The Experts below are selected from a list of 408618 Experts worldwide ranked by ideXlab platform
Gengfa Fang - One of the best experts on this subject based on the ideXlab platform.
-
Performance analysis of soft frequency reuse for inter cell interference coordination in lte networks
International Symposium on Communications and Information Technologies, 2010Co-Authors: Eryk Dutkiewicz, Xiaojing Huang, Markus Dominik Mueck, Gengfa FangAbstract:Due to the requirement of high spectrum efficiency, the frequency reuse of one is targeted for next generation OFDMA-based cellular networks. Such a frequency planning strategy can lead to unacceptable inter-cell interference levels experienced especially by Users located at the cell edge area. Soft frequency reuse (SFR) is considered as an effective frequency reuse scheme for inter-cell interference coordination as well as maintaining spectrum efficiency. In this paper, we investigate the Performance of SFR for LTE downlink transmission by considering issues of various traffic loads and different power ratio configurations. In addition to the cell-edge User Performance, the overall cell Performance and the cell-center User Performance are both evaluated in terms of throughput estimation. Using simulation studies, the advantages and limitations of SFR are comprehensively examined and compared against the classical frequency reuse of one scheme.
Korançe Françeska - One of the best experts on this subject based on the ideXlab platform.
-
Sustainability of the build environment and its impact on User Performance. Case study Polis University
'Universitat Politecnica de Valencia', 2021Co-Authors: Korançe FrançeskaAbstract:[EN] The built environment is important not only for its Users and owners, but also for the community and society as a hole, and yet, construction is one of the most energy consuming, destructive, and moreover material consuming industries. Deficiencies with adaptability to meet changing needs in terms of sustainability in architecture can eventually cause needless costs, environmental pressure and dissatisfaction. The aim of this study is to explore whether the circular construction and sustainability of built environments is not only a matter of reducing environmental impacts and limiting the use of non-renewable resources, but it can be successfully used to enhance of environmental protection, social equity, and economic development of a facility. Furthermore, the study tries to understand whether we can use circularity principles not only for the building to be more sustainable and in line with circular economy principles, but also be used to enhance User Performance, in this specific case the Performance of student and academic staff. The study was applied to Polis University and its premises. Two survey formats were specifically designed to collect data on overall functionality and comfort of Polis University facilities, as well as data on academic staff and student self assessment Performance. The study emphasizes the importance of the elements of sustainable built environment, and the care that designers and builders need to achieve what is called optimal comfort and functionality of each element, keeping in mind not only end Users but also environmental, social and economical aspects as a fully accomplished sustainable architecture design.Korançe, F. (2021). Sustainability of the build environment and its impact on User Performance. Case study Polis University. VITRUVIO - International Journal of Architectural Technology and Sustainability. 6(1):56-71. https://doi.org/10.4995/vitruvio-ijats.2021.15009OJS56716
-
Sustainability of the build environment and its impact on User Performance. Case study Polis University
'Universitat Politecnica de Valencia', 2021Co-Authors: Korançe FrançeskaAbstract:[EN] The built environment is important not only for its Users and owners, but also for the community and society as a hole, and yet, construction is one of the most energy consuming, destructive, and moreover material consuming industries. Deficiencies with adaptability to meet changing needs in terms of sustainability in architecture can eventually cause needless costs, environmental pressure and dissatisfaction. The aim of this study is to explore whether the circular construction and sustainability of built environments is not only a matter of reducing environmental impacts and limiting the use of non-renewable resources, but it can be successfully used to enhance of environmental protection, social equity, and economic development of a facility. Furthermore, the study tries to understand whether we can use circularity principles not only for the building to be more sustainable and in line with circular economy principles, but also be used to enhance User Performance, in this specific case the Performance of student and academic staff. The study was applied to Polis University and its premises. Two survey formats were specifically designed to collect data on overall functionality and comfort of Polis University facilities, as well as data on academic staff and student self assessment Performance. The study emphasizes the importance of the elements of sustainable built environment, and the care that designers and builders need to achieve what is called optimal comfort and functionality of each element, keeping in mind not only end Users but also environmental, social and economical aspects as a fully accomplished sustainable architecture design.Korançe, F. (2021). Sustainability of the build environment and its impact on User Performance. Case study Polis University. VITRUVIO - International Journal of Architectural Technology and Sustainability. 6(1):56-71. https://doi.org/10.4995/vitruvio-ijats.2021.15009OJS567161Arponen, J., Granskog, A., Pantsar-Kallio, M., Stuchtey,M., Törmänen, A., & Vanthournout, H. 2014. The possibilities of circular economy in Finland. Investigations by Sitra. Helsinki, Finland: Sitra.Durmisevic, E. 2019. Circular economy in construction. Design strategies for reversible buildings. Netherlands. ISBN 978-90-821-698-4-3. Available at https://www.bamb2020.eu/wp-content/uploads/2019/05/Reversible-Building-Design-Strateges.pdf.Elgner, H. 2006. New interior design trends, Design aspects - colours and materials.Flynn, Segil & Steffy. 2000. Office space planning: designing for tomorrow's workplace. US: McGraw-Hill professional.Gibbs, J. 1995. A Handbook for interior designers. London, UK: Ward Lock Limited.Gifford, R. 2007. Environmental psychology: Principles and practice. 4nd ed. Colville, WA, US: Optimal Books.Herlevi, K. 2015. Kiertotalouden mahdollisuudet Suomelle. Sitra. Accessed September 2018. [Online] Available at https://www.pikes.fi/documents/89847/3035594/Pielisen+Karjalan+TULEVAISUUSFOORUMI+2015+Herlevi+esitysversio.pdf/80270e71-0b17-460d-ba10-fe22cdd92d67.Huchendorf, L. 2007. 'The e ects of color on memory'. Journal of Undergraduate Research, X, pp. 1-4. Available at http://www.uwlax.edu/urc/juronline/PDF/2007/huchendorf.pdfHuovila, P., & Leinonen, J. 2001. Managing Performance in the built environment. CIB World Building Congress, April 2001, Wellington, New Zealand. Accessed online: https://www.irbnet.de/daten/iconda/CIB2781.pdf. (Accessed on 10.01.2021)Johansson, I., Van, G. B., Hultdin, J, Johansson, M., Hallmans, G. and Stattin P., (2010). Validity of food frequency questionnaire. European Journal of Clinical Nutrition, 64. pp. 905-13. https://doi.org/10.1038/ejcn.2010.80Koopmans L., Bernaards, C.M., Hildebrandt, V.H., van Buuren, S., van der Beek, A.J., de Vet, H.C.W. 2014. Improving the Individual Work Performance Questionnaire using Rasch analysis. Journal of Applied Measurement, 15(2), 160-175 [online Jan 11 2021] http://postprint.nivel.nl/PPpp5641.pdf? https://doi.org/10.1037/t35489-000Lammert, L. 2018. Circular Economy in Architecture - sustainable principles for future design. Thesis. University of Oulu, Faculty of Technology, Oulu School of Architecture. [Online] Available at: https://figbc.fi/wp-content/uploads/sites/4/2020/05/nbnfioulu-201811233096.pdf.Largo-Wighta, E., Chenb, W.W., Doddc, V., & Weilerb, R. 2010. 'The Nature Contact Questionnaire: A measure of healthy workplace exposure'. Work, 40(4), 411-423. https://doi.org/10.3233/WOR-2011-1253Miller, J.D. 1974. 'E ects of noise on people'. Journal of the Acoustical Society of America, 56(3), pp. 729-764. https://doi.org/10.1121/1.1903322Myerson, J., & Ross, P. 2006. Space to work. London, UK: Laurence King Publishing.Ogunmakinde, O., & Sher, W., & Maund, K. 2017. Circular Construction: Opportunities and Threats. UMD Project Management Symposium, May 4-5, 2017.Polis University. 2021. Official website: http://www.universitetipolis.edu.al/Raunio, M., Nordling, N., Ketola, T., Saarinen, J., & Heinikangas, A. 2016. 'Avoin innovaatioalusta kaupunkikehittämisen lähestymistapana. Käsikirja kehittäjille'. Avoimet innovaatioalustat. 1. Painos, versio 1.5. 6 aika. Oulu, Espoo, Helsinki, Tampere, Turku, Vantaa. Finland.Rayfield, J. 1994. Office interior design guide: an introduction for facilities managers and designers. New York, US: John Wiley & Sons, Inc.Sangar, A.V. 2007. Human behaviour in public spaces. Submitted in partial fulfilment of the requirements for the degree of bachelor of planning within the faculty of the built environment at the University of New South Wales. Sydney.Shannaq, B., Adebiaye, R., & Al-Azzawi, F. 2012. 'The impact of the green learning on the students Performance'. Asian Journal Of Computer Science And Information Technology (AJCIT), 2. pp. 190-193.The Global Impact of Biophilic Design in the Workplace 2015. [Online] Available at: https://greenplantsforgreenbuildings.org/wp-content/uploads/2015/08/Human
Gert Frølund Pedersen - One of the best experts on this subject based on the ideXlab platform.
-
Millimeter Wave Multi-User Performance Evaluation Based on Measured Channels With Virtual Antenna Array Channel Sounder
IEEE Access, 2018Co-Authors: Allan Wainaina Mbugua, Wei Fan, Gert Frølund PedersenAbstract:Virtual antenna arrays are versatile and cost-effective tools for millimeter-wave channel characterization. Massive sampling of the channel in space with virtual antenna arrays enables high spatial resolution in channel sounding. In this paper, a uniform cubic array is used with a vector network analyzer to characterize an indoor propagation channel. The power angle delay profile under line-of-sight (LOS) and obstructed-LOS (OLOS) scenarios is then extracted from the measurement data. The analysis is extended to a multi-User scenario using a virtual uniform rectangular array, which acts as the base station and with Users under LOS and OLOS conditions. Results show interference suppression with zero-forcing beamforming that performs well even in critical multi-User scenarios based on the measured channels, i.e., a scenario with closely spaced Users in LOS conditions and a scenario with a strong interfering User and a weak desired User.
Xinsheng Zhao - One of the best experts on this subject based on the ideXlab platform.
-
separate analysis of cell edge and cell centre User Performance for irregular massive mimo network with interference cancellation
Iet Communications, 2019Co-Authors: Changshan Chen, Xinsheng ZhaoAbstract:How much Performance gain for the User equipment (UE) located at cell-edge can be obtained, from the interference cancellation (IC) by exploiting extra degrees of freedom in multi-User massive multiple-input multiple-output (MIMO), needs to be investigated. Also, it is necessary to reveal the impact of this IC on the Performance of cell-centre UE (CCU). In this study, the authors separately analyse the coverage probability of cell-edge UE (CEU) and CCU under the IC in irregular network utilising tools from stochastic geometry. Specifically, the closed-form expressions for the upper bound of CEU coverage probability and the lower bound of coverage probability for CCU are given out. For large threshold scenario, the authors show the potential of massive MIMO with IC on achieving the cell-centre-like experience in a more simple closed-form formula. Analytical and numerical results show that a reasonable balance between the CEU Performance enhancement and the CCU Performance degradation under the IC can be reached. Moreover, slight influence of cell-edge area on the coverage probability for both CEU and CCU is observed. Finally, it is found that the coverage probability of CEU is more sensitive to the variation of density of UEs and the base stations than that of CCU.
-
separate analysis of cell edge and cell centre User Performance for irregular massive mimo network with interference cancellation
Iet Communications, 2019Co-Authors: Changshan Chen, Xinsheng ZhaoAbstract:How much Performance gain for the User equipment (UE) located at cell-edge can be obtained, from the interference cancellation (IC) by exploiting extra degrees of freedom in multi-User massive multiple-input multiple-output (MIMO), needs to be investigated. Also, it is necessary to reveal the impact of this IC on the Performance of cell-centre UE (CCU). In this study, the authors separately analyse the coverage probability of cell-edge UE (CEU) and CCU under the IC in irregular network utilising tools from stochastic geometry. Specifically, the closed-form expressions for the upper bound of CEU coverage probability and the lower bound of coverage probability for CCU are given out. For large threshold scenario, the authors show the potential of massive MIMO with IC on achieving the cell-centre-like experience in a more simple closed-form formula. Analytical and numerical results show that a reasonable balance between the CEU Performance enhancement and the CCU Performance degradation under the IC can be reached. Moreover, slight influence of cell-edge area on the coverage probability for both CEU and CCU is observed. Finally, it is found that the coverage probability of CEU is more sensitive to the variation of density of UEs and the base stations than that of CCU.
Elizabeth S Redden - One of the best experts on this subject based on the ideXlab platform.
-
comparing the effects of visual auditory and visual tactile feedback on User Performance a meta analysis
International Conference on Multimodal Interfaces, 2006Co-Authors: Jennifer L Burke, Matthew S Prewett, Ashley A Gray, Liuquin Yang, Frederick R B Stilson, Michael D Coovert, Linda R Elliot, Elizabeth S ReddenAbstract:In a meta-analysis of 43 studies, we examined the effects of multimodal feedback on User Performance, comparing visual-auditory and visual-tactile feedback to visual feedback alone. Results indicate that adding an additional modality to visual feedback improves Performance overall. Both visual-auditory feedback and visual-tactile feedback provided advantages in reducing reaction times and improving Performance scores, but were not effective in reducing error rates. Effects are moderated by task type, workload, and number of tasks. Visual-auditory feedback is most effective when a single task is being performed (g = .87), and under normal workload conditions (g = .71). Visual-tactile feedback is more effective when multiple tasks are begin performed (g = .77) and workload conditions are high (g = .84). Both types of multimodal feedback are effective for target acquisition tasks; but vary in effectiveness for other task types. Implications for practice and research are discussed.
