Delay analysis of multi-state Markov channels by Zhiqiang ZHOU, Tong YE, Dong LI

“…With the rapid development of wireless technology,the wireless communication offers great flexibility and convenience to mobile users.However,due to the slow/fast fading caused by multipath effect,the transmission rate of wireless fading channel is unstable,which will affect the transmission delay and communication quality.In literature,the wireless fading channel is also called Markov channel.The transition of channel state is controlled by a Markov chain.A detailed analysis was given for a three-state Markov channel.The whole system was modeled as an M/MMSP/1 queuing system considering the arrivals and services of packets.By defining conditional start service probability and conditional expected delay,the analytical expressions of mean service time and mean waiting time of packets were given using the state transition matrix.At last,by discussing the mean waiting time in limiting cases,the factors that affect the delay were given.…”
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Single anchor node real-time positioning algorithm based on the antenna array by Yong Fu

“…The antenna radiation characteristics and the wireless channel model are studied first, followed by the evaluation of a single anchor node localization algorithm for wireless sensor network real-time positioning on the base of antenna radiation modeling and radio channel propagation model research then. …”
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A bilevel game matching algorithm in cellular-D2D hybrid scenario by Tian YAO, Hui ZHANG

“…With the rapid development of wireless technologies,wireless access networks enter the 5G system phase.5G environment with various technical scenarios is heterogeneous and dynamic,causing great challenges for wireless resource management.Hence,it is significant to achieve the optimal matching between network resources and user demands.Therefore,wireless resource matching algorithms in 5G environment have become one of the hottest research directions.A bilevel game matching algorithm in cellular-D2D hybrid scenario was proposed:a QoE based matching model considering user fairness was constructed,the bilevel matching game theory was used to solve this optimization problem,and the effectiveness of proposed algorithm was verified through simulations.…”
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Analysis and Improvement of a Robust User Authentication Framework for Ubiquitous Sensor Networks by Ling Chi, Liang Hu, Hongtu Li, Jianfeng Chu

“…The security system is one of standards for measuring whether a wireless sensor networks is an outstanding wireless sensor network. …”
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On Critical Density for Coverage and Connectivity in Directional Sensor Network over Stochastic Channels Using Continuum Percolation by Jinlan Li, Chaowei Wang, Yinghai Zhang, Lin Kang, Zhi Chen

“…Sensing coverage, which is one of vital issues in the design of wireless sensor networks (WSNs), can usually interact with other performance metrics such as network connectivity and energy consumption. …”
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Feature-Centric Video Transmission and Analytics in Large-Scale Internet of Video Things by Hongan Wei, Yuxiang Liu, Kejian Hu, Liqun Lin, Youjia Chen, Tiesong Zhao, Wanjian Feng

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Voice Assistant Utilization among the Disability Community for Independent Living: A Rapid Review of Recent Evidence by Paola Esquivel, Kayden Gill, Mary Goldberg, S. Andrea Sundaram, Lindsey Morris, Dan Ding

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Analysis of link interruption characteristics in the DTN by LI Yun, WANG Xiao-ying, LIU Zhan-jun, ZHOU Ya-hui

“…The characteristic of wireless link in the DTN has an important influence on the performance of networks. …”
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Metamaterial Sensors by Jing Jing Yang, Ming Huang, Hao Tang, Jia Zeng, Ling Dong

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Research and Implementation of Agreement on a Recording Control by Yanchao Wu, Zhihui Xiao, Yishan Chen

“…With the rapid development of wireless high-speed data services，broadband has become an inevitable trend in the development of wireless private network. …”
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Ubiquitous Computing for Remote Cardiac Patient Monitoring: A Survey by Sunil Kumar, Kashyap Kambhatla, Fei Hu, Mark Lifson, Yang Xiao

“…New wireless technologies, such as wireless LAN and sensor networks, for telecardiology purposes give new possibilities for monitoring vital parameters with wearable biomedical sensors, and give patients the freedom to be mobile and still be under continuous monitoring and thereby better quality of patient care. …”
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Customer-centered mobile network intelligent operation approach by Kai LI, Wei LIU, Guiyang LUO, Jinglin LI

“…The rapid development of new types of services places greater demands on support ability of the personalized service in mobile communication systems.Traditional intelligent pipe carriers only consider limited factors such as current traffic status of the network and number of loading binding quantity,indicating that they don’t take account of the demands and features of wireless customers.Meanwhile,the rule-based method is overwhelmed due to numerous metrics of the wireless network,the complicated correlation among them and heterogeneous requirements of metrics from various users.Therefore,a user-centric intelligent network operation service was proposed,which utilized machine learning and deep learning method.The service had the ability to learn the correlation between user QoS guarantee requirements and wireless network metric status to construct a joint support architecture based on user requirements and wireless network status.The validity of the method on real data was verified.…”
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Low-Complexity Architecture of Orthogonal <italic>N</italic>-Continuous Precoding for Sidelobe Suppression of OFDM Signals and Its Analysis by Hikaru Kawasaki, Fumihide Kojima, Takeshi Matsumura

“…High sidelobes of orthogonal frequency-division multiplexing (OFDM) signals must be resolved for future wireless communications. In this study, we propose and analyze an efficient orthogonally linear precoding to suppress the sidelobes in OFDM systems. …”
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Application of multi-antenna technology based on the indoor scene by Chongyang LI, Guoan HU, Boyong FAN, Yongping ZHU

“…Multi-antenna technology is the key technology of high speed broadband wireless access network,it has a broad application prospect in the fourth generation mobile communication systems.Indoor coverage is the main business for mobile communication.It is very important to use the MIMO technology to solve the problem of indoor wireless communication.Focused on the theme of wireless MIMO technology in the indoor coverage,MIMO channel capacity,indoor channel modeling,indoor coverage systems were mainly analyzed.…”
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An Adaptive Framework for Real-Time ECG Transmission in Mobile Environments by Kyungtae Kang

“…Wireless electrocardiogram (ECG) monitoring involves the measurement of ECG signals and their timely transmission over wireless networks to remote healthcare professionals. …”
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Federated edge learning with reconfigurable intelligent surface and its application in Internet of vehicles by Ping WANG, Zhiwei YANG, Heju LI

“…Aiming at the problem that it is difficult to achieve an optimal trade-off between wireless communication and model accuracy in FEEL training caused by the heterogeneity of wireless links and data distribution, a reconfigurable intelligent surface (RIS) enabled federated edge learning system was proposed, which exploited the channel reconfigurability of RIS to adaptively manipulate the signal propagation environment, and utilized the over-the-air computation (Aircomp) to achieve fast model aggregation.Specifically, the convergence behavior of the FEEL algorithm under the influence of wireless channels and data heterogeneity was rigorously derived, and accordingly, an unified wireless resources optimization problem was constructed with the goal of minimizing the learning loss by jointly designing the transceiver design and the RIS phase shift.Simulation results demonstrate that the proposed scheme achieves substantial performance improvement compared against several baselines, and prove that RIS can play an important role in improving the accuracy of Aircomp enabled FEEL systems under data heterogeneity.Finally, the probability of applying it into Internet of vehicles is discussed.…”
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Equivalent spectral bandwidth concept in ubiquitous networks and applications in vertical handoff algorithms by Su PAN, Qiang YE, Sheng-mei LIU

“…Future wireless telecommunication system will integrate heterogeneous wireless access networks and provide ubiquitous services.The concept of equivalent bandwidth for heterogeneous wireless networks was proposed to describe the resource occupation of users.This concept was adopted in the vertical handoff control algorithm with the Markov decision process model.The simulation results show that the proposed algorithm leads to larger revenue compared with the threshold based handoff algorithms.…”
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Communication Network for Sports Activity Monitoring Systems by Yuhua Li, Lishuang Wan, Haimin Zhang

“…Besides, considering the energy causality limitation of sensor nodes and relay nodes, a collaborative transmission model of wireless body area network based on wireless cognitive network is constructed. …”
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Live video transmission optimization mechanism based on edge intelligence in high client-density environment by Xiaodan GU, Wenjia WU, Zhen LING

“…The traditional live video transmission optimization mechanism is deployed on the server side, which cannot quickly respond to the dynamic changes of the user’s wireless network environment.To address this problem, a live video transmission optimization mechanism based on edge intelligence called S-Edge was proposed.It was deployed on the OpenWrt-based wireless access point, and comprehensively utilized the wireless channel state information such as airtime utilization and signal-to-noise ratio to make intelligent decisions on terminal priority and transmission rate based on fuzzy logic theory.Furthermore, the active queue management with hierarchical token bucket and service demand-driven wireless transmission rate adaptive control technologies were introduced to realize the real-time scheduling of live video data.In order to verify the effectiveness and performance of the proposed mechanism, a high client-density environment was built through user clusters based on multi-radio interfaces in the real-world scenario.Experimental results show that S-Edge can significantly reduce the average delay and packet loss rate, which meets QoS requirements of live video transmission services in the high client-density environment.…”
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A 60 GHz Planar Diplexer Based on Substrate Integrated Waveguide Technology by Nikolaos Athanasopoulos, Dimitrios Makris, Konstantinos Voudouris

“…The proposed SIW planar diplexer is integrated into a millimeter-wave transceiver front end for 60 GHz point-to-point multigigabit wireless backhaul applications, providing high isolation between transmit and receive channels.…”
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