Persistent homology based topological analysis on the gestalt patterns during human brain cognition process by Zaisheng LIU, Fei NI, Rongpeng LI, Honggang ZHANG, Chang LIU, Jiefang ZHANG, Songyun XIE

“…The integrated development of information communication technology and neuroscience heralds the possibility and great potential of brain-to-brain wireless communication(B2BC).The physiologically meaningful features of brain responses were extracted to different contour and shape in images in Gestalt cognitive tests by combining persistent homology analysis with electroencephalogram (EEG).The experimental results show that more brain regions in the frontal lobe were involved when the subject perceives the random and disordered combination of images compared to the ordered Gestalt images.Meanwhile, the persistence entropy of EEG data evoked by random sequence diagram (RSD) was observed to be significantly different from that by the ordered Gestalt images(GST) in several frequency bands, which indicated that human cognition of shapes and contours, such as a preliminary advanced cognition process, could be separated to some extent through topological analysis.This method can digitize the neural signals while preserving the whole and local features of the original signals.In general, the cognitively related neural correlates by persistent homology features of EEG signal are revaluated and quantified, which provides an approach to realize the digitization of neural signals in brain-to-brain wireless communication.…”
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Novel Side Information Generation Algorithm of Multiview Distributed Video Coding for Multimedia Sensor Networks by Fu Xiao, Jinkai Liu, Jian Guo, Linfeng Liu

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Weighted Sum Secrecy Rate Optimization for Cooperative Double-IRS-Assisted Multiuser Network by Shaochuan Yang, Kaizhi Huang, Hehao Niu, Yi Wang, Zheng Chu, Gaojie Chen, Zhen Li

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Toward secure and accountable data transmission in Narrow Band Internet of Things based on blockchain by Hanshu Hong, Bing Hu, Zhixin Sun

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Exploring a Design of Landslide Monitoring System by Rahat Khan, Suhail Yousaf, Abdul Haseeb, Muhammad Irfan Uddin

“…A challenge in landslide monitoring through WSN is that each sensed data item might be critical whereas the underlying wireless communication is often unreliable. In case of landslides, the terrains have irregular shapes, providing harsh conditions for wireless communication thereby more data loss may be expected. …”
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Low-Cost Printed Flexible Antenna by Using an Office Printer for Conformal Applications by Kashif Nisar Paracha, Sharul Kamal Abdul Rahim, Hassan Tariq Chattha, Saqer Saleh Aljaafreh, Sabih ur Rehman, Yew Chiong Lo

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Guest editorial: Advanced signal processing for integration of radar and communication (IRC) by Bin Liao, Wei Liu, Ziyang Cheng, Tianyao Huang

“…For instance, radar was mainly employed for sensing (target detection, localization, recognition, imaging, etc.) in the military field, while wireless communication was mainly for information delivery. …”
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Intelligent Transportation System Protocol Interoperability Evaluation by Jonas Vogt, Hans D. Schotten, Horst Wieker

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Anonymous Authentication and Key Agreement Scheme Combining the Group Key for Vehicular Ad Hoc Networks by Mei Sun, Yuyan Guo, Dongbing Zhang, MingMing Jiang

“…Vehicular ad hoc network (VANET) is a multihop mobile wireless communication network that can realize many vehicle-related applications through multitop communication. …”
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Transparent Graphene-Based RIS for 6G Communications in the THz Spectrum by I. Marasco, C. Cantore, G. V. Bianco, G. Bruno, A. D'Orazio, G. Magno

“…In the quest for sixth-generation wireless communication technology (6G), Terahertz waves represent a key technology due to their distinct advantages over microwaves and infrared radiation. …”
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Novel Rake receiver structure for ultra wideband system based on antenna diversity by QI Li-na, GAN Zong-liang, ZHU Hong-bo

“…A novel receiver structure for TH-UWB wireless communication system was proposed. The improved receiver, combining the antenna diversity with Rake receiver, could enhance the ability to suppress the multi-user interference and multipath fading. …”
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Research on estimating effective order of radio channel in OFDM systems by LI Guo-song, ZHOU Zheng-ou

“…In wireless communication system based on OFDM,the character of LS algorithm’s result in time-domain was paid much attention to.At the same time,the character of Channel Impulse Response（CIR）in time-domain was taken into account.It was proposed to detect energy of CIR’s tap of LS algorithm’s result in time-domain and search the effective order of radio channel conversely.By theoretical analyses and computer simulation,it is indicated that this method shows good performance in estimating effective order of radio channel.…”
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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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A Miniaturized Planar Monopole Antenna Based on a Coupling Structure for Compact Mobile Internet of Things (IoT) and Electric Vehicles (EVs) Device Applications in 5G, LTE, WLAN, W... by Ming-An Chung, Chih-Wei Yang

“…There is an urgent need for a complete frequency-continuous and large bandwidth design in the current wireless communication design to achieve a multimode, multifrequency, physical phenomenon design with large bandwidth and continuous operating frequency. …”
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End-Edge Collaborative Lightweight Secure Federated Learning for Anomaly Detection of Wireless Industrial Control Systems by Chi Xu, Xinyi Du, Lin Li, Xinchun Li, Haibin Yu

“…Then, to reduce the wireless communication cost for parameter exchange and edge federal learning, we propose a dynamic parameter pruning algorithm by evaluating the contribution of each parameter based on the information entropy gain. …”
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Least Square Estimation-Based Different Fast Fading Channel Models in MIMO-OFDM Systems by Walaa Hussein, Kamil Audah, N. K. Noordin, Habib Kraiem, Aymen Flah, Mohd Fadlee, Alyani Ismail

“…In cellular wireless communication systems, channel estimation (CE) plays a pivotal role as a crucial technique applied in orthogonal frequency division multiplexing (OFDM) modulation. …”
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Application of WiMAX technology in difficult geographical conditions: Perspectives for mountain environment by Rustamova D. F., Suleymanov N. M., Gafarov G. A., Bakhshaliyeva S. V., Marasulov M., Rizaeva Sh.

“…WiMAX (Worldwide Interoperability for Microwave Access) is a telecommunications technology designed to provide universal wireless communication over long distances for a wide range of devices (from workstations and notebook computers to mobile phones). …”
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A New Geometry of Multi-band MIMO Antenna for 5G and 6G Systems by Karrar Shakir Muttair, Oras Ahmed Shareef, Hazeem Baqir Taher, Faiz Arith

“… The demand for high-efficiency, small-sized ultrawide-band (UWB) antennas has risen due to the need for fast wireless communication systems. In this manuscript, we propose a novel geometry for a 4-port multi-in multi-out (MIMO) antenna with an L-shaped structure that solves the limitations of current designs in UWB applications. …”
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Low-complexity sparse channel estimation for massive MIMO systems by Xin FANG, Yunju LIU, Haiyan CAO, Peng PAN

“…Due to the high computational complexity of massive MIMO system,a low-complexity sparse channel estimation algorithm was proposed utilizing the inherent sparsity of the wireless communication channel to improve the estimation performance.The proposed algorithm separated channel tap from noise space based on the traditional discrete Fourier transform by adopting integral separation algorithm.This channel estimation algorithm need only calculate the channel tap,thus markedly reducing complexity of the algorithm.Numerical simulations show that proposed algorithm can approach to the performance of the minimum mean-square error estimator while maintaining lower complexity.…”
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System Architecture and Technology Evolutions in Cloud Radio Access Networks by Shi Yan, Wenbo Wang

“…Cloud radio access network（C-RAN）has been proposed as one of the most promising solutions to meet the service requirements of the fifth generation（5G）wireless communication systems. The published achievements indicate that C-RAN has many advantages, which can improve the spectrum efficiency and energy efficiency simultaneously. …”
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