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Start date: 2010End date: 2019Type: search.filters.itemtype.Conference PaperHas files: NoAuthor: search.filters.author.Kocak, TaskinSubject: search.filters.subject.WpanSubject: search.filters.subject.Beamforming

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    Beamforming performance analysis for OFDM based IEEE 802.11ad millimeter-wave WPANs
    (2011) Zhu, Xiaoyi; Doufexi, Angela; Kocak, Taskin; Zhu, Xiaoyi, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom; Doufexi, Angela, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom; Kocak, Taskin, Department of Computer Engineering, Bahçeşehir Üniversitesi, Istanbul, Turkey
    This paper exploits the performance of three types of beamforming techniques over the 60 GHz orthogonal frequency division multiplexing (OFDM) based wireless personal area networks (WPANs). The effective SNR over typical IEEE 802.11ad channel models is used as the criterion to compare the beamforming performance. Symbol-wise beamforming reduces the complexity considerably compared to subcarrier-wise beamforming with some performance loss, while hybrid beamforming provides much less performance degradation at a reasonable cost. In order to verify the results, the bit error rate (BER) performance is simulated. In addition, the system throughput over range is presented in the paper. © 2011 IEEE. © 2013 Elsevier B.V., All rights reserved.
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    Location-aided multi-user beamforming for 60 GHz WPAN systems
    (2012) Han, Congzheng; Zhu, Xiaoyi; Doufexi, Angela; Kocak, Taskin; Han, Congzheng, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom; Zhu, Xiaoyi, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom; Doufexi, Angela, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, United Kingdom; Kocak, Taskin, Department of Computer Engineering, Bahçeşehir Üniversitesi, Istanbul, Turkey
    60 GHz wireless personal area networks (WPANs) offer multi-Gbps throughput, which will provide for a new wave of high data rate applications. This paper exploits the use of location information to improve the performance and enhance range of 60 GHz multi-user beamforming systems. When the location information is available at the transmitter, the scheduler chooses a set of maximum angularly separated users to share wireless resources simultaneously. If additional feedback of signal-to-interference and noise ratio (SINR) is known, a location-assisted scheduler is employed to increase the system overall performance. Both numerical and simulated results show that significant enhancement can be achieved by the proposed schedulers for 60 GHz WPAN systems. © 2012 IEEE. © 2012 Elsevier B.V., All rights reserved.