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On the feasibility of blind dynamic TDD in ultra-dense wireless networks
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.ORCID iD: 0000-0003-2948-1082
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.ORCID iD: 0000-0001-7642-3067
2015 (English)In: IEEE Vehicular Technology Conference, IEEE , 2015Conference paper (Refereed)
Abstract [en]

Abstract-Dynamic configuring of uplink and downlink switching point in time division duplex (TDD) systems is considered a promising solution to cope with the traffic variations caused by the burstiness of mobile broadband data. However, such dynamic TDD (D-TDD) requires fast inter-cell coordination which may be difficult to implement in ultra-densely deployed networks (UDNs). In order to explore the possibility of designing simplified UDN, we investigate the feasibility of uncoordinated and greedy TDD operation, namely blind D-TDD. It exploits the characteristics of UDN such as low average network utilization and similar transmit power for base stations (BS) and user equipment (UE). To reduce the impact of co- channel interference (CCI), the effect of beamsteering is also evaluated. Our results indicate that blind D-TDD outperforms traditional static TDD (S-TDD) when instantaneous traffic demands for uplink and downlink are highly asymmetric. Also, beamsteering exerts a significant influence on the feasibility of blind D-TDD.

Place, publisher, year, edition, pages
IEEE , 2015.
Keyword [en]
Blind, Dynamic TDD, Throughput, Ultra-dense network, Interference suppression, Mobile telecommunication systems, Cochannel interference (CCI), Dense network, Dense wireless networks, Inter-cell coordinations, Net work utilization, Switching points, Time-division duplex systems, Cochannel interference
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-175070DOI: 10.1109/VTCSpring.2015.7145967ISI: 000371404700381ScopusID: 2-s2.0-84940434725ISBN: 9781479980888OAI: oai:DiVA.org:kth-175070DiVA: diva2:881410
Conference
81st IEEE Vehicular Technology Conference, VTC Spring 2015, 11 May 2015 through 14 May 2015
Note

QC 20151210

Available from: 2015-12-10 Created: 2015-10-09 Last updated: 2016-04-11Bibliographically approved

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Celik, HarisSung, Ki Won
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