Performance analysis of multi-relay DF cooperative communication system based on directional antenna by Mingwei WANG, Huisheng ZHANG, Lixin LI, Lifeng HE

“…In order to achieve reliable communication in multi-relay cooperative communication，the directional antenna combining multi-relay cooperative communication system and optimal relay selection decode-and-forward cooperative strategy was presented.Firstly，the theoretical closed form of outage probability of the communication system using directional antenna operating in the three modes of DT-DR，DT-OR and OT-OR were presented.Then for three kinds mode，the collaboration communication system interrupt probability and signal-to-noise ratio，the number of relay nodes，the antenna gain channel fading efficiency and relationship between the channel capacity were analyzed in numerical simulation.These findings reveal that excellent performance of cooperative communication system with directional antennas could be achieved such as smaller outage probability and improved by best relay nodes and optimal power allocation coefficient.…”
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A Cooperative Motion Control Using Leader-Follower Approach for Unmanned Underwater Vehicle by Jingxiang Feng, Yang Cao, Xueman Fan, Guang Yang, Jingwei Dong

“…It estimates the expected cumulative reward of each action based on the current state, selects the optimal action, and significantly reduces the time required for UUV to reach the desired position. …”
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Data Cooperative Distribution Mechanism of Internet of Vehicles Using D2D Technology by Xuejuan Chen, Gaofeng Chu

“…The algorithm adaptively selects the optimal relay, route, and number of transmission hops based on the D2D link quality to find the optimal cooperative distribution scheme to achieve the goal of optimizing the energy efficiency of the requesting vehicle. …”
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AMCCR: Adaptive Multi-QoS Cross-Layer Cooperative Routing in Ad Hoc Networks by Mahadev A. Gawas, Lucy J. Gudino, K. R. Anupama

“…Secondly, we dynamically select the transmission mode to employ cooperative MAC scheme by exploiting spatial diversity. …”
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Asymptotic performance analysis of untrusted relay system with full-duplex jamming destination by Rui ZHAO, Xing TAN, Yuanjian LI, Yucheng HE, Chunguo LI

“…The cooperative relay technique in the field of physical layer security is widely concerned by the academic community,due to the advantages of increasing the network capacity and expanding the network coverage.However,cooperative relays may play as untrusted nodes in some certain circumstances.Based on this,to enhance the secrecy performance of untrusted relay systems,a novel full-duplex destination jamming (FDJ) scheme was proposed in the Rayleigh fading channel.In order to maximize the system’s secrecy capacity,a switchable split-optimal antenna selection (OAS) scheme was proposed for a multiple-antenna destination,the power allocation optimization scheme between the source and destination was designed,and the corresponding closed-form expressions of secrecy performance were given.In the large-scale antennas analysis,the closed-form expressions of the ergodic achievable secrecy rate and the optimal power allocation factor of instantaneous secrecy capacity for the FDJ-OAS scheme were derived.Furthermore,based on different asymptotic cases,the asymptotic analyses of secrecy outage probability for the FDJ-OAS scheme were significantly analyzed.Simulation results show that the analytical curves match well with the Monte-Carlo simulation results.It is concluded that the diversity order of the FDJ-OAS scheme is proportional to the number of antennas and antenna diversity can be achieved,which reveals the advantages of the proposed FDJ-OAS scheme.…”
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Emergency Capacity Pool to Respond to Unconventional Emergencies Based on Principal–Agent Theory by Na Jin, Fuyou Tan, Haiyan Wang, Ao Sang, Shipeng Wang

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Spectral-Spatial Collaborative Pretraining Framework With Multiconstraint Cooperation for Hyperspectral–Multispectral Image Fusion by Jia Jia, Haoyang Yu, Chengjun Wang, Ke Zheng, Jiaxin Li, Jiaochan Hu

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Evolutionary game-based cooperative strategy for effective capacity of multiple-input-multiple-output communications by Jianhua Liu, Jiadi Yu, Minglu Li, Luqun Li, Dazhi Li, Shigen Shen

“…In this article, we propose a game theoretical framework for mobile two-dimensional multiple-input-multiple-output communication networks to achieve optimal relay selection and cooperative control. A source node, relay, and destination node can make service-selection decisions dynamically in a two-level network, based on the mobile-channel satisfaction parameters (e.g. spatial-temporal correlation and relay survivability). …”
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Mixed Cooperation MAC Protocol with Sleep Mechanism for Data Acquisition in Wireless Machine-to-Machine Networks by Yulei Zhao, Bing Du, Ning Ge

“…Consequently, we propose an optimal source node selection strategy from the perspective of the relay node during its idle time, regarding the traffic load, residual energy, and channel state. …”
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A Novel Model for Calculating Uplink-Downlink Spectral Efficiency in Cooperative Communication MIMO Systems by Mohammad Reza Pouryeganeh, Azim Fard, Mohammad Bagher Tavakoli

“…However, systems that use cooperative communication have weaknesses in the structure, such as resistance to latency and an increase in the bandwidth of substitute users (SU), which can be improved by optimizing the relay selection method effectively. …”
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Performance Analysis of Energy Efficient Cooperative SWIPT NOMA-Assisted Cognitive Satellite-Terrestrial Networks by Swathi Priya Indraganti, Suseela Vappangi

“…In addition, the performances of primary and secondary users are further improved by using an optimal power distribution scheme which is implemented at the shared relay.…”
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Cooperative mechanisms of oxide ion conduction in tellurites with secondary bond interactions and Grotthuss-like processes by Zhenyu Zhu, Guanqun Cai, Yuxiang Feng, Juping Xu, Shengqi Chu, Pengfei An, Jianrong Zeng, Wen Yin, Yu Gu, Xiaojun Kuang, Junliang Sun

“…This detailed investigation of the cooperative mechanism with similar Grotthuss process at the atomic scale provides a direction for optimization and discovering oxide ion conducting materials.…”
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Deep coal fluidization mining ropeless hoisting system and its cooperative driving control strategy by Shuai LIU, Jiusheng BAO, Jinhao DAI, Yan YIN, Liang ZHAO, Zhongbin WANG, Shirong GE

“…First, according to the characteristics of the transport objects and working conditions of the deep coal fluidization mining system auxiliary lifting, the combined lifting scheme of linear motor and gear rack is proposed, and the drive equipment and system are selected and designed; Secondly, the vector control strategies of two kinds of motors, Gear-driven permanent magnet synchronous motor (PMSM) and Linear drive permanent magnet synchronous motor (PMLSM), are selected, and the dynamic response characteristics of the motor are studied through mathematical modeling of the two motors and simulation model establishment in MATLAB/Simulink; Secondly, in order to improve the synchronous performance of multi-motors, the research and analysis of multi-motor synchronization and cooperative control strategy are carried out, and the fuzzy PI optimization parameter method is used to optimize the traditional coupling control mode; At the same time, the control strategy of "constant torque (F)‒speed (ω)" is proposed for the collaborative control of dissimilar motors, and the dynamic simulation analysis is carried out based on AMESim; Finally, a prototype of the cordless hoisting system is established, and the feasibility and rationality of the "F‒ω" control strategy proposed in this paper are verified through tests. …”
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Selected Legumes Used As Summer Cover Crops by Jim Rich, David Wright, Jim Marois, Dick Sprenkel

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Dicarboxylate recognition based on ultracycle hosts through cooperative hydrogen bonding and anion–π interactions by Wen-Hui Mi, Teng-Yu Huang, Xu-Dong Wang, Yu-Fei Ao, Qi-Qiang Wang, De-Xian Wang

“…Host–dicarboxylate binding was investigated using 1H NMR titrations, revealing that B4aH exhibits strong binding affinities toward a series of dicarboxylates, with association constants reaching up to 6896 M−1. The selectivity for heptanedioate (C72−) was attributed to cooperative hydrogen bonding, anion–π interactions, and a size-matching effect, as supported by DFT optimizations.…”
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Multi-Agent Deep Reinforcement Learning Cooperative Control Model for Autonomous Vehicle Merging into Platoon in Highway by Jiajia Chen, Bingqing Zhu, Mengyu Zhang, Xiang Ling, Xiaobo Ruan, Yifan Deng, Ning Guo

“…This method simplifies the training process by using maximum Q-value action policy optimization to learn platoon gap selection and discrete action commands. …”
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A Multiobjective Evolutionary Algorithm for Energy-Efficient Cooperative Spectrum Sensing in Cognitive Radio Sensor Network by Weirong Liu, Gaorong Qin, Shuo Li, Jian He, Xiaoyong Zhang

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A Novel Energy-Efficient Clustering Based Cooperative Spectrum Sensing for Cognitive Radio Sensor Networks by Ashish Rauniyar, Soo Young Shin

“…Therefore, with the aim of increasing energy efficiency, network lifetime, network stability, and optimal cluster-head selection process, this paper proposes a novel energy-efficient clustering based on cooperative spectrum sensing (ECS) for CRSNs. …”
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SWIPT-Enabled Cooperative Wireless IoT Networks With Friendly Jammer and Eavesdropper: Outage and Intercept Probability Analysis by Dinh Tung Vo, Trinh Van Chien, Tan N. Nguyen, Dinh-Hieu Tran, Miroslav Voznak, Byung Seo Kim, Lam Thanh Tu

“…In this context, a low-complexity, sub-optimal, but efficient relay selection method is proposed. …”
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Probing Solid-Binding Peptide Self-Assembly Kinetics Using a Frequency Response Cooperativity Model by Taylor Bader, Kyle Boone, Chris Johnson, Cindy L. Berrie, Candan Tamerler

“…Solid-binding peptides (SBPs) have targetable intrinsic properties involving peptide–peptide and peptide–solid interactions, which result in high-affinity material-selective binding. Atomic force microscopy investigations confirmed this complex interplay of multi-step peptide assemblies in a cooperative modus. …”
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