Channel Estimation in DCT-Based OFDM by Yulin Wang, Gengxin Zhang, Zhidong Xie, Jing Hu

“…We also study a compressed sensing (CS) based channel estimation, which takes the sparse property of wireless channel into account. Simulation results have shown that the CS based channel estimation is expected to have better performance than LS. …”
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Massive access technology in 6G cellular Internet of things network by Feiyan TIAN, Xiaoming CHEN, Caijun ZHONG, Zhaoyang ZHANG

“…To realize Internet of everything (IoE),the 6G cellular Internet of things (IoT) network need to provide wireless access with low power,massive connectivity and wide coverage.Through the analysis and research on the massive access technology in 6G cellular IoT network,especially in combination with the sporadic characteristics of IoT applications,a new access framework based on the grant-free random access protocol was designed to facilitate efficient massive access with limited spectrum resources.The proposed framework consisted of two phases.One was joint activity detection and channel estimation.The other was data transmission,which was divided into two categories,uplink data transmission and downlink data transmission,according to the different directions of data transmission.Due to the uncertainty of channel state information at the base station under the massive grant-free random access and considering the low power demand of 6G IoT devices,two robust uplink and downlink access algorithms were designed by maximizing the system energy efficiency.Extensive simulation results validate the effectiveness and robustness of the proposed algorithm.…”
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One-Time Broadcast Encryption Schemes in Distributed Sensor Networks by Pawel Szalachowski, Zbigniew Kotulski

“…It has many potential applications in distributed wireless sensor networks (WSNs) but perfect deploying of that method is very difficult. …”
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Integrated Miniature Multiband Antenna Designed for WWD and SAR Assessment for Human Exposure by Brahim Fady, Jaouad Terhzaz, Abdelwahed Tribak, Fatima Riouch

“…The article introduces a new, low-cost, integrated, multiband antenna design intended for wristbands and wearable wireless devices (WWD). With a miniaturized planar square-shape sizing 29 × 29 mm2, the antenna can fit easily inside WWDs. …”
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Survey on data heterogeneity problems and personalization based solutions of federated learning in Internet of vehicles by LIU Miao, LIN Wanru, WANG Qin, GUI Guan

“…Finally, the challenges encountered by PFL in IoV were outlined, along with the future research prospection related to advanced technologies on wireless communications.…”
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Optimization and Performance Enhancement of a Miniaturized Rectangular Patch Antenna with Slotted Ground Plane Using Ant Colony Algorithm by Bahlaouane Ibtissam, Belhabib Abdelfettah, Ibnyaich Saida, Zeroual Abdelouhab

“…The proposed antenna, with dimension of 37.6×33.04×1.6 mm3, will be useful for wireless applications such as Wi-Fi and Bluetooth.…”
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Distributed H∞ Control of AVs Interacting by Uncertain and Switching Topology in a Platoon by Feng Gao, Dongfang Dang, Qiuxia Hu, Yingdong He

“…To overcome the challenges arising from the weakness of wireless communication, this paper presents a distributed H∞ control method for multi-AVs connected by an uncertain and switching topology in a platoon. …”
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Channel Estimation Optimization Model in Internet of Things Based on MIMO/OFDM with Deep Extended Kalman Filter by Van Tinh Shi, Dong Ren Nhg

“…Channel estimation plays a vital role in the performance of wireless communication systems. However, apart from the usual OFDM modes, there are also orthogonal conditions for modulationbased multi-channel systems, which make channel estimation on networks such as the Internet of Things (IoT) more complex. …”
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Cooperative MAC protocol based on network coding and space-time coding by Qian-bin CHEN, Jian LIU, Yong FENG, Lun TANG

“…Aiming at the problems in wireless ad hoc networks,such as relays’ low efficiency caused by cooperation and difficult to meet the different QoS requirements,a co e MAC protocol was proposed based on the combination of network coding and space-time coding(NSTCMAC).Based on NSTCMAC protocol with the combination of Network coding and space-time coding techniques,a kind of cooperative MAC transmission mechanism that could distinguish the type of DATA packet was designed in order to meet the QoS requirements of different types of transm Further more,cooperative transmission mechanism and its performance were analyzed through Markov chain model.When transmitting the non-real-time(NR) packets,network coding was adopted to improve the efficiency of relay nodes; when transmitting the real-time(R) packets,randomized distributed space-time coding(R-DSTC)was used to enhance the reliability of transmission.Simulation results show that NSTCMAC protocol can meet different QoS requirements better,and solve the problem of relays’ low efficiency more effectively,when compared with legacy DCF、COOPMAC and CD-MAC protocol.…”
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Energy Transfer Using Gradient Index Metamaterial by Boopalan Ganapathy, Subramaniam Chittur Krishnaswamy

“…The structure nearly doubles the wireless power transfer quantum between the transmitter and the receiver when placed at both ends. …”
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Irradiance Scintillation Index for a Gaussian Beam Based on the Generalized Modified Atmospheric Spectrum with Aperture Averaged by Chao Gao, Yang Li, Yiming Li, Xiaofeng Li

“…This paper also examines the effects of the irradiance scintillation on the performance of the point-to-point optical wireless communication system with intensity modulation/direct detection scheme.…”
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Solar Charge Controller with Maximum Power Point Tracking for Low-Power Solar Applications by Tomy Abuzairi, Wing Wira Adimas Ramadhan, Kresna Devara

“…On the other hand, in lower power applications such as IoT sensors, solar street lights, and wireless communication nodes, these types of controllers can be produced at a lower cost. …”
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Intelligent reflecting surface-enabled electromagnetic stealth for 6G: recent advances and future prospects by MA Tiantian, ZHENG Beixiong, XIONG Xue, ZHANG Rui

“…The rapid development of wireless technology has driven a high level of informatization in modern warfare, opening a new era in electronic countermeasures (ECM). …”
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High Isolation Millimeter-Wave Wideband MIMO Antenna for 5G Communication by Fei Wang, Zhaoyun Duan, Xin Wang, Qing Zhou, Yubin Gong

“…Both simulated and measured results show that this proposed MIMO antenna is suitable for the future wireless communications.…”
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Wideband Circularly Polarized Microstrip-Slot Antenna with Parasitic Ground Planes by Qin Huang

“…Compared with other reported stacked CP antennas, the proposed antenna has significant advantages in CP bandwidth, which could occupy the wireless local area network ITS (5.8 GHz), (5.725–5.85 GHz), and WIFI (5.85–5.925 GHz) bands.…”
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Performance Analysis of OFDM under AWGN and Rayleigh Fading Channels Based on Software Defined Radio by Ivana Arum Dimarsasi, Rachmad Saptono, Muhammad Syirajjudin

“… Orthogonal Frequency Division Multiplexing (OFDM) is a very efficient and popular modulation technique in modern wireless communication systems. OFDM offers advantages in terms of spectrum efficiency, resistance to multi-path interference, and is able to support high data rates. …”
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Resilient Synchronization of Pulse-Coupled Oscillators Under Stealthy Attacks by Yugo Iori, Hideaki Ishii

“…This paper studies a clock synchronization problem for wireless sensor networks employing pulse-based communication when some of the nodes are faulty or even adversarial. …”
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Circularly Polarized Leaky-Wave Antenna Based on Low-Loss Transmission Line by Xingying Huo, Zheng Li

“…A leaky-wave antenna with circular polarization property is proposed in millimeter-wave band, which can be applied in the wireless communication systems and remote sensing. …”
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Downlink and Uplink Cooperative Transmission for Primary Secrecy Based Cognitive Radio Sensor Networks by Dawei Wang, Pinyi Ren, Qinghe Du, Li Sun, Yichen Wang

“…Aiming at allocating more licensed spectrum to wireless sensor nodes (SNs) under the constraint of the information security requirement of the primary system, in this paper, we propose a cooperative relaying and jamming secure transmission (CRJS) scheme in which SNs will relay primary message and jam primary eavesdrop concurrently with SN's downlink and uplink information transmission in cognitive radio sensor networks (CRSNs). …”
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La prochaine génération de téléphonie mobile (5G) et ses implications (Infrastructure, Réglementation) by Edward M. Roche, Benjamin H. Dickens-Jr., Walker Townes

“…The “5G” is a new generation of wireless telecommunications technology that promises to revolutionize how the world communicates. …”
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