A5100440529- Advanced Wireless Communication Techniques
- IoT Networks and Protocols
- Advanced MIMO Systems Optimization
- Blind Source Separation Techniques
- Wireless Communication Networks Research
- Indoor and Outdoor Localization Technologies
- Bluetooth and Wireless Communication Technologies
- Error Correcting Code Techniques
- PAPR reduction in OFDM
- Telecommunications and Broadcasting Technologies
- Underwater Vehicles and Communication Systems
- Energy Harvesting in Wireless Networks
- Algorithms and Data Compression
- Advanced Sensor and Control Systems
- Wireless Signal Modulation Classification
- IoT and Edge/Fog Computing
- Power Line Communications and Noise
- Adaptive Control of Nonlinear Systems
- Stability and Control of Uncertain Systems
- Wireless Body Area Networks
- Distributed Control Multi-Agent Systems
- Radio Frequency Integrated Circuit Design
- Cognitive Radio Networks and Spectrum Sensing
- Advancements in PLL and VCO Technologies
- Antenna Design and Analysis
Beijing Microelectronics Technology Institute
2018-2024
Shine Micro (United States)
2024
Tianjin University of Technology
2024
Shanghai University
2024
China Southern Power Grid (China)
2024
Beijing University of Technology
2022-2024
Nanjing University of Information Science and Technology
2023
State Key Laboratory on Integrated Optoelectronics
2023
Jilin University
2006-2023
Nanjing University of Science and Technology
2011-2023
In this study, the authors consider deployment of unmanned aerial vehicle networks for task accomplishment within a closed region. Each agent with limited sensing range and communication needs to take charge part whole The main objective is optimise agents such that maximum travelling time reach place surveillance region minimised. issue formulated as worst‐case disc‐covering problem distributed cooperative control strategy designed mobility. It proven by proposed network configuration...
A grating lobe-free silicon optical phased array with large field of view is demonstrated. Antennas periodically bending modulation are spaced at half wavelength or less. The experimental results show that the crosstalk between adjacent waveguides negligible 1550 nm wavelength. Additionally, to reduce reflection caused by sudden change refractive index output antenna array, tapered antennas added end face so more light will be coupled into free space. fabricated shows a 120° without any lobes.
In this paper, a two-path parallel scheme for m-QAM-OFDM transmission in optical wireless communications was proposed, and its principle theoretically derived. This transmitted OFDM signals, which carried m-QAM mapped data symbols their conjugated respectively. Simple superimposition at the receiver performed to mitigate inter-carrier interference (ICI). The feasibility of experimentally demonstrated over turbulent-air-water channel. results show that proposed not sensitive time delay...
Mobile edge computing (MEC), which sinks the functions of cloud servers, has become an emerging paradigm to solve contradiction between delay-sensitive tasks and resource-constrained terminals. Task offloading assisted by service caching in a collaborative manner can reduce delay balance load MEC. Due limited storage resources it is significant issue develop dynamical strategy according actual variable user demands task offloading. Therefore, this paper investigates problem Furthermore,...
The enhanced x-ray timing and polarimetry mission (eXTP) is a flagship observatory for timing, spectroscopy developed by an international consortium. Thanks to its very large collecting area, good spectral resolution unprecedented capabilities, eXTP will explore the properties of matter propagation light in most extreme conditions found universe. will, addition, be powerful observatory. continuously monitor sky, enable multi-wavelength multi-messenger studies. currently phase B, which...
With the continuous development of economy and society, power demand forecasting has become an important task industry. Accurate can promote operation supply However, since consumption is affected by a number factors, it difficult to accurately predict data. accumulation data in industry, machine learning technology shown great potential forecasting. In this study, gradient boosting decision tree (GBDT), extreme (XGBoost) light (LightGBM) are integrated stacking build XLG-LR fusion model...
With the rapid development of smart grids, deployment number transmission lines has significantly increased, posing significant challenges to detection and maintenance power facilities. Unmanned aerial vehicles (UAVs) have become a common means inspection. In context drone inspection, clusters are used as relays for long-distance communication expand range achieve data between patrol drones base stations. Most occurs in air-to-air channel UAVs, which requires high reliability relays....
With the continuous promotion of unified electricity spot market in southern region, formation mechanism price and its forecast will become one core elements for healthy development market. Effective prediction, on hand, can respond to power supply demand relationship; other players develop reasonable trading strategies based results prediction. The methods adopted this paper include: Analyzing principle formation. Identifying relevant factors prediction Utilizing a clustering model...
Due to the shortage of wireless resources and emergence a large number users, determining how guarantee quality-of-service (QoS) requirements users make more work in same spectrum has become an urgent research topic. In this paper, we study multi-user MIMO (MU-MIMO) cellular network system model which (CUs) share resource with multiple device-to-device (D2D) pairs. To maximize admitted D2D pairs sharing CUs, joint power allocation channel gain (JPACG) algorithm is proposed. The optimization...
Lightweight geopolymer has good physical and mechanical properties, thermal chemical stability low carbon dioxide emissions. The development of high-strength lightweight concrete (LGC) for load-bearing structures can expand applications. use ground granulated blast-furnace slag (GGBFS) to improve the properties pore structure LGC was investigated. ultimate compressive stress containing GGBFS were analysed, as well variation in microscopic structure. Specimens LGCs with different strengths...
The rapid development of Internet Things (IoT) puts forward much requirements for wireless communication technology. Low Power Wide Area Networks (LPWAN) are designed low bandwidth, power, long range and large number connected IoT applications. As one the LPWAN, Long Range Transceiver (LoRa) described as a Frequency Shift Chirp Modulation (FSCM), is widely concerned studied. This paper analyzes physical layer LoRa, presents basic mathematical signal processing model, proposes demodulation...
Large-scale optical fiber phased arrays (OFPAs) are capable of realizing high-power lasers and high-speed beam steering, which widely used in long-distance detection communication. However, dephasing occurring from jitter power amplifier noise can reduce quality steering precision applications. We demonstrate a two-dimensional 64-element OFPA system that employs stochastic parallel gradient descent algorithm to synchronize the phases thus achieve high-quality multi-beam output. Using total...
Cloud and edge computing, distributed AI, most recently 5G/6G communications are coming together changing the way we collaborate, connect interact. A new generation of AI-powered robots also expected to be facilitated by these digital technological breakthroughs. Robots supposed tackle unknown situations adapt in long term collaborating, connecting interacting with world. Such applications generate versatile, perpetuated rapidly transmission demands network. Traditional network resource...
Full-duplex (FD), Device-to-Device (D2D) and non-orthogonal multiple access (NOMA) are promising wireless communication techniques to improve the utilization of spectrum resources. Meanwhile, introducing FD, D2D NOMA in cellular networks is very challenging due complex interference problem. To deal with FD underlaying networks, power allocation (PA) extensively studied as an efficient management technique. However, most previous research works on PA optimize energy efficiency only consider...
Due to a high spatial angle resolution and low circuit cost of massive hybrid analog digital (HAD) multiple-input multiple-output (MIMO), it is viewed as valuable green communication technology for future wireless networks.Integrating the HAD-MIMO with direction arrival (DOA) will provide an even ultra-high performance DOA measurement, which can fullydigital (FD) MIMO.However, phase ambiguity challenge issue estimation.In this paper, we consider three parts: detection, estimation, Cramer-Rao...
Despite the widespread use of forward-error correcting (FEC) coding, most multiple-input-multiple-output (MIMO) blind channel-estimation techniques ignore its presence and instead make simplifying assumption that transmitted symbols are uncoded. However, FEC induces code structure in sequence can be exploited to improve MIMO channel estimates. In this paper, we exploit iterative estimation based on a posteriori information for separation decoding. Experiments show improvements achievable by...