An Efficient Scheduling Scheme for Resource Utilization and Performance Enhancement of Multi User MIMO Wireless Systems

2011 ◽  
Vol 10 (7) ◽  
pp. 1452-1456 ◽  
Author(s):  
K. Chanthiras ◽  
M.A. Bhagyaveni
Keyword(s):  
Resource Utilization ◽  
Performance Enhancement ◽  
Wireless Systems ◽  
Scheduling Scheme ◽  
And Performance

scholarly journals An NFV-Based Energy Scheduling Algorithm for a 5G Enabled Fleet of Programmable Unmanned Aerial Vehicles

2019 ◽  
Vol 2019 ◽  
pp. 1-20 ◽  
Author(s):  
Christian Tipantuña ◽  
Xavier Hesselbach ◽  
Victor Sánchez-Aguero ◽  
Francisco Valera ◽  
Ivan Vidal ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Resource Utilization ◽  
Mobile Networks ◽  
Scheduling Algorithm ◽  
Network Services ◽  
Scheduling Scheme ◽  
Aerial Vehicles ◽  
Optimal Resource ◽  
And Performance ◽  
Emergency Scenarios

The fifth generation of mobile networks (5G) is expected to provide diverse and stringent improvements such as greater connectivity, bandwidth, throughput, availability, improved coverage, and lower latency. Considering this, drones or Unmanned Aerial Vehicles (UAVs) and Internet of Things (IoT) devices are perfect examples of existing technology that can take advantage of the capabilities provided by 5G technology. In particular, UAVs are expected to be an important component of 5G networks implementations and support different communication requirements and applications. UAVs working together with 5G can potentially facilitate the deployment of standalone or complementary communications infrastructures, and, due to its rapid deployment, these solutions are suitable candidates to provide network services in emergency scenarios, natural disasters, and search and rescue missions. An important consideration in the deployment of a programmable drone fleet is to guarantee the reliability and performance of the services through consistent monitoring, control, and management scheme. In this regard, the Network Functions Virtualization (NFV) paradigm, a key technology within the 5G ecosystem, can be used to perform automation, management, and orchestration tasks. In addition, to ensure the coordination and reliability in the communications systems, considering that the UAVs have a finite lifetime and that eventually they must be replaced, a scheduling scheme is needed to guarantee the availability of services and efficient resource utilization. To this end, in this paper is presented an UAV scheduling scheme which leverages the potential offered by NFV. The proposed strategy, based on a brute-force search combinatorial algorithm, allows obtaining the optimal scheduling of UAVs in time, in order to efficiently deploy network services. Simulation results validate the performance of the proposed strategy, by providing the number of drones needed to meet certain levels of service availability. Furthermore, the strategy allows knowing the sequence of replacement of UAVs to ensure the optimal resource utilization.

Geometric optimization and performance enhancement of PEDOT: PSS/GaAs NP array based heterojunction solar cells

2021 ◽  
Vol 117 ◽  
pp. 111080
Author(s):  
D.V. Prashant ◽  
Suneet Kumar Agnihotri ◽  
Dip Prakash Samajdar
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Geometric Optimization ◽  
Heterojunction Solar Cells ◽  
And Performance ◽  
Optimization And Performance

Advanced big-data/machine-learning techniques for optimization and performance enhancement of the heat pipe technology – A review and prospective study

2021 ◽  
Vol 294 ◽  
pp. 116969
Author(s):  
Zhangyuan Wang ◽  
Xudong Zhao ◽  
Zhonghe Han ◽  
Liang Luo ◽  
Jinwei Xiang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Big Data ◽  
Prospective Study ◽  
Heat Pipe ◽  
Performance Enhancement ◽  
Machine Learning Techniques ◽  
Learning Techniques ◽  
And Performance ◽  
Optimization And Performance

scholarly journals Mechanical and Microstructural Characteristics of Calcium Sulfoaluminate Cement Exposed to Early-Age Carbonation Curing

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3515
Author(s):  
Weikang Wang ◽  
Xuanchun Wei ◽  
Xinhua Cai ◽  
Hongyang Deng ◽  
Bokang Li
Keyword(s):  
Cement Paste ◽  
Pore Diameter ◽  
Performance Enhancement ◽  
Diameter Distribution ◽  
Early Age ◽  
Calcium Sulfoaluminate ◽  
Starting Point ◽  
And Performance ◽  
Curing Pressure ◽  
Carbonation Curing

: The early-age carbonation curing technique is an effective way to improve the performance of cement-based materials and reduce their carbon footprint. This work investigates the early mechanical properties and microstructure of calcium sulfoaluminate (CSA) cement specimens under early-age carbonation curing, considering five factors: briquetting pressure, water–binder (w/b) ratio, starting point of carbonation curing, carbonation curing time, and carbonation curing pressure. The carbonization process and performance enhancement mechanism of CSA cement are analyzed by mercury intrusion porosimetry (MIP), thermogravimetry and derivative thermogravimetry (TG-DTG) analysis, X-ray diffraction (XRD), and scanning electron microscope (SEM). The results show that early-age carbonation curing can accelerate the hardening speed of CSA cement paste, reduce the cumulative porosity of the cement paste, refine the pore diameter distribution, and make the pore diameter distribution more uniform, thus greatly improving the early compressive strength of the paste. The most favorable w/b ratio for the carbonization reaction of CSA cement paste is between 0.15 and 0.2; the most suitable carbonation curing starting time point is 4 h after initial hydration; the carbonation curing pressure should be between 3 and 4 bar; and the most appropriate time for carbonation curing is between 6 and 12 h.

Miniaturization and performance enhancement of Vivaldi antenna based on ultra-wideband metasurface lens

2021 ◽  
pp. 153703
Author(s):  
Shaopeng Pan ◽  
Wanting Shen ◽  
Yang Feng ◽  
Zhu Liu ◽  
Pei Xiao ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Ultra Wideband ◽  
Vivaldi Antenna ◽  
And Performance
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