method based on improved artificial fish swarm (IAFS) algorithm was proposed.The core idea is that based on the spectral efficiency optimization criteria and the characteristics of partial connected structure, the spectral efficiency optimization problem of analog recoding matrix variables was transformed into the spectral efficiency optimization problem based on vector variables, and then the IAFS algorithm was used to solve the spectrum efficiency optimization problem.The simulation results show that the proposed method has good spectral efficiency and energy efficiency under the condition of low signal-to-noise ratio, and is expected to be applied in the real scene.…”
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A Novel Decentralized Scheme for Cooperative Compressed Spectrum Sensing in Distributed Networks by Huang Jijun, Zha Song

“…However, the computation overhead incurred by compressed reconstruction is nontrivial, especially in a power-constrained cognitive radio (CR). Moreover, additional information, which is generally unavailable in practice, is needed in conventional CS-based wideband spectrum sensing schemes to improve the reconstruction quality as well as the detection performance. …”
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Promoting HIV/AIDS Prevention through Soap Operas by William Brown, Steven Kiruswa, Steven Kiruswa, Benson P. Fraser Benson P. Fraser

“…In the 1990s, the country of Tanzania broadcast a highly effective radio soap opera to promote HIV/AIDS prevention. …”
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ONLINE VS TRADITIONAL; MARKETING CHALLENGE IN THE TELECOM MARKET IN BOSNIA AND HERZEGOVINA by Tarik Zaimović, Adnan Suturović

“…Social networks are the marketing communication medium preferred by most of the telecomm users in BiH, followed by television, billboards, text messages, company web page, web advertisements, newspapers, e-mail, and the radio. The results presented in this paper consider consumers’ behavior in one of the most dynamic BiH sectors, and provide an insight in the specific media channel of marketing communication. …”
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Lightweight decentralized learning-based automatic modulation classification method by Jie YANG, Biao DONG, Xue FU, Yu WANG, Guan GUI

“…In order to solve the problems in centralized learning, a lightweight decentralized learning-based AMC method was proposed.By the proposed decentralized learning, a global model was trained through local training and model weight sharing, which made full use of the dataset of each communication nodes and avoided the user data leakage.The proposed lightweight network was stacked by a number of different lightweight neural network blocks with a relatively low space complexity and time complexity, and achieved a higher recognition accuracy compared with traditional DL models, which could effectively solve the problems of computing power and storage space limitation of edge devices and high communication overhead in decentralized learning based AMC method.The experimental results show that the classification accuracy of the proposed method is 62.41% based on RadioML.2016.10 A.Compared with centralized learning, the training efficiency is nearly 5 times higher with a slight classification accuracy loss (0.68%).In addition, the experimental results also prove that the deployment of lightweight models can effectively reduce communication overhead in decentralized learning.…”
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Surgical Management of Giant L2 Adrenal Neuroblastoma in Adult Male by Bikash Bikram Thapa, Sanjay Yadav, Sujit Pant, Pratik Rajkarnikar, Pankaj Mandal

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(1→3)-β-D-glucan in patients with pulmonary aspergilloma by Kazumi Yuasa, Hajime Goto

“…Other parameters, such as galactomannan, immunodiffusion and a radio-allergosorbent test, as well as inflammatory m arkers such as C-reactive protein and the leukocyte count, did not show any consistent tendency in regard to the activity of the disease. …”
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Statistical Modeling of Ultrawideband Body-Centric Wireless Channels Considering Room Volume by Miyuki Hirose, Hironobu Yamamoto, Takehiko Kobayashi

“…This paper presents the results of a statistical modeling of onbody ultrawideband (UWB) radio channels for wireless body area network (WBAN) applications. …”
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A QoS Aware Resource Allocation Strategy for 3D A/V Streaming in OFDMA Based Wireless Systems by Young-uk Chung, Yong-Hoon Choi, Suwon Park, Hyukjoon Lee

“…The main limitation of 3D video streaming over a wireless system is the shortage of radio resources due to the large size of the 3D traffic. …”
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Modified Least Squares Algorithm for Three-Dimensional Target Location Based on Wireless Communication Base Stations by Zhaohui Zhang, Jing Li, Qian Liu

“…The observed values of time of arrival (TOA) for the radio signals between the target and the wireless communication base stations are mainly affected by signal non-line-of-sight (NLOS) propagation in target location. …”
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Wireless Coexistence between IEEE 802.11- and IEEE 802.15.4-Based Networks: A Survey by Dong Yang, Youzhi Xu, Mikael Gidlund

“…As more and more wireless devices use the 2.4 GHz radio spectrum, the coexistence of 2.4 GHz wireless devices operating in one place has become a hot topic. …”
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Design and optimization for wireless-powered IRS-aided mobile edge computing system by Dong TANG, Xuwei HUANG, Zhiwei LUO, Sai ZHAO, Gaofei HUANG

“…A new design of intelligent reflecting surface (IRS)-aided mobile edge computing (MEC) system was studied, which consisted of a hybrid access point (HAP) connected with an MEC server, an IRS equipped with radio-frequency (RF) energy harvesting (EH) circuits, and a user side with random task arrival.To reduce energy consumption at the user, a novel protocol was proposed first, in which the system was enabled to select a proper operation mode among an EH mode, an IRS-aided task offloading mode, and an IRS-inactive task offloading mode.Then, based on the proposed protocol, an optimization problem was formulated, which aimed at minimizing the amount of consumed energy at the user by optimizing the selection of system operation mode and the resource allocation in each mode.Lyapunov optimization framework was employed to solve the problem to achieve a low-complexity and efficient optimization algorithm.Simulation results show that the proposed scheme can save 50% to 90% of energy consumption for the MEC system as compared with the existing baseline schemes.…”
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Theory of Periodic Sequence: A Generalized Formalism of Maxwell’s Equations in Discrete Transform Domain by Ben You, Ke Wu

“…The fundamental solutions of EM periodic sequential excitation are elucidated and corroborated by radio-frequency (RF)/microwave measurements. This involves potential applications in the analysis of broadband RF transmission and the design of high-speed RF devices.…”
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A Summary of National Oceanic and Atmospheric Administration Space Weather Prediction Center Proton Event Forecast Performance and Skill by H. M. Bain, R. A. Steenburgh, T. G. Onsager, E. M. Stitely

“…Energetic particles present during these storms impact electrical components on spacecraft, disrupt high frequency radio communications, and pose a radiation risk for passengers and crew on polar flight routes, as well as for astronauts. …”
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Radiation Characteristics of 3D Resonant Cavity Antenna with Grid-Oscillator Integrated Inside by L. A. Haralambiev, H. D. Hristov

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Characterization of aerosol jet printed features at microwave frequencies by Teresa Cheng, Kelvin J. Nicholson

“…Published works exploring AJP with conductive inks are rarely conducted at radio frequencies (RF) and so the utility of AJP in the antenna world has been limited. …”
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