Search results for "HSDPA"

showing 6 items of 6 documents

Performance of advanced transmission and reception algorithms for high speed downlink packet access

2008

Nykyisten kolmannen sukupolven (3G) matkaviestinverkkojen suorituskykyä voidaan parantaa huomattavasti käyttämällä erilaisia kehittyneitä tekniikoita tukiasemissa ja matkaviestimissä. Suorituskyvyn lisääminen on tarpeen langattoman liikenteen jatkuvasti kasvaessa. – Ihmisten liikkuvuus on huipussaan ja esimerkiksi työn sidonnaisuus yhteen paikkaan on vähentynyt. Tarve olla jatkuvasti yhteydessä tietoverkkoon on samalla lisääntynyt. Yhä useammalla on esimerkiksi ns. liikkuva laajakaista, jolla nopea Internet-yhteys on riippumaton paikasta, Nihtilä toteaa. Nihtilä tutki väitöskirjassaan erilaisten lähetin- ja vastaanotinalgoritmien suorituskykyä 3G-teknologia WCDMA:n (Wideband Code Division M…

WCDMAHSDPAmatkaviestinverkottietotekniikka
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Advanced receivers and antenna diversity in WCDMA HSDPA

2007

WCDMAHSDPAtietotekniikka
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Enhancing the performance of HSDPA communication with multipoint transmission techniques

2015

The evolution of mobile phones, tablets and other mobile communication devices has led to a significant increase in the amount of data delivered over mobile networks. In order to satisfy the climbing data rate demands of customers, existing mobile broadband networks are being expanded with new features that allow ubiquitous and consistent networking experience. This research presents three multipoint transmission techniques for Wideband Code Division Multiple Access (WCDMA) based High-Speed Downlink Packet Access (HSDPA) communication protocol. Multiflow, High-Speed Single-Frequency Network (HS-SFN) and Multipoint-to-Point Single-Frequency Network (M2P-SFN) enable transmission of user-dedicat…

monipistelähetysComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSHSDPAmultipoint transmissionmatkaviestinverkottukiasematsimulationtiedonsiirtoprotokollatM2P-SFNlangaton tiedonsiirtoHS-DDTxlaajakaistaverkot3G-tekniikkaWCDMAmultiflow3Gsimulointischedulinglangattomat verkotsingle-frequency network
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Multipoint transmission scheme for HSDPA

2013

multipoint transmissionHSDPAsystem performancelangaton tekniikkamatkaviestinverkotphase adjustmentprotokollatlangaton tiedonsiirtotype3 receiver3G-tekniikkamultiflowHS-SFNsimulointisimulationslangattomat verkot
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Enhancing system level performance of third generation cellular networks through VoIP and MBMS services

2010

suorituskykycellular networkscapacitykehittäminenHSDPAmatkaviestinverkottietoliikenneverkotkapasiteettitiedonsiirtoperformance enhancementmobilityWireless communication systemsMBMSVoIPquality of serviceHSUPAtietoliikennetekniikka
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Introduction of Multiflow for HSDPA

2012

This paper introduces a multi-cell transmission scheme for High-Speed Downlink Packet Access (HSDPA) networks, called Multiflow. In this concept, downlink data is transmitted to a user terminal at the border of two cells from one or both of the cells. The cells may belong to same NodeB or to two different NodeBs. The data flows are separated by different scrambling codes used by each associated cell, thus the flows can be treated independently. This provides increased multi-user diversity by means of flexibility in downlink resource management, in addition to the spatial diversity of multiple transmission locations. Another important gain mechanism for this scheme is realized by short-term …

ta113Computer scienceNetwork packetbusiness.industryHSDPALoad balancing (computing)Antenna diversityMonipistelähetysScramblingHandoverTelecommunications linkNetwork performanceNodeBbusinessMultipoint transmissionComputer network2012 5th International Conference on New Technologies, Mobility and Security (NTMS)
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