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470 results on '"Beach, Mark"'

154. A framework for resources allocation in virtualised C-RAN

Author

Al-Samman, Imad, Artuso, Matteo, Christiansen, Henrik Lehrmann, Doufexi, Angela, Beach, Mark, Al-Samman, Imad, Artuso, Matteo, Christiansen, Henrik Lehrmann, Doufexi, Angela, and Beach, Mark

Abstract

The vast growth in mobile data traffic with its increasing capacity demands necessitates investigating future solutions to cope with these challenges. Network Virtualisation is considered one potential solution to simplify the current wireless networks. Recently efforts have been made to show the performance gains of different resource allocation schemes in legacy LTE air interface virtualization. Moreover Cloud — based mobile networks are anticipated to play a significant role for next generation mobile networks. This paper investigates the potential deployment benefits of a novel resource virtualization algorithm (Traffic Aware Joint Scheduling) in Cloud-RANs (C-RAN). Air interface resources are coordinated and allocated dynamically by a hypervisor among different virtual operators (VOs). Three distinctive schemes are proposed and evaluated against standard Round Robin (RR) C-RAN scheduling. Simulation results show improvements in the throughput of the mobile video traffic and reduction in end-to-end delay for delay sensitive applications. In addition, an assessment of fairness guarantee is considered across all users. Note that this paper considers the impact of the proposed schemes on the transmission/data plane.

Published
2016

157. Serving 22 Users in Real-Time with a 128-Antenna Massive MIMO Testbed

Author

Harris, Paul, primary, Hasan, Wael Boukley, additional, Malkowsky, Steffen, additional, Vieira, Joao, additional, Zhang, Siming, additional, Beach, Mark, additional, Liu, Liang, additional, Mellios, Evangelos, additional, Nix, Andrew, additional, Armour, Simon, additional, Doufexi, Angela, additional, Nieman, Karl, additional, and Kundargi, Nikhil, additional

Published
2016
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173. An Optimization-Based Design Technique for Multi-Band Power Amplifiers.

Author

Arabi, Eyad, Bagot, Peter, Bensmida, Souheil, Morris, Kevin, and Beach, Mark

Subjects
POWER amplifiers, OPTIMAL designs (Statistics), MATHEMATICAL optimization, ELECTRIC impedance, COMPUTER network architectures
Abstract

Matching networks for dual-band power amplifiers typically rely on complex, non-general techniques, which either use switches or result in large and lossy matching networks. In this work, mathematical optimization is employed to design the matching networks for multi-band power amplifiers. The theory of continuous modes is utilized together with accurate models for the device package to define the required impedance terminations theoretically thus allowing mathematical optimization to be used for the design. This technique depends on neither the network architecture nor the number of frequency bands. Therefore, simple and compact multi-band matching networks can be achieved. As proof of concept, a triple-band amplifier at 0.8, 1.8, and 2.4 GHz has been designed using the proposed method. The fabricated amplifier demonstrates maximum power added efficiencies of 70%, 60%, and 58% and output powers of 40 dBm, 41 dBm and 40 dBm for the three frequency bands, respectively. The presented design approach is highly suitable for the next generation of wireless systems. [ABSTRACT FROM AUTHOR]

Published
2018
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174. Fake news, truth and trust.

Author

Beach, Mark

Subjects
FAKE news, SOCIAL media, CHURCH buildings, YELLOW journalism, NEWSPAPERS
Abstract

America is addicted to fake news. What "appears" to be a new phenomenon and social concern influenced by the pervasiveness of social media, is actually deeply engrained in the American psyche and political, media, social and religious landscape since the founding of the country. [ABSTRACT FROM AUTHOR]

Published
2019

199. New Class of Brominated Polymeric Flame Retardants for use in Polystyrene Foams

Author

Beach, Mark W., primary, Beaudoin, Daniel A., additional, Beulich, Inken, additional, Bloom, J. Chris, additional, Davis, John W., additional, Hollnagel, Heli M., additional, Hull, John W., additional, King, Bruce, additional, Kram, Shari, additional, Lukas, Christine, additional, Matteucci, Michal, additional, Morgan, Ted, additional, and Stobby, Bill, additional

Published
2013
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