WLAN indoor positioning algorithm based on skewness-kurtosis testing by Zhen-long SONG, Gang-yi JIANG, Chao HUANG, Mei YU, Jia-le ZHANG

“…Focused on the issues that large positioning errors produced by the inconsistency of received signal strength (RSS)sample population distributions under indoor wireless local area network (WLAN),an indoor positioning algorithm based on skewness-kurtosis testing was proposed.By using the testing method of skewness and kurtosis,whether the RSS samples come from the normal population or not was checked.The distribution functions of the samples accepting null hypothesis were approximated with normal distribution,and the probability density functions of the samples refusing null hypothesis were estimated by kernel function.Experimental results show that the proposed algorithm leads to a 15 percent improvement over the previous methods.Moreover,the proposed algorithm can significantly reduce the workload of the off-line phase at the same positioning accuracy.…”
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Multislot Antenna with a Screening Backplane for UWB WBAN Applications by Yun-fei Wei, Christophe Roblin

“…A novel multislot antenna with a conducting backplane reflector (MSA-BP) designed for ultrawideband wireless body area networks (WBANs) applications is presented. …”
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Trends and enabling technologies on high-speed metro and short-reach optical transmission systems by Lei ZHANG, Yixiao ZHU, Fan ZHANG, Zhangyuan CHEN

“…The optical fiber communication network is the important infrastructure for the modern information society.Thanks to the reduction of fiber loss,the improvement of transceiver devices by electro-optical-electrical conversion,the development of modulation technology and the introduction of digital signal processing,the capacity of optical fiber transmission has been greatly improved.In recent years,due to the large capacity demand of data-centers and the next-generation wireless communication,metro and short-range transmission scenarios below 100 km have attracted lots of attention based on direct detection.The historical evolution of optical fiber communication systems was firstly reviewed,then the limiting factors in the direct detection system were analyzed.Furthermore,the principle and system configuration of one-dimensional to four-dimensional self-coherent technology were introduced,and finally,the low-cost evolution trend of the optical coherent transmission system was prospected.…”
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Study of a new code set in multi-rate CDMA VLC system by Jianping WANG, Danyang CHEN, Huimin LU, Jianli JIN, Lifang FENG

“…For the diverse traffic requirements of the wireless communication multiple access system and the characteristics of VLC, a new orthogonal variable spreading factor zero cross correlation (OVSF-ZCC) code set was proposed for multi-rate VLC code division multiple access (CDMA) system, which consisted of unipolar spreading sequences with variable lengths, and zero cross correlation properties.Assuming the radiation of LED light source was Lambert distribution, a multi-rate CDMA-VLC system with proposed code set was further presented.The effects of construction parameters, transmission rate and distance on system performance were evaluated.The results show that the new code set can effectively reduce multiple access interference (MAI), and support multiple transmission rate requirements of different users in multiple access systems.…”
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Load Spectrum Test and Analysis of Off-road Vehicle Transmission System based on Pascar Test Specification by Zou Xihong, Liu Yanlong, Zhao Qiulin, Zhu Xiang, Yu Yong

“…Automotive transmission system load spectrum is the indispensable data foundation of automotive transmission system designing,testing and evaluating.Aiming at the off-road vehicle transmission system of an enterprise,considering the design,test,analysis other purposes,choosing the measured parameters of torque,speed,gear position,brake pedal station,clutch pedal position,lubricating oil temperature,strain,acceleration signals and etc signals,the complete synchronous test scheme for transmission system load spectrum is constructed.Rounded and accurate measurement of the transmission system load spectrum based on the Pascar test specification provide basic data and important guidance for the design,test,analysis of automotive transmission system.Wireless torque measurement problem and the synchronization problem of different channels are solved and a complete solution scheme of data collection for automotive transmission system is provided.…”
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Paging and Location Management in IEEE 802.16j Multihop Relay Network by Kuan-Po Lin, Hung-Yu Wei

“…IEEE 802.16j is an emerging wireless broadband networking standard that integrates infrastructure base stations with multihop relay technology. …”
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Double-RIS assisted anti-jamming communication method based on joint active and passive beamforming optimization by Haiyan GUO, Zhen YANG, Yulong ZOU, Bin LYU, Yuntian FENG, Yujuan ZHAO

“…For double-reconfigurable intelligent surface (RIS) assisted wireless communication system, an anti-jamming communication method based on joint active and passive beamforming optimization was proposed.In order to maximize the received signal-to-interference-and-noise ratio (SINR), a joint active and passive beamforming optimization problem was formulated.By using the alternating optimization (AO) algorithm, the formulated joint optimization problem was divided into three subproblems, which were solved iteratively in an alternating manner.Specifically, the quasi-optimal passive beamforming vector of each RIS was obtained by applying the semidefinite relaxation (SDR) algorithm, and the optimal active beamforming vector of the BS was obtained based on the generalized Rayleigh quotient.Simulation results demonstrate that the proposed method outperforms the traditional single-RIS ant-jamming communication methods.…”
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Filter-Based Fading Channel Modeling by Amirhossein Alimohammad, Saeed Fouladi Fard, Bruce F. Cockburn

“…A channel simulator is an essential component in the development and accurate performance evaluation of wireless systems. A key technique for producing statistically accurate fading variates is to shape the flat spectrum of Gaussian variates using digital filters. …”
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Integrating 5G-U with time-sensitive networking for industrial Internet: architectures and technologies by Yueping CAI, Dong LI, Chi XU, Zhen WANG, Xiaowen ZHANG

“…Industrial Internet is one of enabling technologies for Industry 4.0.Networking is one indispensible technology of industrial Internet.The traffic types and communication requirements of typical industrial services were analyzed first.TSN (time-sensitive networking) and 5G-U (5G unlicensed) were considered as the promising wireline and wireless solutions for industrial Internet, respectively.The integration network architectures of 5G-U and TSN were presented based on four models, which included 5G-U as TSN networks, links, bridges/switches, and TSN as transport networks of 5G-U.The key technologies of the integrated architectures were integrations of time-synchronization plane, data plane, and control plane.Finally, research challenges and potential research directions in the filed were discussed.…”
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Joint Next-Hop/Relay Selection for Distributive Multihop Cooperative Networks by Ahmed Alkhayyat

“…In this paper, we propose a joint next-hop node and relay node selection (JNRS) protocol for wireless distributive multihop cooperative networks. …”
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2D Gain Enhancement Based on Single-Layer SIW Corrugated Technique with Slot Array Feeder by Mingtuan Lin, Chenglong Lin

“…Overall, our proposed technique will be beneficial for the design of high-gain antenna in 5G wireless terminals.…”
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Low-hit frequency-hopping communication systems for power Internet of things random access by Shu DU, Mei MA, Bo ZHAO, Qi ZENG, Xing LIU

“…The communication network is an essential component of the data acquisition and information transmission in power Internet of things (IoT).To meet the development requirements of multiple power service in the future, the wireless communication technique with flexible-access and high scalability is one of the development directions for power IoT.Due to the features of large-scale access, random access time, high security and reliability for information transmission of power IoT, a frequency-hopping (FH) technique with low-hit rate for random access was proposed.The construction algorithm of such FH pattern was based upon the combination and shift operation of conventional FH sequences.By the theoretical arithmetic and numerical simulation, the properties of the proposed FH pattern and the error-rate of the FH-based power IoT were evaluated.The analysis reveals that the new class of FH sequences and the system can meet the requirements of large-scale access and highly reliable communication for the power IoT, which has good application prospects.…”
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Directional Probability Perceived Nodes Deployment Based on Particle Swarm Optimization by Junguo Zhang, Yutong Lei, Chen Chen, Fantao Lin

“…Node deployment is the key problem of wireless sensor network technology. For a directional sensor network, the perceived probability model reflects the quality of the network. …”
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Sensor Grid Middleware Metamodeling and Analysis by Srimathi Chandrasekaran, Eunmi Choi, Jemal H. Abawajy, Rajesh Natarajan

“…Sensor grid is a platform that combines wireless sensor networks and grid computing with the aim of exploiting the complementary advantages of the two systems. …”
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A survey of physical layer security in space-air-ground communication and networks by Fuchao YAN, Yiliang LIU, Shuai HAN, Weixiao MENG

“…Space-air-ground communication and networks are the trend of wireless communication in the future.Because of its inherent broadcast nature and wide coverage,its communication and network systems will face serious security problems.How to ensure the security of space-air-ground communication and networks is an urgent problem to be solved.As an effective means of security,physical layer security technology has attracted more and more attentions.The basis of physical layer security and the channel model of space-air-ground communication and networks were introduced,and then the common technologies in physical layer security were introduced and summarized,such as wiretap coding,beamforming and artificial noise,relay cooperation interference and physical layer key generation,finally the challenges and future development trend of physical layer security in space-air-ground communication and networks were proposed.…”
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A Classical LTE Cellular System Simulator for Computer Network Education by Julius Yaw Ludu, Justice Kwame Appati, Ebenezer Owusu, Prince Boakye-Sekyerehene

“…Usability testing of the proposed study reveals that the system is much easier to simulate the various scenarios in wireless communication.…”
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Research on Design and Application of National Fitness System by Shengyou Wang

“…The perception layer mainly uses Internet of Things gateway, central machine, wireless perception node, and fitness data dashboard to obtain fitness data. …”
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Smart health-care systems for rheumatology by Suneeta Mohanty, Prasant Kumar Pattnaik

“…Smart health care comprises e-health, m-health, electronic resource management, smart and intelligent home services, and medical devices. Wireless sensors, radio-frequency identification technology, Internet of things, and machine learning (ML) algorithms are the underlying technology to implement smart health care. …”
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Adopting an Improved Genetic Algorithm for Multi-Objective Service Composition Optimization in Smart Agriculture by Shalini Sharma, Bhupendra Kumar Pathak, Rajiv Kumar

“…Hence, to resolve this issue, agriculture is shifting to "smart agriculture," whose focus is to accelerate production using wireless sensor networks, cloud computing and IoT. …”
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A Survey of Adaptive and Real-Time Protocols Based on IEEE 802.15.4 by Feng Xia, Ruonan Hao, Yang Cao, Lei Xue

“…The IEEE 802.15.4 standard is a protocol that has been widely used in many applications exploiting wireless sensor networks (WSNs). However, it does not provide any means of differentiated services to improve the quality of service (QoS) for time-critical and delay-sensitive events. …”
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