Results 51 to 60 of about 1,997,232 (196)

Waveforms for the Massive MIMO Downlink: Amplifier Efficiency, Distortion and Performance

open access: yes, 2015
In massive MIMO, most precoders result in downlink signals that suffer from high PAR, independently of modulation order and whether single-carrier or OFDM transmission is used. The high PAR lowers the power efficiency of the base station amplifiers.
Eriksson, Thomas   +2 more
core   +2 more sources

Online Monitoring of Transformer Winding Faults Based on Pulse Coupling Injection

open access: yesSensors
Aiming at the problems with traditional transformer winding deformation detection, requiring power outages, low signal-to-noise ratios for online monitoring, and insufficient feature extraction, this paper proposes a live monitoring and intelligent ...
Zetong Wang   +8 more
doaj   +1 more source

Monitoring voltage collapse margin by measuring the area voltage across several transmission lines with synchrophasors

open access: yes, 2014
We consider the fast monitoring of voltage collapse margin using synchrophasor measurements at both ends of transmission lines that transfer power from two generators to two loads.
Dobson, Ian, Ramirez, Lina
core   +1 more source

Transmission losses cost allocation in restructed electricity market environment [PDF]

open access: yes, 2014
During these recent decades, the restructuring system of electricity market has been taken places around the whole world. Due to the restructuring (deregulation), the electrical power system has been divided into three separates categories ...
Jaini, Nur ‘Afiqah
core  

Advancing Copper Wire Technology: Graphene/Cu Composites for Superior Conductivity and Strength

open access: yesApplied Sciences
Copper-based composites with enhanced strength and conductivity are critically important for improving efficiency and reducing energy consumption in the energy and power industries.
Wenjie Liu   +4 more
doaj   +1 more source

Active Distribution Network Fault Location Based on Petri Nets and Improved Particle Swarm Optimization Algorithm

open access: yesElectrica
To address issues such as inadequate fault tolerance, long computation time, and limited universality in fault location for active distribution networks, this paper proposes a fault location method that combines Petri nets with an improved particle swarm
Yunfeng Xia   +4 more
doaj   +1 more source

Spectral and Energy Efficiency in Cognitive Radio Systems with Unslotted Primary Users and Sensing Uncertainty

open access: yes, 2017
This paper studies energy efficiency (EE) and average throughput maximization for cognitive radio systems in the presence of unslotted primary users. It is assumed that primary user activity follows an ON-OFF alternating renewal process.
Gursoy, M. Cenk   +2 more
core   +1 more source

Wireless Power Transmission - A Next Generation Power Transmission System

open access: yesInternational Journal of Computer Applications, 2010
paper, we present the concept of transmitting power without using wires i.e., transmitting power as microwaves from one place to another is in order to reduce the transmission and distribution losses. This concept is known as Microwave Power transmission (MPT). We also discussed the technological developments in Wireless Power Transmission (WPT).
S. Sheik Mohammed   +2 more
openaire   +1 more source

Allocating Transmission to Mitigate Market Power in Electricity Networks [PDF]

open access: yes
We ask what conditions transmission contracts increase or mitigate market power. We show that the allocation process of transmission rights is crucial. In an efficient arbitraged uniform price auction, generators will only obtain contracts that mitigate ...
Neuhoff, K.   +2 more
core  

Boosting Fronthaul Capacity: Global Optimization of Power Sharing for Centralized Radio Access Network

open access: yes, 2018
The limited fronthaul capacity imposes a challenge on the uplink of centralized radio access network (C-RAN). We propose to boost the fronthaul capacity of massive multiple-input multiple-output (MIMO) aided C-RAN by globally optimizing the power sharing
Chen, Sheng   +4 more
core   +1 more source

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