Energy Consumption of Next-Generation Optical-Wireless Converged Networks

2012 ◽  
Author(s):  
Chathurika Ranaweera ◽  
Christina Lim ◽  
Elaine Wong ◽  
Ampalavanapillai Nirmalathas ◽  
Chamil Jayasundara
Keyword(s):  
Energy Consumption ◽  
Optical Wireless ◽  
Next Generation

Energy Consumption of Next-Generation Optical-Wireless Converged Networks

2012 ◽  
Author(s):  
Chathurika Ranaweera ◽  
Christina Lim ◽  
Elaine Wong ◽  
Ampalavanapillai Nirmalathas ◽  
Chamil L. Jayasundara
Keyword(s):  
Energy Consumption ◽  
Optical Wireless ◽  
Next Generation

Next generation optical-wireless converged network architectures

IEEE Network ◽  
2012 ◽  
Vol 26 (2) ◽  
pp. 22-27 ◽  
Author(s):  
Chathurika Ranaweera ◽  
Elaine Wong ◽  
Christina Lim ◽  
Ampalavanapillai Nirmalathas
Keyword(s):  
Network Architectures ◽  
Optical Wireless ◽  
Next Generation ◽  
Converged Network

Profiling and Modelling of HEVC Intra Video Encoder’s Energy Consumption for Next Generation WVSNS

2017 ◽  
pp. 472-482 ◽  
Author(s):  
Achraf Ait-Beni-Ifit ◽  
Othmane Alaoui-Fdili ◽  
Patrick Corlay ◽  
François-Xavier Coudoux ◽  
Driss Aboutajdine
Keyword(s):  
Energy Consumption ◽  
Next Generation

scholarly journals Radio-frequency chain selection for energy and spectral efficiency maximization in hybrid beamforming under hardware imperfections

2020 ◽  
Vol 476 (2244) ◽  
pp. 20200451
Author(s):  
Evangelos Vlachos ◽  
John Thompson ◽  
Aryan Kaushik ◽  
Christos Masouros
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Radio Frequency ◽  
Spectral Efficiency ◽  
Significant Loss ◽  
System Modelling ◽  
Next Generation ◽  
Hardware Complexity ◽  
Millimetre Wave ◽  
Hybrid Beamforming

The next-generation wireless communications require reduced energy consumption, increased data rates and better signal coverage. The millimetre-wave frequency spectrum above 30 GHz can help fulfil the performance requirements of the next-generation mobile broadband systems. Multiple-input multiple-output technology can provide performance gains to help mitigate the increased path loss experienced at millimetre-wave frequencies compared with microwave bands. Emerging hybrid beamforming architectures can reduce the energy consumption and hardware complexity with the use of fewer radio-frequency (RF) chains. Energy efficiency is identified as a key fifth-generation metric and will have a major impact on the hybrid beamforming system design. In terms of transceiver power consumption, deactivating parts of the beamformer structure to reduce power typically leads to significant loss of spectral efficiency. Our aim is to achieve the highest energy efficiency for the millimetre-wave communications system while mitigating the resulting loss in spectral efficiency. To achieve this, we propose an optimal selection framework which activates specific RF chains that amplify the digitally beamformed signals with the analogue beamforming network. Practical precoding is considered by including the effects of user interference, noise and hardware impairments in the system modelling.

Creating a New Energy Efficiency Tool for Manufacturing Automation to Support Next Generation Sustainable Eco-Factories

2017 ◽  
Author(s):  
David A. Guerra-Zubiaga ◽  
Stephen Newman
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Sustainable Manufacturing ◽  
Manufacturing Processes ◽  
Next Generation ◽  
Fully Integrated ◽  
Global Trends ◽  
Manufacturing Automation ◽  
Significant Challenge ◽  
New Energy

Global trends indicate that energy consumption in manufacturing automation is an important aspect to support next generation of sustainable eco-factories. Some manufacturing processes consume large amounts of energy to fully be automated. Researchers have been emphasizing the significant challenge energy generation will be in coming years to fulfill demand. Therefore, there is a need to explore new ways of reducing manufacturing automation energy consumption. This paper focuses on research concerned with energy consumption in a fully integrated manufacturing automation, and argues that the understanding of different approaches to explore novel tools for sustainable manufacturing is important to support eco-factories.

scholarly journals On the Energy Efficiency in the Next Generation of Smart Buildings—Supporting Technologies and Techniques

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4399 ◽  
Author(s):  
César Benavente-Peces
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Harvesting ◽  
Smart Grids ◽  
Smart Cities ◽  
Clean Energy ◽  
Communication Technologies ◽  
Next Generation ◽  
Smart Buildings ◽  
The Impact

Energy efficiency is one of the most relevant issues that the scientific community, and society in general, must face in the next years. Furthermore, higher energy efficiencies will contribute to worldwide sustainability. Buildings are responsible for 40% of the overall consumed energy. Smart Grids and Smart Buildings are playing an essential role in the definition of the next generation of sustainable Smart Cities. The main goal is reducing the impact of energy consumption on the environment as much as possible. This paper focuses on information communication technologies (ICTs) and techniques, their key characteristics and contribution to obtain higher energy efficiencies in smart buildings. Given that electrical energy is the most used, the investigation mainly centres on this energy. This paper also pays attention to green energies and energy harvesting due to their contribution to energy efficiency by providing additional clean energy. The main contribution of this investigation is pointing out the most relevant existing and emerging ICT technologies and techniques which can be used to optimize the energy efficiency of Smart Buildings. The research puts special attention on available, novel and emerging sensors, communication technologies and standards, intelligence techniques and algorithms, green energies and energy harvesting. All of them enable high-performance intelligent systems to optimize energy consumption and occupants’ comfort. Furthermore, it remarks on the most suitable technologies and techniques, their main features and their applications in Smart Buildings.

scholarly journals Transceiver Design for GFDM with Hexagonal Time–Frequency Allocation Using the Polyphase Decomposition

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1862
Author(s):  
Evren Catak ◽  
Arild Moldsvor ◽  
Mohammad Derawi
Keyword(s):  
Energy Consumption ◽  
Computational Complexity ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Channel Model ◽  
Low Latency ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Next Generation ◽  
Time Frequency

Generalized frequency division multiplexing (GFDM) is a waveform for the next-generation communication systems to succeed in the drawbacks of orthogonal frequency division multiplexing (OFDM). The symbols of users are transmitted with the time- and frequency-shifted versions of a prototype filter. According to filtering operation, the computational complexity and processing load are high for the devices that suffer from energy consumption. The communication systems are required to support the new generation devices that need low energy consumption and low latency issues. Motivated by such demands of the next-generation communication system, we propose a novel GFDM waveform that we call hexagonal GFDM. The contributions of the hexagonal GFDM are that it: (i) supports short transmission time based on its hexagonal time–frequency allocations; and (ii) provides low latency communication with low computational complexity manner. Furthermore, we design a transmitter and receiver structure in a less complicated way with mathematical derivation by using polyphase decomposition and Fourier transform (FT) transformation. The proposed systems are realized analytically and investigated over Rayleigh fading channel model through computer simulations.

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