Survey of the context-aware location privacy-preserving techniques by Dian-hui MAO, Jian CAO, Qiang CAI, Hai-sheng LI

“…With the advances in wireless communication technology and smart mobile devices, location-based services (LBS) providing personalized services based on users' location information, have been widely applied in many areas. …”
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Research and practice of 5G edge cloud based port unified communication scheme by Yan NING, Lei ZHANG, Xiaoyuan LU

“…With the advantages of distribution, flexible networking, rapid deployment, and local data offloading, 5G edge cloud has a wide range of application prospects in the vertical industrial field such as ports, and also puts forward certain requirements for the realization of unified communications in ports.On the basis of studying the unified communication architecture of ports based on 5G edge cloud, a functional framework of the 5G edge cloud that realized a comprehensive perception of various elements of the port site and supported the transformation of automated services was proposed.The functional framework could be well applied to the unified hosting of wired and wireless network integration in port scenarios, and could be used as the network infrastructure of unified communication of port networks in the current complex environment.Finally, the scheme was applied to a port terminal for practical verification.…”
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Using Sensor Network in Motion Detection Based on Deep Full Convolutional Network Model by Qichang Xu

“…First, a low-power motion detection wireless sensor network node is designed to obtain motion detection information in real time. …”
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A Spread Spectrum Sequence for MC-CDMA System by Zhicheng Zhang, Xiaona Huang, Li Xiong

“…The MC-CDMA system takes the advantages of the OFDM system and the CDMA system.The MC-CDMA system is a kind of wireless communication aroused an ongoing and growing research interests,which has the characteristics of high bit transmission rate,high bandwidth efficiency,anti-jamming,and a large system capacity.Since the MC-CDMA system includes the multi-carrier modulation,it is difficult to design a spread spectrum sequence performing not only a high level of self-correlation and cross-correlation but also a low peak-to-average power ratio in the MC-CDMA system.To solve this problem,a spread spectrum sequence which was modulated by Golay code and m sequence was proposed.The spread spectrum sequence proposed owned a good performance in self-correlation,cross-correlation and peak-to-average power ratio.The simulation results show the effectiveness and the superiority of the proposed spread spectrum sequence.…”
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Research on 5G high-precision indoor positioning technology for smart parks by Baoyou WANG, Jingtao YANG, Saibin YAO, Haina YE, Zhihui WANG, Qiyuan ZHANG, Junfeng FU, Taishi JIN

“…The 5G cellular network not only provides wireless communication capabilities for terminals but also offers positioning functionalities.Firstly, the 3GPP 5G positioning technology was briefly outlined, followed by the proposal of the 5G indoor positioning technology road-map.The cloud-edge collaborative integrated positioning architecture, the 5G+X fusion positioning solution, as well as the 5G positioning solution for smart parks were included, with a detailed analysis of the architecture and process.These positioning solutions seamlessly addressed the issue of locating people or objects in areas where GNSS signals cannot reach, which could meet the positioning accuracy and timeliness requirements in different scenarios.The technology solution has been applied in the industry with meter-level positioning accuracy and second-level timeliness, which has been well evaluated by customers.…”
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Pattern Reconfigurable Wideband Stacked Microstrip Patch Antenna for 60 GHz Band by Alexander Bondarik, Daniel Sjöberg

“…The antenna is designed for 60 GHz central frequency and can be used in high speed wireless communication systems.…”
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Constant modulus algorithm for blind equalization under impulsive noise environments by GUO Ying1, QIU Tian-shuang1, TANG Hong1, PARK Yong-wan2

“…The presence of α stable distributed ambient channel noise in wireless systems can degrade the per-formance of existing constamt modulus（CM） equalizers.The problem of blind equalization in noisy communication channels was investigated by addressing the negative effects of heavy-tailed noise to the original constant modulus algorithm based on a stochastic gradient descent（SGD-CMA）.Two modified algorithms were proposed.The first is robust CM algorithm based on SGD（SGD-RCMA） and the second is robust CM based on recursive least square（RLS-RCMA） novel methods are robust under both Gaussian and α stable distributed ambient noise environments.And compared to SGD-RCMA method,the RLS-RCMA method has a significantly faster convergence rate and more powerful ISI impressing ability.…”
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Testing and Analysis on LTE Base Station Energy Efficiency by Shaoying Li, Zhanhai Zhuang, Weibin Ni

“…With the development of LTE network construction, the number of LTE base stations, users and the network traffic are increasing, and energy consumption of network is more prominent, due to the wireless access network energy consumption accounts for over 80% of energy consumption, wherein the base station energy costs accounted for the largest base of operations to become one of the most important expenses for operators. …”
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Research on 4G/5G voice quality optimization based on data mining and geographic visualization by Jian HU, Lei SUN, Yiyan YIN, Xiaokang YANG, Jingui BAI, Yejiang ZHANG

“…Traditional voice quality optimization relies on field test, case accumulation and expert experience.It is costly and inefficient to analyze problems by manual test.Through the application of data mining, decision tree machine learning algorithm, geographic visualization and other technologies, a voice experience optimization visualization platform based on big data analysis was developed, which could effectively identify the laws in voice big data, and realize the functions of correlation analysis between user voice experience index and wireless network performance index, intelligent recognition of degradation threshold and image analysis of poor quality areas.It is conducive to reduce the skill threshold of network engineers, improve the work efficiency of network optimization, save network operation and maintenance costs, and provide accurate and effective voice experience improvement solutions for the industry.…”
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Massive MIMO LEO Satellite Communications System by Kexin LI, Li YOU, Xiqi GAO

“…Extending massive multiple-input multiple-output (MIMO) technique to low earth orbit (LEO) satellite communication systems enables satellites to implement fl exible beamforming, which can make full use of the spatial degrees of freedom of massive MIMO and signifi cantly improve the spectral effi ciency and energy effi ciency of LEO satellite communication systems.Several related issues in massive MIMO-based LEO satellite communication systems were studied.The characteristics of massive MIMO LEO satellite channels were analyzed.The important diff erences between them and terrestrial wireless channels were revealed.With the aim of addressing the problems on channel information acquisition, multi-user transmission and user scheduling in massive MIMO LEO satellite communication, the main difficulties faced by the current work were discussed, and how to use the characteristics of massive MIMO LEO satellite channels to design tailored solutions with low implement complexity was conceived.…”
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On the Experimental Investigation of Bone Fracture Recovery Process Using an Ultra-Wideband Planar Monopole Antenna by Shaik Rizwan, Kanaparthi V. Phani Kumar, Sandeep Kumar Palaniswamy

“…In addition, a microcontroller with a wireless communication module is developed to monitor the data in an Android application. …”
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A Lightweight Neighbor-Info-Based Routing Protocol for No-Base-Station Taxi-Call System by Xudong Zhu, Jinhang Wang, Yunchao Chen

“…Since the quick topology change and short connection duration, the VANET has had unstable routing and wireless signal quality. This paper proposes a kind of lightweight routing protocol-LNIB for call system without base station, which is applicable to the urban taxis. …”
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A survey of resource allocation in non-orthogonalmultiple access systems by Zhengqiang WANG, Qu CHENG, Zifu FAN, Xiaoyu WAN

“…Non-orthogonalmultiple access(NOMA)is an important candidate technology of the fifth generation(5G)wireless network,which canmeet the low latency,low power consumption,high reliability,high throughput,wide coverage requirements of the next generationmobile communication systems.NOMA utilizes superposition coding at the transmitter and successive interference cancellation at the receiveRto allow several users’datamultiplexing in the same resource block.It improves the spectrum efficiency compared with the traditional orthogonalmultiple access.The research status of resource allocation of NOMA systems was summarized including single-carrier NOMA resource allocation,multi-carrier NOMA resource allocation,cooperative NOMA relay resource allocation,and cooperative NOMA resource allocation under hardware impairment conditions.Finally,themain problems in the current study were summarized and the research challenges and some future research directions of NOMA resource allocation technology were discussed.…”
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Capacity of fully correlated MIMO system using character expansion of groups by Ejaz Khan, Conor Heneghan

“…In most previous works presented on MIMO wireless structures, Rayleigh fading conditions were considered. …”
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Fabrication of CPW-Fed Fractal Antenna for UWB Applications with Omni-Directional Patterns by Tohid Sedghi, Mahdi Jalali, Tohid Aribi

“…The characteristics of the proposed antenna are suitable for UWB wireless communication requiring low profile antennas.…”
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Power Link Optimization for a Neurostimulator in Nasal Cavity by Seunghyun Lee, Jonghoek Kim, Sanghoek Kim

“…This paper examines system optimization for wirelessly powering a small implant embedded in tissue. …”
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Architecture evolution and bandwidth analysis of 5G bearer networks by Chunhua ZHAO

“…The influence of 5G mobile network architecture evolution on bearer network was demonstrated.A comparison of fiber requirement between 5G front-haul network and fixed broadband access network was proposed.The various bearer schemes in fiber shortage area were introduced.The characteristics of various device networking solution were summarized.The influence on bearer network architecture and bandwidth was analyzed when 5G core network moved down to the metro core DC and metro edge DC.The bandwidth calculation model on mobile metro mid-haul and back-haul network was presented.Bandwidth calculations on each layer of the networks were provided.Calculation results show that compared with 4G network,bandwidth requirements on bearer back-haul network are greatly increased as the bandwidth of the wireless side of the 5G network increases.The growth trend of the metro back-haul and export bandwidth is slowed down with the core network moving down and the deployment of CDN and MEC.…”
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Research and implementation of pedestrian detection technology based on smart road by Yunpeng WANG, Quyuan LUO, Changle LI, Guoqiang MAO

“…Aiming at the problem of single detection function,higher cost and lower detection efficiency and reliability for current pedestrian detection,which was mostly realized by vehicle mounted equipment,a pedestrian detection technology based on smart road was proposed.By deploying a large number of low-cost,highly reliable Internet of things devices on the road,real-time detection of pedestrian information in the surrounding environment was realized.Early warning information can be provided to vehicles with very low latency wireless communication technology,which can improve road safety.At present,the prototype of the pedestrian detection system has been developed,and verified by field test,the pedestrian detection system can detect pedestrians effectively.Within the detection range of 4 meters,the accuracy of single device can reach 80%,and the accuracy of multiple cross-deployed devices can reach 100%.…”
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5G new radio design:why/how to extend/innovate from LTE by Hui TONG

“…Driven by the 5G visions including “wireless infrastructure to connect the world”, ITU has defined the three main usage scenarios of 5G: eMBB, mMTC, and uRLLC, and the consequent requirements (performance metrics) are defined as well. …”
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Research on 5G base station energy saving system based on DCNN-LSTM load prediction algorithm by Jianbin WANG, Shuchun WANG, Shangjin LIAO, Shuyuan SHI

“…With the rapid construction of the 5G wireless communication network, the energy consumption pressure of operators, and even the overall communication industry, is simultaneously highlighted.Achieving sustainable development of the industry through energy conservation and consumption reduction has become a new research direction for the current 5G network development.Taking the PRB rate as the load evaluation index, LSTM model was improved by using DCNN to extract the depth feature of the cell’s indicators.A set of DCNN-LSTM deep learning model that could predict the future value of PRB rate was proposed.On the basis of the improved algorithm, the network topology of the current 5G access network was optimized.An additional network element and its working system were designed.An intelligent energy-saving system, which ensured the network experience, of 5G base stations was realized.…”
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