Democratizing the media by Coenie de Villiers

“….: role of the Independent Broad· casting Authority as regulatory body becomes critical as the electronic media and radio In particular struggle through the transitional pains of deregulation, privatization and liberalization. …”
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Improving the Body Area Line-of-Sight Density Model: A Theoretical Study by Xiaodong Yang, Zhiya Zhang, Shuyuan Yang, Qammer Hussain Abbasi, Wei Zhao

“…The statistical model plays an important role in BAN radio propagation characterization. However, a traditional least-square statistical model is not necessarily the best choice when only limited samples can be collected. …”
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A Trust Value-Based Spectrum Allocation Algorithm in CWSNs by Qing-Qi Pei, Zi Li, Li-Chuan Ma

“…With the increase of congestible frequency spectrums and the rapid development of wireless sensor networks (WSNs) applications, the new technology—combing cogitative radio technology with WSNs—called CWSNs will bring broad prospects to the field of radio and sensor networks. …”
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Transponder Designs for Harmonic Radar Applications by Kimmo Rasilainen, Ville V. Viikari

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A survey of deep learning based modulation recognition by Shujun SUN, Shengliang PENG, Yudong YAO, Xi YANG

“…Modulation recognition is one of the fundamental tasks for communications systems, which can be widely applied in various fields, such as cognitive radio, intelligent communications, radio surveillance, electronic warfare, etc.In recent years, deep learning (DL) based modulation recognition has attracted great attention due to its superiority in feature extraction and recognition performance.The techniques of DL based modulation recognition were systematically summarized.Firstly, some knowledge relevant to DL based modulation recognition was introduced.Then, the system architecture, data pre-processing methods, deep neural network structures, prevalent datasets and performance metrics of DL based modulation recognition were illustrated.Finally, the future directions of DL based modulation recognition were also discussed.…”
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Distributed cooperative spectrum sensing based on consensus optimization by ZENG Fan-zi, LIU Jie, LI Ren-fa, ZENG Qing-guang

“…A distributed wideband spectrum compressive sensing approach based on consensus optimization was developed.The cognitive radio users firstly collected the time-domain sampling by compressive sampling and recover the local spectrum.Then the spectrum of primary users is recovered jointly by cooperative cognitive radio users,which utilizes iterative consensus optimization to reach globally sensing outcomes via one-hop local communication only.In particular,a weighted consensus-averaging constraint is introduced to reduce the number of the consensus constraints,which lowers the computation loads and expedites the convergence.The convergence of the proposed distributed cooperative spectrum sensing scheme is proved analytically.Simulations demonstrate that the proposed scheme can effectively sense the spectrum from compressive sample.…”
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Interference from IMT system to mobile satellite system in 1 518～1 525 MHz band by Rui HAN, Xiaoyan ZHANG, Chang LIU, Guan WANG

“…In order to analyze the feasibility of deploying mobile satellite system below 1 518～1 525 MHz band，the interference from the IMT system in 1 492～1 518 MHz band to the mobile satellite system in 1 518～1 525 MHz band was studied in detail via theoretical analysis and simulations based on the combing of the ITU recommendations and radio regulation.Aiming at the interference link from IMT base station to the terminal of mobile satellite system in different scenarios，the Monte Carlo simulation method was used to calculate the blocking and the adjacent channel interference.The interference blocking probability and the coexisting conditions between the two systems in adjacent band were given in the simulation results.The conclusion can be used to support the planning of adjacent band by national radio management department.…”
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An Analytical Approach to Opportunistic Transmission under Rayleigh Fading Channels by Yousaf Bin Zikria, Sung Won Kim, Heejung Yu, Seung Yeob Nam

“…In cognitive radio sensor networks, the routing methods including multiple relays have been extensively studied to achieve higher throughput and lower end-to-end delay. …”
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Investigation of the Polycrystalline Silicon PV Cell Efficiency in 3D Approximation versus Electromagnetic Field under Monochromatic Illumination by Adama Ouedraogo, Boubacar Soro, Ramatou Konate, Fati Amadou Oumarou, Dieudonné Joseph Bathiebo

“…This manuscript is about the electric output of the silicon (Si) photovoltaic (PV) cell versus the electromagnetic field of a radio wave and a monochromatic illumination in three-dimensional (3D) assumptions. …”
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Performance Enhancement of Indium Zinc Oxide Thin-Film Transistors Through Process Optimizations by Mingjun Zhang, Jinyang Huang, Zihan Wang, Paramasivam Balasubramanian, Yan Yan, Ye Zhou, Su-Ting Han, Lei Lu, Meng Zhang

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High Energy Efficient Heterogeneous Networks: Cooperative and Cognitive Techniques by Heng Wang, Jiamo Jiang, Jian Li, Manzoor Ahmed, Mugen Peng

“…As the promising solution for improving the performance of HetNet, both the cooperative communication and cognitive radio techniques to mitigate the interference in HetNet are surveyed. …”
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Suzaku Observations of the Cold Front in A3667: A Nonequilibrium Ionization State of the Intracluster Medium by Mona Shishido, Yuusuke Uchida, Takayoshi Kohmura

“…In addition, the NEI state of the ICM in A3667 seems to be associated with the elongated radio halo bridging the region between the northwestern radio relic and the prominent cold front in A3667 across the cluster center.…”
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ABUJA RESIDENTS’ PERCEPTION OF MASS MEDIA COVERAGE OF THE 2023 PRESIDENTIAL ELECTION CAMPAIGN IN NIGERIA by DANIEL T. EZEGWU, AGNES. O. EZEJI, GLORIA NWAKEGO CHUKWUEMEKA, CHIOMA ROSE CHIME-NGANYA

“…The study concludes that most Abuja residents were highly exposed to mass media coverage of the 2023 presidential election campaign in Nigeria and they accessed the coverage through radio medium. The researchers recommended that subsequently, political parties in Nigeria should use the radio medium to pass their campaign messages than other forms of media since most respondents accessed the 2023 presidential election campaign through the medium. …”
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Communication channels with variable parameters by V. L. Khazan, M. N. Kovaleva

“…The theory of «paired echoes» is a universal mathematical apparatus for analyzing linear and nonlinear phenomena in radio engineering circuits and communication channels. …”
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A educação como instrumento de mudança de país e de vida: o percurso migratório de estudantes imigrantes das universidades federais do sul do Brasil by Luise Bittencourt Peres, Sebastião Airton da Rosa Cerqueira-Adão, Carolina Freddo Fleck

“…Com os resultados desenvolveu-se as seguintes categorias de análise: os processos migratórios vivenciados pelos estudantes, a educação como fator decisório e o acesso a emprego, moradia e saúde: dificuldades no Brasil. Como alguns resultados principais tem-se que o fator decisório para o deslocamento migratório foi a oportunidade de estudo no Brasil, aliada a melhores condições de vida. …”
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WALLABY Pilot Survey and ASymba: Comparing H i Detection Asymmetries to the SIMBA Simulation by Mathieu Perron-Cormier, Nathan Deg, Kristine Spekkens, Mark L. A. Richardson, Marcin Glowacki, Kyle A. Oman, Marc A. W. Verheijen, Nadine A. N. Hank, Sarah Blyth, Helga Dénes, Jonghwan Rhee, Ahmed Elagali, Austin Xiaofan Shen, Wasim Raja, Karen Lee-Waddell, Luca Cortese, Barbara Catinella, Tobias Westmeier

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The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys by Ezequiel Treister, C. Megan Urry

“…In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X-ray wavelengths. We then describe the most commonly used methods to find these sources, including optical/UV, radio, infrared, and X-ray emission, and optical emission lines. …”
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Key technologies and research progresses in cognitive SWIPT by Xiaorong XU, Minghang SUN, Linhui SHEN, Yingbiao YAO, Wei FENG

“…The combination of cognitive radio (CR) and simultaneous wireless information and power transfer (SWIPT) has become one of the research hotspots in modern high-efficient cognitive radio communications.Firstly,the introduction of SWIPT and cognitive SWIPT were illustrated.Secondly,two types of receiver structures commonly used in SWIPT networks were introduced and the corresponding energy harvesting formulas were given.Thirdly,system model of cognitive SWIPT network and the research progresses of cognitive SWIPT combined with cooperative relaying and MIMO were presented respectively.Future research prospects of the key technologies in cognitive SWIPT network were investigated.Finally,some recent research achievements of the key technologies in cognitive SWIPT were given.Certain referencing values in the theoretical research and future practical applications of high energy-efficient secure cognitive SWIPT communication network were provided.…”
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Edge computing and network slicing technology in 5G by Hongyu XIANG, Yangwen XIAO, Xian ZHANG, Zhuying PIAO, Mugen PENG

“…As a cost-efficient way to meet the wide range of use cases that the fifth generation wireless network will provide,network slicing and edge computing have been advocated by both academia and industry.In the concept of network slicing,the network entities are sliced into several logical networks to provide the requested services for different use cases.The edge computing pushes the frontier of computing applications,data,and services away from centralized nodes to the logical extremes of a network and even the user equipments,which can improve the traditional mobile broadband service capability,and handle with the emerging machine type service.The edge computing based radio access network slicing was proposed as a combination of edge computing and network slicing.The radio access network slicing can meet the diverse use cases and business models in 5G,and enable operators to flexibly provide personalized network services based on third-party need and network situation in a cost-efficient way.…”
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Delay characteristics of time-sensitive services in 5G networks by Jianyu CAO, Wei FENG, Ning GE

“…For industrial applications, the time-sensitive services (TSS) and non TSS need to share the radio resources and the same buffer queue in 5G radio access network (RAN).This incurs the complex coupling and uncertainty of the delays.Considering the scenario where ON-OFF TSS and non TSS coexist, the calculation methods for the random delay (including queueing delay) characteristics were established based on the two-stage tandem queueing model, to obtain the mean value, standard deviation, bound violation probability and probability distribution of the delay of TSS.On this basis, the influence of non TSS on the random delay characteristics of TSS was analyzed.It is shown that the influence of non TSS on the random delay characteristics of ON-OFF TSS is related to the rotation frequency of ON-OFF stages.Moreover, the delay probability distribution of ON-OFF TSS has approximately the same right tail length as Gamma distribution.…”
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