A5101828722- Millimeter-Wave Propagation and Modeling
- Advanced MIMO Systems Optimization
- Cooperative Communication and Network Coding
- Advanced Photonic Communication Systems
- Full-Duplex Wireless Communications
- Advanced Wireless Communication Technologies
- Optical Network Technologies
- Microwave Engineering and Waveguides
- Wireless Networks and Protocols
- Photonic and Optical Devices
- Wireless Communication Security Techniques
- Advanced Wireless Network Optimization
- Fluid Dynamics and Turbulent Flows
- Silicon Carbide Semiconductor Technologies
- Electric Motor Design and Analysis
- Wireless Communication Networks Research
- Underwater Vehicles and Communication Systems
- Bluetooth and Wireless Communication Technologies
- RFID technology advancements
- Multilevel Inverters and Converters
- Indoor and Outdoor Localization Technologies
- Computational Fluid Dynamics and Aerodynamics
- Advanced Optical Sensing Technologies
- Coding theory and cryptography
- Sensorless Control of Electric Motors
Chengdu University of Technology
2025
Shanghai Jiao Tong University
2016-2024
Shanxi Medical University
2024
Qingdao University of Technology
2018-2024
Second Hospital of Shanxi Medical University
2024
Xi'an Aeronautical University
2023
University of Electronic Science and Technology of China
2018-2022
National Engineering Research Center of Electromagnetic Radiation Control Materials
2022
KTH Royal Institute of Technology
2015-2020
Qingdao University of Science and Technology
2018
Abstract Vortex and vorticity are two correlated but fundamentally different concepts which have been the central issues in fluid mechanics research. Vorticity has rigorous mathematical definition (curl of velocity), no clear physical meaning. meaning (rotation) definition. For a long time, many people treat them as same thing. However, based on our high-order direct numerical simulation (DNS), we found that first, “vortex” is not “vorticity tube” or “vortex widely defined bundle lines...
Indoor communications in the 60 GHz band is capable of supporting multi-gigabit wireless access thanks to abundant spectrum and possibility using dense antenna arrays. However, high directivity penetration loss make it vulnerable blockage events, which can be frequent indoor environments. Given network topology information sufficient precision, we investigate average throughput outage probability when connection between any two nodes established either via line-of-sight (LOS) link, through a...
We study the maximum achievable rate of a two-hop amplified-and-forward (AF) relaying millimeter-wave (mm-wave) system, where two AF schemes, i.e., half-duplex (HD) and full-duplex (FD) are discussed. By considering two-ray mm-wave channel Gaussian-type directional antenna, jointly, impacts beamwidth self-interference coefficient on rates investigated. Results show that, under sum-power constraint, FD-AF outperforms its HD counterpart only when antennas with narrower smaller applied....
Low latency is critical for many applications in wireless communications, e.g., vehicle-to-vehicle, multimedia, and industrial control networks. Meanwhile, the capability of providing multi-gigabits per second rates, millimeter-wave (mm-wave) communication has attracted substantial research interest recently. This paper investigates two strategies to reduce delay future networks: traffic dispersion network densification. A hybrid scheme that combines these also considered. The probabilistic...
We demonstrate a method to compensate multi-channel mismatches that intrinsically exist in photonic analog-to-digital converter (ADC) system. This system, nominated time-wavelength interleaved ADC (TWI-PADC), is time-interleaved via wavelength demultiplexing/multiplexing before sampling, demultiplexing channelization, and electronic quantization. Mismatches among multiple channels are estimated frequency domain hardware adjustment used approach the device-limited accuracy. A mismatch...
Underwater wireless sensor network is a novel type of underwater networked system. Due to the characteristics UWSN and channel, are vulnerable malicious attacks. The existing security solutions proposed for WSN cannot be used directly in UWSN. Moreover, most these layer wise. In this paper, we studied threat, attack, issues Subsequently, argue that layered schemes protect against blended Additionally, presented preliminary conceive, which cross-layer, adaptive, selective scheme.
This paper discusses a new channel model and code design for the reader-to-tag in near-field passive radio frequency identification (RFID) systems using inductive coupling as power transfer mechanism. If receiver resynchronizes its internal clock each time bit is detected, bit-shift used previously literature to needs be modified. In particular, we propose discretized Gaussian shift this scenario. We introduce concept of quantifiable error avoidance, which much simpler than correction. The...
We present the Cosmic Evolution Early Release Science (CEERS) Survey, a 77.2 hour Director's Discretionary Program. CEERS demonstrates, tests, and validates efficient extragalactic surveys using coordinated, overlapping parallel observations with JWST instrument suite, including NIRCam MIRI imaging, NIRSpec low (R~100) medium (R~1000) resolution spectroscopy, slitless grism (R~1500) spectroscopy. targets Hubble Space Telescope-observed region of Extended Groth Strip (EGS) field, supported by...
Heterogeneous ultradense networks (H-UDNs) are one key enabler for fifth-generation (5G) wireless and beyond to satisfy the explosive growth of mobile data traffic, which exploits spatial reuse scarce spectrum by deploying massive base stations (BSs) boost network capacity enhance coverage. In this article, we present system architecture 5G H-UDNs, consisting virtualized integrated ground-air-space radio access (RANs) core study coordination H-UDN efficiently manage computing resources...
The heterogeneous network (HetNet) is a key enabler to largely boost coverage and capacity in the forthcoming 5G beyond. To support explosively growing mobile data volumes, wireless communications with millimeter- wave (mmWave) radios have attracted massive attention, widely considered as promising candidate HetNets. In this article, we give an overview on end-to-end latency of HetNets mmWave communications. general, it rather challenging formulate optimize delay problem buffers...
The abundance of spectrum in the millimeter-wave (mm-wave) bands makes it an attractive alternative for future wireless communication systems. Such systems are expected to provide data transmission rates order multi-gigabits per second satisfy ever-increasing demand high rate communication. Unfortunately, mm-wave radio is subject severe path loss, which limits its usability long-range outdoor In this paper, we propose a multi-hop network communication, where multiple full-duplex buffered...
For buffer-aided tandem networks consisting of relay nodes and multiple channels per hop, we consider two traffic allocation schemes, namely local global allocation, investigate the end-to-end latency a file transfer. We formulate problem for generic multi-hop queuing systems subsequently derive closed-form expressions latency. quantify advantages scheme relative to its counterpart, conduct an asymptotic analysis on performance gain when number in each hops increases infinity. The...
ZigBee is a standard protocol suite for low rate wireless personal area networks (LR-WPANs) and has been widely utilized in various fields. Since both WLAN (802.11 b/g) operate the 2.4 GHz unlicensed industrial scientific medical (ISM) frequency band, mutual interference likely to exist cause signal degradation. In this paper, an analysis model suggested obtain estimate of packet error (PER) network. A evaluation kit, AVR RZ200, was implemented measurement loss ratio (PLR). The measured PLR...
To meet the ever-increasing demands on higher throughput and better network delay performance, 60 GHZ networking is proposed as a promising solution for next generation of wireless communications. successfully deploy such networks, its important to understand their performance first. However, due unique fading characteristic GHz channel, characterization corresponding service process, offered by using conventional methodologies may not be tractable. In this work, we provide an alternative...
In this paper, we investigate the co-tier and cross-tier interference mitigation problem using power control in a two-tier OFDMA femtocell network. By considering base station (BS) as auctioneer users bidders, formulate an auction game, which aims at minimizing total radiated by BS guaranteeing throughput requirement of femtocell. Moreover, propose novel auction-based distributed algorithm, can simultaneously allocate subchannel resource through game achieve near optimal performance with low...
High speed wireless access on 60 GHz spectrum relies high-gain directional antennas to overcome the severe signal attenuation. However, perfect alignment between transmitting and receiving antenna beams is rare in practice overheard signals from concurrent transmissions may cause significant interference. In this paper we analyze impact of beam misalignment system performance access. We quantify power loss caused by interference accumulated neighboring whose are leaked either via main-beam...
This Letter demonstrates the effectiveness of a high-speed high-resolution photonic analog-to-digital converter (PADC) for wideband signal detection. The PADC system is seeded by high-speed actively mode locked laser, and sampling rate multiplied via time-wavelength interleaving scheme. According to laboratory test, an X-band linear frequency modulation signal detected digitized system. The channel mismatch effect in wideband detection compensated via algorithm...
We analyze the delay performance of traffic dispersion in millimeter-wave (mm-wave) communications, where Nakagami-m fading channel is considered. To apply (min, +)-algebra network calculus wireless we develop a closed-form expression based on moment generating function (MGF), which characterizes stochastic service process by staying bit domain, rather than transferring to SNR domain. Subsequently, for with mm-wave, derive probabilistic bounds and effective capacity obtained MGF cumulative...
Wireless caching enables popular files to be stored at the base stations (BSs) in advance, which has been considered as an efficient way reduce service delay and alleviate heavy burdens on backhaul links. In this paper, we study BS clustering scheme for cooperative wireless networks (CWCNs) with heterogeneous file preference among users BSs, propose minimum cost (MC) based scheme. We first introduce weight-based function, characterizes trade-off between transmission cost, then formulate...
We experimentally demonstrate the ultra-high range resolution of a photonics-based microwave radar using high repetition rate actively mode-locked laser (AMLL). The transmitted signal and sampling clock in originate from same AMLL to achieve large instantaneous bandwidth. A Ka band linearly frequency modulated with bandwidth up 8 GHz is successfully generated processed electro-optical upconversion direct photonic sampling. minor lobe suppression (MLS) algorithm adopted enhance dynamic at...
This Letter theoretically and experimentally studies the response of photonic switching in a channel-interleaved analog-to-digital converter (PADC) with high sampling rate wide input frequency range. A figure merit (FoM) is introduced to evaluate PADC when dual-output Mach–Zehnder modulator (MZM) serves as switch parallelize sampled pulse train into two channels. After optimization FoM utilization channel-mismatch compensation algorithm, system bandwidth expanded signal-to-distortion ratio enhanced.
The major challenge in future heterogeneous wireless networks is to promote the network welfare by well designing radio resource management (RRM). Due similarity of both ecological system and on competitiveness, we propose a novel ecology-based adaptive control (EBANC) scheme for RRM optimize revenue, which introduces Lotka-Volterra competition equations (L-V model) predict outcome competitiveness. proposed EBANC consists two key algorithms, are access selection algorithm user side price...
An identity-based multisignature scheme is proposed using the bilinear property of Weil pairing defined on elliptic curves and Euler's criterion. In scheme, each signer only responsible for signing a particular section message, then signature sent to system administrato, message signed finally; can be verified by corresponding public key partial contents without revealing whole message. The size about quarter Guillou-Quisquater signature. management storage spending certificate could...