Image Transmission Utilizing Amplitude Modulation in Rydberg Atomic Antenna by Peng Zhang, Shaoxin Yuan, Mingyong Jing, Jinpeng Yuan, Hao Zhang, Linjie Zhang

“…This study establishes an experimental groundwork for the utilization of Rydberg atomic antennas in ultra-wideband wireless communication and measurement.…”
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A Novel Pixel-Based Reconfigurable Antenna Applied in Fluid Antenna Systems With High Switching Speed by Jichen Zhang, Junhui Rao, Zan Li, Zhaoyang Ming, Chi-Yuk Chiu, Kai-Kit Wong, Kin-Fai Tong, Ross Murch

“…Fluid Antenna Systems (FASs) have recently been proposed for enhancing the performance of wireless communication. FAS have previously exploited mechanical movement or liquids to perform the required adaptation to the wireless environment. …”
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Research on low complexity decoding for SCMA based on serial strategies of variable node by Mingming JI, Jianhong ZHENG

“…Sparse code multiple access technology,as a competitive non orthogonal multiple access scheme for the fifth generation wireless communication network,has a broad application prospect.However,current SCMA uplink use the flooding scheme of message passing algorithm for decoding,both the detection complexity and convergence properties are not ideal.A serial message passing algorithm which changed the information updating strategy was proposed,which performed message processing and deliveried according to the order of the variable nodes.Each of variable node simultaneously performed the reception of the verification message and the transmission of the variable message.The theoretical and simulation results show that the proposed algorithm not only maintains good performance,but also has low decoding complexity.…”
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Offshore coverage optimization and application of TD-LTE networks by Junfeng LAN, Chongli NIU, Guohui YU

“…With the development of coastal fisheries and marine tourism,the demand for wireless coverage on offshore is becoming more and more urgent.Based on the analysis on the characteristics of the mobile communication business,the difficulties of offshore coverage planning,coverage optimization techniques for the actual application scenarios of coastal areas,a TD-LTE network coverage optimization method which made comprehensive use of the following technologies including special TD-LTE system parameter configuration,optimization of wireless communication link budget,optimization of the base station site planning and coverage enhancement technologies was proposed.The proposed optimization method was practically implemented in the Shangchuan Island and Xiachuan Island.The simulation results and measured data in the project field show that the implementation of TD-LTE network coverage optimization method has obviously improved the network coverage rate and communication service quality.…”
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A Novel Two-Terminal Reliability Analysis for MANET by Xibin Zhao, Zhiyang You, Hai Wan

“…Mobile ad hoc network (MANET) is a dynamic wireless communication network. Because of the dynamic and infrastructureless characteristics, MANET is vulnerable in reliability. …”
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CPW-Fed Slot Antenna for Wideband Applications by T. Shanmuganantham, K. Balamanikandan, S. Raghavan

“…This antenna can be part of various wireless communication systems.…”
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Particle filtering based semi-blind estimation for MIMO-OFDM time-varying channel by JING Yuan, YIN Fu-liang, ZENG Shuo

“…A semi-blind channel estimation method based on the particle filtering was proposed for the MIMO-OFDM wireless communication system.By optimizing the particles distribution locally,the traditional particle filtering algorithm was modified,and a local optimized particle filtering was proposed.This local optimized particle filtering can achieve the low MSE,and improve the precision of the MIMO-OFDM time-varying channel estimation.Since this method was per-formed in frequency domain,it was not necessary to know（or estimate） the length of the channel.Compared with exist-ing approaches,the proposed method was more robust to the non-gauss distribution noise and the detection performance is nearly optimal.The simulation results show the effectiveness of the proposed method.…”
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Analysis of the communication standardization and industry development of internet of vehicles by Lin LIN, Lu LI, Yuming GE

“…The internet of vehicles has become an important strategic direction for the development of the global automobile industry.China accelerates the top-level design,takes the research and deployment of a wireless communication network for vehicles based on C-V2X (now including LTE-V2X and NR-V2X) technology.And it is also required to promote the collaborative deployment of 5G and the internet of vehicles.On the basis of reviewing the latest standardization progress of 3GPP and CCSA in C-V2X,the technical standards problems found in the C-V2X“Four Layers” interoperability application demonstration were refined,and some reference suggestions were proposed for China to improve the C-V2X technical standards.…”
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Collaborative Heterogeneous Underlaying Cellular Networks:Fundamental Theories and Key Technologies by Mingxin Zhou, Chen Xu, Kun Yang, Yang Yu, Kaifei Zhao, Lingyang Song

“…The current study shows that D2D communication in collaborative heterogeneous underlaying cellular networks will become the key technology in the next-generation cellular communication systems because it can further improve the spectrum efficiency and system capacity in wireless communication networks.…”
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Micro-station sleeping algorithm based on coverage area priority in 5G network by Ziren WANG, Yi LI

“…With the maturity of 5G mobile communication technology and the rapid growth of the number of mobile terminals, the problem of intensive energy consumption of 5G wireless communication system base stations is prominent.A micro base station area hierarchical sleep algorithm was proposed.Considering the impact of micro base station load, inter station distance and inter layer cooperation on micro base station sleep, the transitions number of the micro base station in the overlapping coverage area between macro base stations is less, and the priority sleep operation has a good energy-saving effect.The simulation result shows that the energy-saving rate is 23%, which can adapt to different network sizes, and the energy-saving effect is better in large-scale networks.…”
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Measurement of Baseline and Orientation between Distributed Aerospace Platforms by Wen-Qin Wang

“…Distributed platforms play an important role in aerospace remote sensing, radar navigation, and wireless communication applications. However, besides the requirement of high accurate time and frequency synchronization for coherent signal processing, the baseline between the transmitting platform and receiving platform and the orientation of platform towards each other during data recording must be measured in real time. …”
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Author Correction: Classification of RTV-coated porcelain insulator condition under different profiles and levels of pollution by Ali Ahmed Salem, Samir Ahmed Al-Gailani, Abdulrahman Ahmed Ghaleb Amer, Mohammad Alsharef, Mohit Bajaj, Ievgen Zaitsev, Razali Ngah, Sherif S. M. Ghoneim

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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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Research on high security G function algorithm by Rui CHEN, Zan LI, Jia SHI, Lei GUAN

“…The differential frequency hopping (DFH) overcomes the limitation of frequency hopping and improves the ability to resist tracking interference.The G function determines the DFH sequence and directly affects the performance of DFH communication systems.However,with the complication of wireless communication system such as large capacity DFH network,which poses huge challenges to the use of the number theory based and chaos theory assisted sequence.As a result,in order to improve the security of the system,the novel G function construction was proposed with the aid of hybrid encryption algorithm and the security of hybrid algorithm was analyzed.Moreover,the equivalence principle of G function algorithm and the encryption algorithm was proved.The simulation results show that the DFH sequence generated by the new G function has excellent performance and the performance of the DFH systems is improved greatly.…”
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Intelligent transmit power control algorithm for the multi-user interference of wireless network by Xianchao ZHANG, Yao ZHAO, Haijun YE, Rui FAN

“…To deal with the inter-user interference problem in wireless networks, an intelligent transmit power control scheme was proposed to manage the inter-user interference and guarantee multiple users' quality of service.Firstly, considering the complex dynamic wireless channel environment, a transmit power control model that aims to maximize the weighted sum-rate of the wireless communication system was established.Then, an intelligent power control algorithm based on the actor-critic framework in deep reinforcement learning was designed to shorten the power control decision time.Simulation results show that the proposed algorithm converges quickly, and when there are 10 pairs transceivers, the computation time consumed by the intelligent power control method is only a quarter of the time consumed by the traditional optimal algorithm.…”
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Self-attention mechanism-based CSI eigenvector feedback for massive MIMO by Bei YANG, Xin LIANG, Hang YIN, Zheng JIANG, Xiaoming SHE

“…Massive multiple-input multiple-output (MIMO) system can provide satisfying gain of spectrum efficiency for 5G and future wireless communication systems.In frequency-division duplex (FDD) mode, downlink channel state information (CSI) needs to be accurately fed back to the base station side to obtain this gain.To improve the feedback accuracy of downlink CSI eigenvector, a self-attention mechanism-based CSI feedback method named SA-CsiNet was proposed.SA-CsiNet respectively deployed self-attention modules at the encoder and the decoder to achieve feature extraction and reconstruction of CSI.Experimental results show that compared with codebook-based and conventional deep learning-based CSI feedback approaches, SA-CsiNet provides higher reconstruction accuracy of CSI.…”
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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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Error exponent for TAS/MRC fading channel by Changshui LI

“…Using Meijer-G function,exact expression for the random coding error exponent,ergodic capacity,cutoff rate,expurgated exponent of TAS/MRC Nakagami-m fading channel were derived.Numerical results show that the random coding error exponent is related to channel fading coefficient,coding rate,the number of transmitting and receiving antennas,and signal symbol period.With the coding rate,the number of the receiving and transmitting antennas and the average signal to noise ratio increasing,the RCEE of the system will become larger and the BER performance of the system will be better.For a given decoding error probability of a wireless communication system,necessary coding length,number of antennas,channel coherence time,and spatial fading correlation could be estimated by computing the random coding error exponent.…”
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Research Status of CPM for Satellite-Terrestrial Integrated Network by Zihao PAN, Chen XIE, Heng WANG, Daoxing GUO

“…Around the vision of ＆quot;full coverage＆quot; of the new generation of mobile communication system (6G), satelliteterrestrial integration, as one of the key technologies, is the development direction of the future wireless communication system.The construction of satellite-terrestrial integration network and deep integration need reasonable waveforms at physical layer.In view of the problems of transmission in satellite-terrestrial integration, the signifi cant advantages and practicability of continuous phase modulation (CPM) signal in spectral effi ciency and energy effi ciency were analyzed.The research progress of CPM signal at receiver in mobile communication system from the time and frequency domain were discussed, which provided support for CPM related research in satellite-terrestrial integration in the future.…”
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Iterative multistage adaptive Rake receiver for CDMA wireless system by YE Li-bing, ZHOU Yuan-ping, XIE Ning

“…An iterative multistage （IM） adaptive Rake receiver for CDMA wireless communication systems was proposed. In comparison to other algorithms, such as LMMSE algorithm, the IM system has the similar complexity, but it can provide a better performance. …”
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