Architecture of a heterogeneous marine internet of things for intelligent offshore engineering by Zhenhua FU, Jie LI, Fei JI, Hua YU

“…With the development of the offshore engineering towards intelligence and informatization, the safety and environmental monitoring technology is demanding for offshore operating platforms.A heterogeneous marine IoT architecture for the intelligent offshore engineering was proposed.The network was based on underwater acoustic communication technology, marine radio wireless communication, intelligent gateway and cloud platform to realize remote and online monitoring offshore engineering and platforms.The main modules, and some of the key technologies and challenges involvedin the network were introduced.The network architecture can provide a reference for the realization of an intelligent offshore engineering equipment and platforms.…”
Get full text

Robust Distributed Reprogramming Protocol of Wireless Sensor Networks for Healthcare Systems by Kuo-Yu Tsai

“…With the development of the wireless communication technologies, the wireless sensor networks (WSNs for short) are considered as one of the key research areas in healthcare systems. …”
Get full text

Key technologies and new challenges on body area networks by Xiaolin FANG, Junzhou LUO

“…As the rapid development of sensing,low-power integrated circuit and wireless communication techniques,body area network becomes a new technology to monitor human health,which provides a new solution for information medical treatment.The key technologies of body area network was firstly introduced,including energy consumption,data transmission,security and privacy and human health data processing.Finally,a series of new challenges in body area network systems was proposed.…”
Get full text

The role of wireless sensor networks in the modern landscape: a concise examination by Salwa El-Morsy

“…Wireless sensor networks are fast process of connection in part such as agriculture, healthcare, environmental monitoring, security, and manufacturing and also it thesaurus and measure physical signals and it also have wireless communication. Wireless sensors also can track the appliances; it is an automatic control of devices. …”
Get full text

On the coding rate for differential modulation and detections by Ya-chong XU, Dong-wei HU

“…Differential demodulation is an important method of solving the information transmission which is used in the high dynamic condition of the wireless communication.The coding rate for differential modulation and detec-tions neither be too high,nor be too low.To find the optimal coding rate,the Shannon limit of error free transmis-sions with different rates for differential BPSK and differential QPSK were derived.Thereafter,the optimal coding rate was obtained from the view point of information theory.Convolutional codes and Turbo codes with different rates were employed,and simulations were conducted for the verification of the result.…”
Get full text

A model of group mobility management based on user behavior prediction by Xiaoyong LIN, Yang YU, Zhengkun MI

“…Mobility management (MM) is a vital part of future 5G mobile communication.How to balance the paging loads and reduce the location update costs is a key topic in wireless communication research.A novel model of group mobility management based on user behavior prediction was proposed,in which users with the similar moving characteristics could be under unified management,thereby repeated costs from the traditional model of single mobility management (SMM) could be reduced.Simulation results show that GMM can get better running cost than SMM.…”
Get full text

A survey of semantic applications in communications by Yingzi XU, Yuan LIU, Mengran SHI, Shujun HAN, Chen DONG, Bizhu WANG

“…With the development of artificial intelligence technology and wireless communication technology, the future communication networks for all things intelligent connected uses semantic segmentation, semantic network and other technologies more and more frequently, and the semantic information-based technologies are applied to various fields.Semantic communication is a communication method for multi-agent interaction.By extracting the requirements and information characteristics of agents, coding and transmission, the accurate transmission of semantics from agents can be realized.Firstly, the development of semantic related technology in artificial intelligence was analyzed.And then the application of semantics in communication was summarized.Finally, the application of semantic information in other fields was analyzed, and the development trend of semantics in other fields was discussed.…”
Get full text

Research on beam management of non-coaxial OAM communication system by Feng ZHENG, Gaoming DUAN, Liangang CHI

“…As a new modulated degree of freedom, orbital angular momentum (OAM) could greatly improve the spectrum utilization of wireless communication.However, the uniform circular array (UCA)-based OAM communication system requires the transceiver array to be static and perfectly aligned, which makes it difficult for OAM to be practically applied.A beam management method based on OAM was proposed, which determined the best beam matching by scanning the beam of receiver and receiver, and the matched beam was used to communicate.Simulation results show that the proposed scheme could effectively reduce the system performance degradation caused by non-coaxial of receiver and transmitter arrays.…”
Get full text

Cryptography algorithm for wireless channel of CBTC system by WANG Chao1, LIU Li-li1, NIU Zhi-hua2, SHI Xiang-yong1, ZHANG Huan-guo3

“…As to the disadvantages of RC4 which was used for CBTC system,a new cryptography algorithm based on Montgomery-form ECC was brought forward.Compared with the traditional Montgomery elliptic curve,the improved algorithm would resume the value of y-coordinate with more security.In addition,compared with the traditional ECC,it has faster computing speed and can effectively resist the timing attack and energy attack.The new Montgomery-form ECC algorithm has accelerated current ECC encoding speed and would make great improvement to the implementation of ECC in CBTC and other wireless communication.…”
Get full text

MAC protocols in ultra-wide band system by YUE Ran1, ZHANG Qin-yu2, ZHANG Nai-tong1, ZHENG Shi2

“…Recently,the ultra-wide band （UWB）-based technique is focused on more deeply along with the design of MAC （media access control） for its advantages.Comparing with the conventional wireless communication system,the UWB system has its unique characteristics,higher speed rate,lower PSD （power spectrum density）,etc.It is therefore necessary to propose advanced MAC protocols for matching the requirements of the system.In this study,the performance of various types of MAC protocols based on UWB system is investigated.The physical structures for different MAC protocols are compared.Some special demands from UWB for MAC are analyzed.The advanced design for the MAC protocols in UWB is proposed.It may provide the implementation base for future MAC protocols.…”
Get full text

Survey of application of machine learning in wireless channel modeling by Liu LIU, Jianhua ZHANG, Yuanyuan FAN, Li YU, Jiachi ZHANG

“…Channel characterization is primary to the design of the wireless communication system.The conventional channel characterization method cannot learn the law of certain types of channels by itself, which limits its application in several special scenarios, such as Internet of things, millimeter wave communication and Internet of vehicles.Machine learning was able to process the big data and establish the model.Based on this, the cooperation between the machine learning and channel characterization was investigated.The channel multipath clustering, parameter estimation, model construction and wireless channel scene recognition were discussed, and recent significant research results in this field were provided.Finally, the future direction of the machine learning in wireless channel modeling was proposed.…”
Get full text

Optimal Relay Selection Strategy in Cognitive Cooperative Relaying Network by Yinshan Liu, Xiaofeng Zhong, Jing Wang

“…Cognitive cooperative relaying communication significantly improves the performance of wireless communication networks and spectral efficiency.Optimal relay selection problem,which characterize the desired tradeoff between the probing cost for establishing cooperative transmission and hence higher reward via cooperative diversity,is a hard issue when the number of relay nodes is large.Optimal relay selection strategy was established by using optimal stopping theory with a finite horizon.Furthermore,a pure SNR（signal-to-noise ratio）threshold structure was exhibited.Theoretical analysis and numerical results indicate that proposed optimal relay selection strategy is effective in reducing the number of probing candidate relays and improving the reward of source.…”
Get full text

Research on Basic Theory and Key Technology of Cognitive Radio Network by Ping Zhang, Jianwu Li, Zhiyong Feng, Qixun Zhang

“…Cognitive radio network（CRN）is a cognitive process of network，which makes planning，decision and response for network state through learning and analysis of the network environment.CRN is one of the effective ways to solve the limited network capacity，and to satisfy the national strategic demand on the frequency spectrum efficient-utilization and the integration of heterogeneous networks.As the key technology of 5G，CRN indicates the direction for the future development of wireless communication network.The system architecture for cognitive radio networks，the basic theory research，the key technologies of implementation were introduced，and the demonstration platform of CRN was presented.…”
Get full text

Coordinated beamforming algorithm assisted by receive beamforming vector estimation by Ying HUANG, Gang-ming LV, Shi-hua ZHU

“…A distributed coordinated beamforming optimization scheme with the assistance of receive beamformer esti-mation was proposed for downlink cellular wireless communication systems. By sharing a small amount of information among cooperated base stations(BSs), the proposed algorithm estimates the receive vectors of related users at the BSs based on MVDR criterion, which are then utilized to optimize the design of transmit beamforming vectors. …”
Get full text

Performance of constant envelope OFDM system with nonlinear power amplifier by Qingbo WANG

“…Orthogonal frequency division multiplexing technology is widely used in wireless communication system due to its high spectral efficiency and good resistance ability to frequency selective fading.But it has high peak-to-average power ratio.Therefore,OFDM system needs large input power back-off to avoid signal distortion when using nonlinear power amplifier.In order to study the performance of the system under the condition of nonlinear power amplifier,the implementation of constant envelope OFDM was analyzed.Taking bit error rate as an index,the performance comparison between CE-OFDM system and OFDM system using traditional iterative limiting filter PAPR suppression technology were given under additive white Gaussian noise channel and multipath fading channel.…”
Get full text

Channel modeling and performance test method for 5G by Guiming WEI, Xiang ZHANG, Yuhang GUO, Shangbing QIAO

“…With the rapid development of 5G wireless communication system, the throughput of 5G gNB and user equipment (UE) in the practical field environment is of great important.How to generate the accurate model in lab, which can represent the propogation condition in the field, has drawn great interests from both the academic and industrial communities.The channel modeling methods of 4G and 5G were introduced, and for 5G UE testing, the advantages of the multi-input multi-output (MIMO) and over-the-air (OTA) performance test solution were showed.Then, a detailed description of the OTA channel modeling principle and throughput simulation results were given in order to provide reference for related work.…”
Get full text

Research on the Networking Strategy in Indoor Visible Light Communication by Yang Liu, Hua Zhao, Kaizhi Huang, Xinsheng Ji

“…Therefore, the technical features of VLC and the typical network architecture were discussed, according to the evolution and development trend of the wireless communication system, some networking strategies for the indoor visible light networking were proposed, such as hierarchical cell coverage, control plane and user plane separation, distributed model and client-server model coexist in strategy. …”
Get full text

Advances in the Statistical Characterization of Fading: From 2005 to Present by José F. Paris

“…This review paper presents some of the most significant advances in statistical characterization of wireless communication fading. We will focus on the fundamental statistical characterizations of the fading distributions in terms of the probability density function (PDF), the cumulative density function (CDF), and the moment generating function (MGF). …”
Get full text

Les ordres du spectre : la science-fiction numérique et le présent corrigé by Rebekah Sheldon

“…This article examines the aesthetics of what Anthony Dunne calls “Hertzian space” or the electromagnetic flows that enable wireless communication devices through comparative attention to three contemporary transmedia universes: the BBC’s Sherlock, SyFy’s Alphas, and Fox’s Touch. …”
Get full text

Penerapan Mekanisme Komunikasi Multi-hop pada Bluetooth Low Energy by Agung Setia Budi, Muhammad Hanif Azhar Efendi, Adhitya Bhawiyuga, Mochammad Hannats Hanafi Ichsan

“…One of that technology is wireless communication. There are so many wirelees communication technologies arround us nowadays, such as Wi-Fi, LoRa, Zigbee,and Bluetooth. …”
Get full text