A5100341305- Millimeter-Wave Propagation and Modeling
- Advanced MIMO Systems Optimization
- Vehicular Ad Hoc Networks (VANETs)
- Power Line Communications and Noise
- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Cooperative Communication and Network Coding
- Advanced Wireless Network Optimization
- Opportunistic and Delay-Tolerant Networks
- ZnO doping and properties
- Thin-Film Transistor Technologies
- Power Systems and Technologies
- Transition Metal Oxide Nanomaterials
- Smart Grid and Power Systems
- Energy Harvesting in Wireless Networks
- Wireless Communication Networks Research
- Telecommunications and Broadcasting Technologies
- Advanced Wireless Communication Techniques
- Advanced Measurement and Detection Methods
- Mobile Ad Hoc Networks
- Smart Grid Security and Resilience
- Radar Systems and Signal Processing
- Optimal Power Flow Distribution
- Advanced SAR Imaging Techniques
- Traffic control and management
Tsinghua University
2010-2025
Nanjing Normal University
2007-2025
Tongji University
2022-2025
Fudan University
2024
Beijing Tsinghua Chang Gung Hospital
2024
Shanghai Electric (China)
2023-2024
Shanghai Innovative Research Center of Traditional Chinese Medicine
2024
University of Electronic Science and Technology of China
2019-2024
First Hospital of Jilin University
2024
Jilin University
2024
In this paper, based on outdoor microcellular channel measurements at 32 GHz for 5G radio systems, a comprehensive modeling, simulation, and validation are performed. The directional-scan-sounding using horn antenna rotated with an angular step the receiver carried out, which constitutes virtual array to form single-input multiple-output channel. directional- omni-directional path-loss models developed by close-in floating-intercept methods. Non-parametric parametric methods applied extract...
Powered by the Internet of Things, vehicular ad-hoc networks are expected to evolve into Intelligent Vehicles in which each vehicle can be much more efficient various and transportation applications. In order realize this vision, a seamless low-latency ultrareliable vehicle-to-vehicle (V2V) communication network is required. Thus, it importance characterize V2V channels realistic environments, especially when line-of-sight between transmitter (Tx) receiver (Rx) obstructed. paper, we...
The liver is a pivotal organ that maintains internal homeostasis and actively participates in multiple physiological processes. Liver tissue engineering (LTE), by which vitro biomimetic models are constructed, serves as platform for disease research, drug screening, cell replacement therapies. 3D bioprinting used to create microenvironments closely mimic authentic tissues with carefully selected functional biomaterials. Ideal biomaterials exhibit characteristics such high biocompatibility,...
As one of the most important parts intelligent transportation systems, vehicle-to-vehicle (V2V) communications have been widely studied because potential improvements it can provide in terms traffic efficiency and safety through various applications. The research on propagation characteristics for V2V channels is primary importance, particular significant topic shadowing effects induced by obstructing vehicles between transmitter (Tx) receiver (Rx). In this paper, we present measurement...
5G, the new generation of mobile networks, attracts lots interests and attentions in wireless communication with its aggressive performance goals. To be able to provide much higher data rate than today, 5G networks will operate at frequencies crowded frequency bands used broader bandwidth. Understanding propagation characteristics channel under is essential for research networks. This requires a sounder (CS) system measurement modeling. meet goals, required support mmWave bands, ultra-broad...
Massive MIMO has been chosen as one of the candidate technologies fifth-generation mobile communication system (5G), and channel modeling massive is great importance. The most direct effective approach to investigate propagation characteristics channels measurements. However, there are only few measurements channels, still lacks deep investigations characteristics. In this paper, we present a measurement campaign indoor by using linear large-scale array with 64 elements. conducted at 2 GHz,...
In this letter, a three-dimensional (3-D) cluster-based nonstationary channel model is proposed for vehicle-to-vehicle (V2V) communications. To efficiently describe the scattering environment and reflect nonstationarity of V2V channels, considers single- double-bounced clusters in 3-D space, includes effect activity by introducing visibility regions. Furthermore, based on geometrical relationships model, impulse response derived as sum line-of-sight, rays, space-time-frequency correlation...
Understanding how target states respond to international provocations is crucial the study of crisis management and conflict onset. The primary focus existing research on individual effects ally influence domestic politics without considering their interaction. This addresses this gap by exploring combined impact leadership transitions, manners leader entry, ally’s importance states’ decisions resist challenges. Utilizing Truly Dyadic Dyad-Year (TDD) version Militarized Interstate...
In this paper, a massive multiple-input multiple-output (MIMO) channel measurement campaign with 256-element virtual rectangular array at the base station was conducted. The typical hotspot scenario, subway station, is considered, and measurements were conducted 6 GHz bandwidth of 100 MHz. A hybrid clustering approach proposed to characterize cluster evolution over largescale array. approach, we apply space-alternating generalized expectation maximization algorithm estimate multipath...
The UMTS Long Term Evolution (LTE) allows the pilot symbol power to be adjusted with respect that of data symbols. Such increase at symbols results in a more accurate channel estimate, but turn reduces amount available for transmission. In this paper, we derive optimal allocation based on maximization post-equalization Signal Interference and Noise Ratio (SINR) under imperfect knowledge. Simulation validates our analytical mode allocation.
Prior research has shown that delayed channel state information (CSI) severely degrades the throughput performance of multi-user (MU) multiple-input multiple-output (MIMO) transmission, resulting in a preference for single-user (SU) transmission. This paper investigates how relative MU-MIMO and SU-MIMO is affected by 1) different Doppler spectra, 2) high-order prediction methods estimation. Simulation results reveal often-used Jakes-Clarke spectrum worst case MU performance. By evaluating...
A framework of automatic clustering and tracking algorithm is proposed for the multipath components (MPCs) in time-variant radio channels. The based on channel dynamics time domain able to reflect birth death behaviors MPCs naturally. validated by a ray-tracer spatial model extension simulations. Compared with other existing algorithms, cluster time-varying track clusters high accuracy low complexity.
This paper presents wideband millimeter-wave channel characterization based on measurements at 26GHz with 1GHz bandwidth carried out in an open office KeySight Beijing, China, which is a representative of indoor hotspot scenario. In the time domain measurements, omni-directional biconical horn used as transmitter, while receiver 26dBi applied and rotated 5o angular step whole azimuth plane, from -10o - 30o elevation plane 10o step. Based line-of-sight (LOS) measured impulse responses 39...
The indoor radio channels at 15 GHz are investigated based on measurements. large- and small-scale fading behaviors as well the delay dispersion characteristics discussed. It is found that large-scale fading, Ricean<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>K</mml:mi></mml:mrow></mml:math>-factor, spread can be described by log-normal distributions. Furthermore, both autocorrelation cross correlation properties of above parameters analyzed modeled....
In this paper, a three-dimensional (3D) geometry-based stochastic scattering model (GBSSM) for wideband multi-input multi-output (MIMO) vehicle-to-vehicle (V2V) relay-based cooperative fading channel based on geometrical three-cylinder is proposed. Non-line-of-sight (NLOS) propagation condition assumed in amplify-and-forward (AF) networks from the source mobile station (S) to destination (D) via relay (R). We extend proposed narrowband and also introduce carrier frequency bandwidth into...
Ultrafiltration membranes have potential to solve the problems of water pollution and shortage.
This paper investigates the attenuation by a human body and trees as well material penetration loss at 26 39 GHz measurements theoretical modeling work. The were carried out large restaurant university campus using time domain channel sounder. Meanwhile, knife-edge (KE) model one-cylinder two-cylinder models based on uniform theory of diffraction (UTD) are applied to shape predict its in theory. ITU (International Telecommunication Union) modified used trees. results show that upper bound KE...