Waveguide-Based Antenna Arrays for 5G Networks by Arismar Cerqueira Sodré, Igor Feliciano da Costa, Renan Alves dos Santos, Hugo Rodrigues Dias Filgueiras, Danilo Henrique Spadoti

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Data Delivery Method Based on Neighbor Nodes’ Information in a Mobile Ad Hoc Network by Shigeru Kashihara, Takuma Hayashi, Yuzo Taenaka, Takeshi Okuda, Suguru Yamaguchi

“…In a MANET, it is difficult to deliver data reliably due to instabilities in network topology and wireless network condition which result from node movement. …”
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Multicast resource allocation scheme considering source-coding characteristic in OFDM systems by XU Wen-jun, HE Zhi-qiang, NIU Kai, LIN Jia-ru, WU Wei-ling

“…Aiming to solve the problem that unicast or conventional multicast was incapable of make full use of the opening for wireless propagation in orthogonal frequency division multiplexing（OFDM） systems,a resource allocation scheme involving several multicast groups was proposed to maintain proportional fairness among groups.The proposed scheme consisted of subcarrier assignment algorithm and power allocation algorithm.The former was achieved by modi-fying the existing unicast subcarrier assignment algorithm,whilst optimal power allocation on condition that subcarrier assignment was determined was reached by the latter based on theoretically derived non-linear equations.Simulation re-sults show that the proposed scheme can ensure perfect fairness among different multicast groups,and remarkably out-performs conventional multicast in terms of rate-sum capacity.Combined with the low complexity,it is suitable for the application to voice/video multicast in actual wireless systems.…”
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Design and Study of Cognitive Network Physical Layer Simulation Platform by Yongli An, Dong Wang, Yang Xiao

“…IEEE 802.22 WRAN, the first to follow the standard in cognitive radio technology, is featured by spectrum sensing and wireless data transmission. As far as wireless transmission is concerned, the availability and implementation of a mature and robust physical layer algorithm are essential to high performance. …”
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Research on WiFi Penetration Testing with Kali Linux by He-Jun Lu, Yang Yu

“…Aiming at the vulnerability of wireless network, this paper proposed a method of WiFi penetration testing based on Kali Linux which is divided into four stages: preparation, information collection, simulation attack, and reporting. …”
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Establishing scheme and algorithm for dynamic key-path of pair wise key for sensor networks by HU Yu-zhou1, WANG Lei2, CHEN Zhi-ping2, GU Xue-dao3

“…Security schemes of pair wise key establishment ensure communication security in wireless sensor networks. Dynamic key-path in pair wise key establishment farther increases communication security in the networks. …”
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An Algorithm That Predicts CSI to Allocate Bandwidth for Healthcare Monitoring in Hospital's Waiting Rooms by Di Lin, Fabrice Labeau

“…In wireless healthcare monitoring systems, bandwidth allocation is an efficient solution to the problem of scarce wireless bandwidth for the monitoring of patients. …”
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Distributed Voronoi-Based Self-Redeployment for Coverage Enhancement in a Mobile Directional Sensor Network by Tien-Wen Sung, Chu-Sing Yang

“…Therefore, conditions of directional sensor networks are dissimilar to those of generic wireless sensor networks for researches, especially on the sensing coverage. …”
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A Voice Data Storage Strategy of Record Server in Broadband Cluster System by Chunbin Dou, Zhihui Xiao, Yishan Chen

“…With the rapid development of wireless high-speed data services，broadband has become an inexorable trend of the development of wireless network. …”
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Study of international standard ISO/IEC 30144: 2020 applied in intelligent substation auxiliary monitoring by Mingjuan WU, Shuyi CHEN, Haitao LIU

“…Internet of things and wireless sensor network technology has been gradually applied in substation monitoring, as one of the important means of substation automation.The international standard ISO/IEC 30144: 2020 put forward the system architecture, communication architecture and system requirements for wireless sensor network supporting substation.In order to promote the standardized IoT-based smart substation application, taking the standard as a reference, the background and main contents of the international standard were expound, and examples of sensor node types, network communication interfaces and sensor network monitoring platform supporting the substation in the smart substation were given, so as to provide an instantiation method for the application and implementation of the international standard, which is conducive to the realization of standardized, refined and unmanned substation supervision.…”
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Physical layer security for the air-space-ground communication networks by Shuai HAN, Xiangxue TAI, Weixiao MENG

“…As a typical application of wireless communications,the air-space-ground communications networks are facing serious wireless communications security issues due to its inherent broadcast nature and wide coverage.Especially in the field of military satellite communications,the requirement of secure communications security is even more crucial.How to realize the security of communications is a problem must be faced.A model for physical layer security communication in air-space-ground communication network was proposed which was a cooperative layer-direct connect mixed-to-ground physical layer secure communication model.Based on this model,the security of the system was further improved by studying the relay selection problem and the power distribution problem of satellite and relay,and an overall scheme to enhance the confidentiality of the communication network was also proposed.…”
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Research on decision making of optimal communication system based on user by Yu-hang WU, Shao-hong YAN

“…In order to study the problem of how to choose the wireless channel connection system to meet the needs of users in the wireless communication environment,according to the number of users using the Irish call loss,the estimated number of users need to meet the channel should be provided.Followed by the number of channels to establish the rela-tion model between user requirements and system capacity,introducing comprehensive evaluation factors to evaluate FDMA,TDMA and CDMA communication system.Finally a solution was put forward to meet the optimal decision the needs of users.This scheme not only realizes the effective utilization of the channel,and the channel has certain redun-dancy,avoid the system reconstruction caused by future user growth,capital waste,provides a measure of win-win choice for different number of users of the communication system.…”
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Dynamic spectrum allocation for cognitive radio sensor networks based on improved genetic algorithm by Chang CAI, Yafang WANG, Bingmei MIAO, Hui JIANG

“…ISM (industrial scientific and medical) bands where wireless sensor network works faced with the shortage of spectrum resources problems.Aimed at this case,dynamic spectrum allocation in cognitive radio technology was applied in wireless sensor network.A dynamic frequency spectrum allocation scheme was proposed.The algorithm was a modified adaptive genetic algorithm which was based on graph coloring model.In addition,the objective functions of the algorithm were maximum bandwidth gains and minimum spectrum handoff,besides,in the crossover and mutation process,adaptive crossover probability and mutation probability was used instead of the fixed.Experimental results confirm that compared with the traditional genetic algorithm and color sensitive graph coloring algorithm,the proposed algorithm can achieve the expected goal of improving the spectral efficiency and reducing energy consumption.…”
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Robust time resource allocation and multi-user selection algorithm for data and energy integrated communication network by Jiayu YANG, Jie HU, Supeng LENG, Kun YANG

“…In the existing research on resource allocation in wireless energy and data transmission,the impact of battery capacity on throughput under multi-user scenarios is not considered.A robust resource allocation algorithm was proposed to optimize throughput and solve the problem that a single model could not reasonably allocate resources in real world network scenarios due to large differences in battery capacity.In addition,a connection between multi-user selection and slot allocation was found,and a joint optimization algorithm of multi-user selection and slot allocation under the constraint of power was proposed.The simulation results show that the proposed algorithm has better throughput performance and is more suitable for wireless data and energy transmission network.…”
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Design and Implementation of High Frequency Broadband Gbit/s System Based on MIMO-OFDM by Junyu Peng, Sunzeng Cai, Zhenghang Zhu, Jing Xu, Ting Zhou

“…Spectrum bands below 6 GHz have been crowded currently,but demand for high speed wireless communication in low speed environment is growing.Research and development of high-frequency wireless communication system is an important way to alleviate this problem.System structure for high frequency broadband communication was proposed.Physical layer key algorithm such as synchronization,channel estimation and MIMO detection was described briefly.The high frequency broadband Gbit/s system based on MIMO-OFDM was implemented on FPGA based hardware platform.Bandwidth and data rate of the system was tested in indoor environment.Test result shows that performance of the system conforms to design requirements.…”
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Method of node distribution for heterogeneous WMSN based on load balancing by Yong-hong ZHU, En-jie DING

“…Multiple hop transmission in wireless sensor networks(WSN)would bring the energy hole problem near the sink.It proved that the energy hole problem would appear in any position in heterogeneous wireless multimedia sensor networks and propose a method of the node distribution based on load balancing to solve the problem.The energy consumption was analyzed on the basis of considering the data compression ratio and the energy consumed for data transmission and processing.It proved that in heterogeneous WMSN the energy consumption of data processing would affect the node distribution and define a word that profit of data processing.The simulation results show that the energy utilization rate and the survival time of the network can be effectively improved by using the method proposed.…”
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Design concept of novel balanced multi-band antenna for sensor by LV Wen-jun1, ZHU Hong-bo1

“…Design concept of a novel balanced multi-band tag antenna for Internet of things sensors applications was proposed.The antenna has a symmetrical structure so that it can be easily and directly integrated with differential driving RF front ends.The antenna’s surface current distribution,radiation patterns,impedance matching characteristics and gain,were numerically studied by using computer simulations,and the operating principle of the antenna was determined.Based on the numerically and basic experimental results,it is concluded that the antenna has a compact size and moderate gain,and can cover the bands of 2.4～2.5GHz/5.1～12GHz,which are for RFID and short-range wireless access applications.Thus the antenna can be used as tag antenna for wireless sensors in Internet of things.…”
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Research and deployment on the innovation solution for 4G voice of high-speed railway scenario by DePing XU, XiangChen MA, RiTao CHENG, LuJing GENG

“…High-speed railway is a special scenario of 4G network coverage,the project planning and construction of high-speed railway 4G network coverage have special difficulty,wireless coverage is different.High-speed railway scenario 4G voice solution needs to use different voice deployment strategy according to the quality of wireless coverage.The current situation of high-speed 4G network planning index and the ability to support voice services were analyzed,the alternative voice program under the high-speed railway 4G coverage was researched.Considering enhancing the user experience and feasibility,the feasible high-speed railway scene 4G voice service deployment recommendations was put forward.…”
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A Multihoming Clustering Algorithm for Vehicular Ad Hoc Networks by Samo Vodopivec, Janez Bešter, Andrej Kos

“…Clustering in vehicular ad hoc networks is an effective approach to make dynamic wireless vehicular sensor networks more manageable and stable. …”
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Adaptive Deployment Scheme for Mobile Relays in Substitution Networks by Karen Miranda, Enrico Natalizio, Tahiry Razafindralambo

“…We present how the mobility of routers impacts the performance of a wireless substitution network. To that end, we simulate a scenario where a wireless router moves between three static nodes, a source and two destinations of UDP traffic. …”
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