Antenna Analytical Representation by a Two-Port Network by Peter L. Tokarsky

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Implementation Method of GEO and LEO Satellite Tracking Compatible Flat-Plate Antenna by Jian CHEN, Zhengqian ZHANG, Xinsheng MA, Ting CHAO, Gangtao GUO

“…In order to improve the portability, disassembly and usability of the satellite communication antenna products in the fi eld, a GEO and LEO satellite tracking compatible fl at-plate antenna implementation method was proposed, the micro strip array antenna was integrated with the radio frequency channel, and the radio frequency of the antenna was fl at and integrated, combined with the high density multi-layer vertical interconnection technology, the whole machine was small in size, light in weight and low in power consumption, and the tracking control unit could satisfi ed the requirements of GEO Beacon and carrier tracking, also could satisfi ed the LEO analysis and the program guidance tracking.The antenna did not need manual assembly and disassembly, and could be used for satellite communication with onebutton deployment.high-precision tracking and stable communication could be achieved for GEO, MEO and LEO satellite.…”
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TRAINING OF SPECIALISTS ON INFORMATION TECHNOLOGIES FOR THE OIL AND GAS INDUSTRY by Stanislav A. Kudzh, Maksim A. Nazarenko

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Identifying a Point-Symmetrical Morphology in the Core-Collapse Supernova Remnant W44 by Noam Soker

“…Motivated by recent identifications of point-symmetrical morphologies in CCSNRs and their match to the JJEM, I revisit the morphological classification of CCSNR W44. I examine a radio map of W44 and find the outer bright rim of the radio map to possess a point-symmetric structure compatible with shaping by two energetic pairs of opposite jets rather than an S-shaped morphology shaped by a precessing pair of jets. …”
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Doppler Estimation Based on Frequency Average and Remodulation for Underwater Acoustic Communication by Chan-Ho Hwang, Ki-Man Kim, Seung-Yong Chun, Sang-Kook Lee

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Broadband Printed Cross-Dipole Element with Four Polarization Reconfigurations for Mobile Base Station Array Antenna Applications by Soon-Young Eom, Ic-Pyo Hong, Jong-Myeon Kim

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Edge Intelligence-Based RAN Architecture for 6G Internet of Things by Yang Liu, Qingtian Wang, Haitao Liu, Jiaying Zong, Fengyi Yang

“…Edge Intelligence, which blends Artificial Intelligence (AI) with Radio Access Network (RAN) and edge computing, is recommended as a crucial enabling technology for 6G to accommodate intelligent and efficient applications. …”
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Design of an L-Band Cross-Dipole Phased Array Feed for FAST by Yubing Han, Luoqing Zhong

“…The Five-Hundred-Meter Aperture Spherical Telescope (FAST) is a Chinese megascience project that aims to build the largest single dish radio telescope in the world. Given its multiple simultaneous beam formation, phased array feed (PAF) is widely used to extend the field of view and enhance the survey speed of the radio telescope. …”
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New Index to Characterize Ionospheric Irregularity Distribution by Endawoke Yizengaw

“…Abstract Characterization of the global ionospheric irregularities as a function of local time, longitude, altitude, and magnetic activities is still a challenge for radio frequency operations, especially at the low‐latitude region. …”
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Active Pointing Compensation of a HTS Multibeam Antenna by Xudong Wang, Pengpeng Wang

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Investigation of Cooperation Technologies in Heterogeneous Wireless Networks by Zhuo Sun, Wenbo Wang

“…Heterogeneous wireless networks based on varieties of radio access technologies (RATs) and standards will coexist in the future. …”
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Mobile edge computing and application in traffic offloading by Jianmin ZHANG, Weiliang XIE, Fengyi YANG, Zhouyun WU, Liang XIE

“…Mobile edge computing（MEC）makes it possible to deploy and provide service locally,which is close to the users,by enabling the IT and cloud computation capacity at the radio access network (RAN).Thus,MEC can improve the quality of experience (QoE) by reducing the latency,and decrease the network operation cost through reducing backhaul capacity requirement.Meanwhile,based on the network context information (location,network traffic load,radio information,etc) exposure to applications and services,MEC can further improve the QoE of user and provide the platform to third-party partners for application and service innovation.Besides the introduction of MEC,the detailed MEC platform was presented.Furthermore,the traffic offloading solution based on MEC was proposed and compared with the solution of local IP access and selected IP traffic offload (LIPA/SIPTO).In addition,the problems and challenges of the MEC were also discussed in detail.…”
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Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference by G. V. Kulikov, T. T. Do, A. A. Lelyukh, V. D. Nguyen

“…Analysis of the reception noise immunity of multiple phase shift keying (M-PSK) and quadrature amplitude modulation (M-QAM) signals has demonstrated a significant reduction in the quality of reception of discrete information due to the presence of various types of non-fluctuating interference in a radio communication channel including targeted harmonic interference. …”
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On the Use of SuperDARN Ground Backscatter Measurements for Ionospheric Propagation Model Validation by Joshua J. Ruck, David R. Themens, Pasha Ponomarenko, Angeline G. Burrell, Bharat Kunduri, J. Michael Ruohoniemi, Sean Elvidge

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Short-segment versus long-segment fixation for thoracolumbar burst fractures: which is the best option? by Ernesto Enrique Horta Tamayo, Diana Rosa Ortega Raez, Luis César Acosta González

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Accelerated Reconstruction of Scenes Using CUDA-Based Parallel Computing by Gui Zou, Jin Jiang, Qi Chen

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5G network intelligent scheduling based on core network analysis and decision by Qingyang WANG, Zhibin YANG, Biao LONG, Haoquan LIANG

“…Larger bandwidth and complex technology of the 5G networks inevitably bring a significant increase in overall energy consumption, so green energy-saving of mobile networks has attracted widespread attention.The long-term coexistence of 5G and 4G, as well as the wide coverage of low-frequency and the wide bandwidth characteristics of high-frequency of 5G, enable different types of services to be carried by different carriers of 5G or 4G respectively.Based on the above considerations, a 5G network intelligent scheduling scheme based on corenetwork analysis and decision was proposed, which could schedule different types of services to different radio access and frequencies for carrying, so as to achieve service assurance and energy-saving.Simulation results reveal that, compared with the existing schedule scheme within radio access network, 5G network intelligent scheduling has advantages in energy saving while ensuring quality of service.Finally, the progress of international standardization of 5G network intelligent scheduling was introduced.…”
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SPECTRUM OCCUPANCY MEASUREMENT AND ANALYSIS AT OSUN STATE UNIVERSITY CAMPUS, OSOGBO, NIGERIA by HAMMED OYEBAMIJI LASISI, BOLATITO FATIMAH ADERINKOLA, FUNMILOLA MARGARET ADEAGBO

“… The rapid growth of new wireless communication applications and services has increased the demand for effective radio spectrum usage. However, present spectrum allocation policy has left some bands unoccupied. …”
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Research on the application of 700 MHz frequency band in 5G network optimization by Yejiang ZHANG, Lei SUN, Yiyan YIN, Xiaokang YANG, Jian HU

“…The 700 MHz frequency band has the advantages of low frequency, strong diffraction ability, and good coverage effect.China Mobile and China Radio and Television had made it clear that they would jointly build and share 5G networks based on 700 MHz frequency band resources.Firstly, the coverage advantages of 700 MHz frequency band were analyzed theoretically, and then the pilot projects such as 700 MHz 5G station continuous road coverage test, residential building coverage performance test and fixed-point capacity performance test provided data support for the subsequent 700 MHz 5G network construction and optimization.It could release the value of 700 MHz gold spectrum to the greatest extent and continuously improve the quality of 5G wireless network from the aspects of actively avoiding 700 MHz radio and television frequency interference, giving full play to the advantages of high and low frequency networking schemes, and actively exploring multi band collaborative optimization strategies.…”
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On 6G and wide-area IoT by Xiaohu YOU, Hao YIN, Hequan WU

“…6G technology is still in its initial stage of research.It is expected that in the next few years,the world will gradually reach a consensus on visions and key technical parameters of 6G .Focusing on the further expansion of application areas and further enhancement of technical capability,the technical fields were summarized that may be involved in the future 6G radio access,including the coverage expansion based on the satellite-terrestrial integration,millimeter wave and terahertz communications,data-driven network artificial intelligence (AI) and security,large-scale cooperation and cell-free architecture innovation,etc.On this basis,some important technologies,such as ultra-high reliability and low latency,full dynamic radio resource allocation and centimeter level precise positioning,which need to be further broken through in the wide-area Internet of things (IoT) based on the public mobile communication system were analyzed and prospected.Finally,the conclusions were given.…”
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