A5073823937- Advanced MIMO Systems Optimization
- Higher Education and Teaching Methods
- Video Coding and Compression Technologies
- Cooperative Communication and Network Coding
- Ideological and Political Education
- Millimeter-Wave Propagation and Modeling
- Advanced Vision and Imaging
- Water Quality Monitoring and Analysis
- Image and Video Quality Assessment
- Advanced Data Compression Techniques
- Wireless Communication Networks Research
- TiO2 Photocatalysis and Solar Cells
- Age of Information Optimization
- Microwave Engineering and Waveguides
- IoT and Edge/Fog Computing
- Full-Duplex Wireless Communications
- Educational Technology and Assessment
- Caching and Content Delivery
- Wireless Communication Security Techniques
- Advanced Image Processing Techniques
- Direction-of-Arrival Estimation Techniques
- Educational Reforms and Innovations
- Advanced Wireless Communication Technologies
- Medical Research and Treatments
- Advanced Computational Techniques and Applications
Chongqing University of Posts and Telecommunications
2011-2024
Lawrence Berkeley National Laboratory
2024
Hunan Normal University
2003-2023
Nanchang University
2020
China Aerospace Science and Technology Corporation
2020
Tsinghua University
2002-2019
Yan'an Hospital Affiliated To Kunming Medical University
2017-2019
University Town of Shenzhen
2019
Kunming Medical University
2017-2019
Young Invincibles
2013
We consider an uplink cell-free massive multiple-input multiple-output (MIMO) system, in which the access points are connected to central processing unit (CPU) through a fronthaul network. This system has advantages of wide coverage and flexible deployment. However, performance this depends on capacity-limited fronthaul, when is saturated, quality service will be reduced. To address issue, we propose joint user clustering AP selection scheme, can reduce pressure link while taking into...
In Vehicular Edge Computing Network (VECN) scenarios, the mobility of vehicles causes uncertainty channel state information, which makes it difficult to guarantee Quality Service (QoS) in process computation offloading and resource allocation a Server (VECS). A multi-user optimization model algorithm based on Deep Deterministic Policy Gradient (DDPG) are proposed address this problem. Firstly, problem is modeled as Mixed Integer Nonlinear Programming (MINLP) according objective minimizing...
This paper analyzes the statistical characters of rate-distortion performances fast motion estimation (ME) algorithms in H.264/AVC and introduces an additional early termination scheme with adaptive thresholds for UMHS CBFPS. keeps R-D performance original CBFPS, while reducing computational complexity encoding process considerably. Simulation results different conditions (image sizes from QCIF to HD various quantization parameters) are shown. The proposed method is suitable on other video...
This study aims to investigate the efficacy and safety of neutral macroporous resin hemoperfusion in treating maintenance hemodialysis (MHD) patients with refractory uremic pruritus (RUP). Ninety were enrolled randomly divided into 3 groups: control group, experiment 1 2 group. Clinical symptom scores skin itching recorded before at 4 8 weeks after treatment. In addition, serum parathyroid hormone (PTH), calcium (Ca2+), phosphorus (P3+), C-reactive protein (CRP) detected; calcium–phosphorus...
This study examines the interplay between school environment, student motivation, and academic achievement among high learners in urban Bangkok. It aims to (1) assess how environment influences (2) evaluate impact of motivation on achievement, (3) test direct effect (4) investigate whether mediates this relationship. A quantitative cross-sectional design was employed, collecting data from students using validated scale, were collected 1,250 (ages 15-18) with a gender distribution 52% female...
In a cell-free (CF) wideband millimeter-wave (mmWave) massive multiple-input multiple-output (mMIMO) system, small number of users are simultaneously served by much larger distributed access points (APs). These APs employ hybrid precoders to achieve beamforming gain. However, the beam squint caused spatial-wideband effect deteriorates system performance. Moreover, application numerous radio frequency (RF) chains increases power consumption and reduces global energy efficiency (GEE). The...
This letter investigates the downlink of a cell-free millimeter wave (mmWave) massive multiple-input multiple-output (mMIMO) system, where many access points (APs) cooperatively serve user. Although intensive deployment APs can dramatically improve system capacity, it also increases network energy consumption substantially. To track non-concave global energy-efficiency (GEE) optimization problem, we decompose into hybrid precoder design and power allocation design. A novel dynamic subarray...
Introducing partial task offloading into vehicle edge computing networks (VECNs) can ease the burden placed on Internet of Vehicles (IoV) by emerging applications and services. In this circumstance, ratio resource allocation servers (ES) need to be addressed urgently. Based this, we propose a best response-based centralized multi-TaV computation algorithm (BR-CMCRA) jointly considering service (SeV) selection, strategy making, in multiple (TaV) system, utility function is related processing...
In order to achieve a better coding performance in Multi- view video (MVC), the search range for both motion estimation (ME) and disparity (DE) are set twice as large necessary ME alone, which brings great computational complexity encoder. Based on behavior analysis of estimation, simple yet effective fast algorithm, inter-view prediction (ISRP), is proposed this paper. By applying technique full or other algorithms, majority portion time could be removed while still maintained.
The MPEG-2 multiview profile implicitly defined disparity-compensated prediction by using the temporal scalability mode to exploit inter-viewchannel redundancies of multi-camera sequences. Unfortunately, structures in and MPEG-4 are not very suitable for coding multi-view standards could also be too complicated difficult implementation. paper presents a novel scheme based on H.264 with combination motion compensated prediction. Experimentations carried out group widely used video sequences...
The effects of prior cold deformation on the microstructures and room temperature mechanical properties an Al–3·5Cu–1·5Li–0·22(Sc + Zr) alloy have been observed by using TEM tensile test at temperature. results show that has character aging hardening, major phase precipitation strengthening is T 1 phase. result also leads to more dispersive uniform distribution precipitations. It accelerates response, causes earlier peak occurrence, enhances strength greatly. However, plasticity declined...
Device-to-device (D2D) communications and mobile edge computing (MEC) used to resolve traffic overload problems is a trend in the cellular network. By jointly considering computation capability maximum delay, resource-constrained terminals offload parts of their computation-intensive tasks one nearby device via D2D connection or an server deployed at base station connection. In this paper, novel method D2D-MEC system proposed, which enables task offloading resource allocation meanwhile...
The U.S. Department of Energy (DOE) is a long-standing leader in research and
In the newly finalized video coding standard H.264. Intra prediction is employed to reduce energy of error that has be transmitted. The order intra frame encoding from left right horizontally and top down vertically, so when doing prediction, reference pels can only appear on side upside predictive block. Therefore, it not possible consider various texture signals in process. purpose this paper overcome disadvantages existing decoding technique put forward an method based sub block group...
Millimeter-wave massive MIMO can effectively improve the signal-to-noise ratio, but high-dimensional channel matrix significantly increases complexity of classic estimation algorithm. On other hand, millimeter-wave has low rank and sparsity properties in angle domain. Combining these two accuracy. This article proposes a novel sparse method based on joint nuclear norm ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1-2</sub> -regularization....
Objective: This study aims to evaluate the effectiveness of individualized hemodialysis for unconventional hypotension in diabetic nephropathy patients. Methods: A total 60 patients were selected and randomly divided into group control group. The used standard dialysis model, while scheme, which was performed using an machine temperature control, pattern natrium, step ultrafiltration combination with dialysate-containing glucose. Results: occurrence rate hypotension, dry weight...
Different from the closed teaching concept in past, open is a thought that can improve quality and students' comprehensive capacity, enhance innovative thinking as well. The classroom exactly specific reflection of this basic guarantee carrying out teaching. includes contents, methods, environment, homework forms, assessments other important factors. Studying these contents favor establishment classroom.
we study the uplink performance of a cell-free massive MIMO (Multiple Input Multiple Output) system. The channel is modeled as rician fading that includes line-of-sight and scattering components, phase uniformly distributed. In order to relieve fronthaul burden computational complexity system, an access point selection scheme researched. addition, derive spectral efficiency expression system with propagation taking into account proposed selection. Numerical results show reduces pressure in...
Abstract Edge caching at access points (APs) is a promising approach to alleviate the fronthaul burden and reduce user‐perceived delay. However, edge placement still challenging considering coupling between AP‐user association, limited capacity, multi‐AP deployment in cell‐free (CF) massive MIMO systems. To this end, authors establish framework for joint problem of association minimize content delivery delay which considers both cooperation radio It an integer nonlinear programming NP‐hard....
With the arrival of information and digital age, traditional document archives management methods have gradually revealed a series issues, such as low efficiency, easy loss information, difficulties in storage retrieval. The rise intelligent technology has provided new solution for management. Particularly, combination technologies like artificial intelligence, big data, cloud computing greatly improved level intelligence This study aims to explore application management, analyzing its...
Currently, meniscus injury has become a common disease among sports and fitness enthusiasts in China, with root accounting for larger proportion, which damage impairs load distribution throughout the knee joint, reducing surface area to bear making patients susceptible early degenerative changes that alter their daily activities. This been ignored long time, recent years people have begun pay more attention it. However, diagnosis of is difficult detect, current mainstream method MRI...