Refueling Delay Models in Heterogenous Road Networks for Wireless Communications Base Station Gensets Operating in Extreme Conditions

2021 ◽  
Author(s):  
Vaidyanathan Krishnamurthy ◽  
Alexis Kwasinski
Keyword(s):  
Wireless Communications ◽  
Road Networks ◽  
Base Station ◽  
Extreme Conditions ◽  
Delay Models

Real Time Entry Prohibition System for Coalmines

2020 ◽  
Vol 11 (2) ◽  
pp. 45-65
Author(s):  
Urmila Shrawankar ◽  
Rahul Neware ◽  
Pranay Mangulkar
Keyword(s):  
Wireless Communications ◽  
Real Time ◽  
Coal Mines ◽  
Well Being ◽  
Base Station ◽  
Wireless Transmission ◽  
Underground Mines ◽  
Software Systems ◽  
Underground Coal Mines ◽  
Favorable Conditions

This article focuses on the hazardous conditions prevailing in underground coal mines and the decision to prohibit entry, when conditions are adverse. Thus, the ongoing observation framework is helpful for ascertaining the conditions for working in underground coal mines and for essential safety and well-being measures. The advancements in WSN lead to advancements in wireless communications. The various sensors are deployed at the location and sense the environment and provide recent activities of the underground coal mines. The sensors transmit the procured information to the base station, principally the A-D transformation. The sensors can be considered a hub to the base station. Wireless transmission is used to send the data to the user. The designed hardware and software systems are used for the identification of the parameters and as per the thresholds, the decision and the prohibition of workers before entering into the mine is decided. The ML system helps in checking the favorable conditions for working in underground mines. While experimenting, real-time sensor generated data is used.

scholarly journals Energy Efficiency Analysis of ICN Assisted 5G IoT System

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Di Zhang ◽  
Zhenyu Zhou ◽  
Zhengyu Zhu ◽  
Shahid Mumtaz
Keyword(s):  
Energy Efficiency ◽  
Wireless Communications ◽  
Efficiency Analysis ◽  
Base Station ◽  
Numerical Results ◽  
System Model ◽  
The Core ◽  
Sum Rate ◽  
Network Router ◽  
Energy Efficiency Analysis

Other than separately investing the energy efficiency (EE) merits of information-centric networking’s (ICN’s) caching and sharing (CS) mechanism in wireless communications, here we comprehensively compare the EE performances of ICN’s CS mechanism in different scenarios. A modified system model is first proposed while introducing the CS mechanism into the in-network router, base station (BS), and neighboring user sides. Afterwards, the system achievable sum rate as well as the power consumptions in wireless and wired sections is investigated. The EE performances of different scenarios are finally obtained by dividing the achievable sum rate by the consumed power. While comparing the three scenarios, numerical results demonstrate that the optimal place to cache the content is mainly determined by the distance and hub number of the core routers that passed.

scholarly journals An Implementation of Adaptive Classification Exploration for Channel Estimation in Mu-Mimo

2020 ◽  
Vol 9 (2S5) ◽  
pp. 43-46
Keyword(s):  
Wireless Communications ◽  
Channel Estimation ◽  
Base Station ◽  
Multiuser Mimo ◽  
Adaptive Classification ◽  
Evaluation Strategies ◽  
Ultimate Objective

A gigantic multi-customer versatile multi-input different yield (MIMO-MU) Wireless Communications structures, reference to the base station (BS) is made is furnished with a tremendous In LTE faster (LTE-A) without modulation position pictures are utilized for pilot upheld station estimation to perform clear disclosure. Since these reference pictures are conveyed at the vague time-repeat places for whole customers of Multiuser MIMO (MIM-MU) movements of the each and every spatial layer in Solo-User MIMO (MIMO-SU) proposed to be code-space even for you to be recognizable on the authority. This balance is gotten by technique for reliably moving an location sign stand variety, when a accurate repeated move regards are motioned to each person. In this canvases we show formal indistinguishable quality of MU-MIMO& SU-MIMO of a LTE-An uplink inside the setting of channel estimation. When we are planning a general pleasing map the assign cyclic developments to customers with the ultimate objective the MIMO-SU evaluation strategies are material in addition for MU-MIMOA and send. Further we show the tradeoff among the measure of dynamic customers and the redirect's repeat discrimination in MIMO-MU movement for to the rest of the control estimation botches

scholarly journals Multiple Unmanned Aerial Vehicles Deployment and User Pairing for Non-Orthogonal Multiple Access Schemes

2020 ◽  
Author(s):  
Jie Wang ◽  
Miao Liu ◽  
Jinlong Sun ◽  
Guan Gui ◽  
Haris Gacanin ◽  
...  
Keyword(s):  
Wireless Communications ◽  
Unmanned Aerial Vehicles ◽  
Message Passing ◽  
Multiple Access ◽  
Base Station ◽  
Spectrum Efficiency ◽  
User Pairing ◽  
Aerial Vehicles ◽  
Multiple Uavs ◽  
Multiple Unmanned Aerial Vehicles

Non-orthogonal multiple access (NOMA) significantly improves the connectivity opportunities and enhances the spectrum efficiency (SE) in the fifth generation and beyond (B5G) wireless communications. Meanwhile, emerging B5G services demand of higher SE in the NOMA based wireless communications. However, traditional ground-to-ground (G2G) communications are hard to satisfy these demands, especially for the cellular uplinks. To solve these challenges, this paper proposes a multiple unmanned aerial vehicles (UAVs) aided uplink NOMA method. In detail, multiple hovering UAVs relay data for a part of ground users (GUs) and share the sub-channels with the left GUs that communicate with the base station (BS) directly. Furthermore, this paper proposes a K-means clustering based UAV deployment and location based user pairing scheme to optimize the transceiver association for the multiple UAVs aided NOMA uplinks. Finally, a sum power minimization based resource allocation problem is formulated with the lowest quality of service (QoS) constraints. We solve it with the message-passing algorithm and evaluate the superior performances of the proposed scheduling and paring schemes on SE and energy efficiency (EE). Extensive experiments are conducted to compare the performances of the proposed schemes with those of the single UAV aided NOMA uplinks, G2G based NOMA uplinks, and the proposed multiple UAVs aided uplinks with a random UAV deployment. Simulation results demonstrate that the proposed multiple UAVs deployment and user pairing based NOMA scheme significantly improves the EE and the SE of the cellular uplinks at the cost of only a little relaying power consumption of the UAVs.

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