A5101509589- Advanced MIMO Systems Optimization
- Advanced Wireless Network Optimization
- Cooperative Communication and Network Coding
- Dynamics and Control of Mechanical Systems
- Wireless Communication Networks Research
- Fluid Dynamics Simulations and Interactions
- Energy Load and Power Forecasting
- Biosensors and Analytical Detection
- Structural Health Monitoring Techniques
- Soil Mechanics and Vehicle Dynamics
- Adaptive Control of Nonlinear Systems
- Vibration and Dynamic Analysis
- Electromagnetic Launch and Propulsion Technology
- Belt Conveyor Systems Engineering
- Guidance and Control Systems
- Probabilistic and Robust Engineering Design
- Stock Market Forecasting Methods
- Heat Transfer and Boiling Studies
- Spacecraft Dynamics and Control
- Fatigue and fracture mechanics
- Spacecraft and Cryogenic Technologies
- Advanced Biosensing Techniques and Applications
- Advanced Wireless Communication Technologies
- Space Satellite Systems and Control
- Advanced biosensing and bioanalysis techniques
Qingdao Agricultural University
2024
China Academy of Launch Vehicle Technology
2020
Tufts University
2015
Beijing University of Posts and Telecommunications
2014
Tsinghua University
2013
Coordinated multipoint (CoMP) transmission/reception has been adopted as a key technology to alleviate the intercell interference (ICI) in fourthgeneration (4G) mobile communication. This article reviews state of art limited-feedback CoMP systems research. We first give an overview recent related work feedback-based coordinated transmission and then provide performance analysis typical feedback schemes sensitivity channel information (CSI) delay. To back up discussion, we have validated...
No AccessEngineering NoteMultibody Dynamics of Flexible Liquid Rockets with Depleting PropellantPengxiang Hu and Gexue RenPengxiang HuSchool Aerospace, Tsinghua University, 100084 Beijing, People's Republic China RenSchool ChinaPublished Online:29 Oct 2013https://doi.org/10.2514/1.59686SectionsRead Now ToolsAdd to favoritesDownload citationTrack citations About References [1] Rosser J. B., Newton R. Cross G. L., Mathematical Theory Rocket Flight, McGraw–Hill, New York, 1947, pp. 1–50. Google...
The virtual multiple-input multiple-output (V-MIMO) and coordinated multipoint transmission reception (CoMP) have been adopted by the LTE- Advanced as these techniques can significantly improve uplink spectral efficiency. Given poor cell-edge performance of conventional determinant pairing scheduling (DPS), heavy backhaul brings about performing (CR) to all UEs, this paper deals with a novel distributed algorithm for multi-user MIMO (MU-MIMO) systems. proposed differentiates approaches based...
As a key technology adopted by LTE-A, coordinated multipoint (CoMP) transmission and reception differs from other conventional techniques in the exploitation of inter-cell interference (ICI) to improve spectral efficiency, especially at cell-edge. While most previous studies concentrate on downlink CoMP aspects, this paper deals with scheduling uplink CoMP. A metric based nullspace projection average throughput is created support proposed algorithm. The novel approach compared strategies...
Point-of-care (POC) diagnostics integrated with smartphone platform has gained increasing attention in recent years due to its portability, cost-effectiveness and user-friendly setting. In this paper, we present an optical sensor based on a extremely low-cost spectrometer accessary, which can be applied for colorimetric sensing. The accessory enables separation quantification of color information from various samples, are essential many fluorescence-based detections. proposed consists LED as...
Resource allocation in Orthogonal Frequency Division Multiplexing (OFDM) system with mixed traffic is studied this paper. The sub-carriers and power of a base station (BS) are allocated to users maximize energy efficiency, which measured by utility per Watt. We model the sub- carriers as integer nonlinear programming (MINLP) problem, computationally forbidden due its non-concave objective function, non-convex feasible region variables. To simplify solution two-step resource (TSRA) algorithm...
Interactions of attitude control loop and POGO the large-scale launch vehicle tend to result in longitudal-laterl- torsional coupling phenomenon. The traditional design methods which separate are unable accurately grasp degree relationships. In this paper, proposion-stucture-control integrated dynamics model is constructed. With appropriate simplification, used for large-loop eigenvalue calculation stability analysis. way strength between revealed. And conclusion that first-order bending...
Covers advancements in spacecraft and tactical strategic missile systems, including subsystem design application, mission analysis, materials structures, developments space sciences, processing manufacturing, operations, applications of technologies to other fields.
Recent successful recovery techniques for rockets require that maintain a vertical configuration with zero and lateral velocities; otherwise, landings may fail. To relax this requirement, new active-arresting system (inspired by the arresting gears used on aircraft carriers) is proposed herein to achieve robust landing, even if rocket deviates from target position or has notable residual velocities inclinations. The consists of four deployable onboard hooks above rocket's center mass, an...
In current wireless cellular networks, interference has become the major obstacle to high spectral efficiency because of universal frequency reuse. Base station cooperation, also referred as coordinated multi-point processing or transmission(CoMP), emerged mitigate it by estimating and avoiding from adjacent base stations(BSs). Through analyzing scenario CoMP, we formulate scheduling problem maximizing weighted sum-rate considering both throughput fairness. An iterative algorithm jointly...
Energy efficiency is becoming more and important to the development of wireless communication. In this paper, we study energy-efficient resource allocation in an Orthogonal Frequency Division Multiplexing (OFDM) system with mixed traffic. Considering both energy spectral efficiency, model sub-carriers power as a integer nonlinear programming (MINLP) problem maximizing utility per Watt. The formulated non-convex computationally forbidden. To simplify solution problem, two-step (TSRA)...
In cellular wireless networks, base station (BS) cooperation is a promising technique to realize high spectral efficiency, whose potential gain, however, restricted by the backhaul network. this paper, we consider combining different decentralized cooperative strategies fully utilize limited backhaul. Firstly, impact of capacity on modeled. Then, develop analytical framework that gives mathematical expression for combination idea. Afterwards, establishment exploit as well channel...