Sensitivity of mobile devices to doppler shifts and poor synchronization between UMTS transmitters
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2099.1/9873
Tutor / directorFledderus, Erik
Realitzat a/ambTechnische Universiteit Eindhoven
Tipus de documentProjecte/Treball Final de Carrera
Data2010
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
UMTS network, also known as Third Generation (3G) mobile radio system, aims to
provide services such as: mobile communication, data streaming, internet and
driving guidance. The UMTS signal uses the frequency channel of 2GHz. This
channel introduces some propagation difficulties like multipath effect, Doppler shifts
and fading. UMTS improves the well known hard-handover process from 2G
networks into the soft-handover. During the soft-handover, the mobile station is
connected to different transmitters at the same time. The bad frequency
synchronization of these transmitters creates the same propagation difficulties.
These bad effects aforementioned can affect the quality of the communication
between the Base Station and the mobile device. The thesis presents the study of
propagation effects on the received frequency and compares the results with the
synchronization requirements of the transmitters. BER simulations where done to
study the reception quality in high-speed conditions. Furthermore, we introduce a
method to reduce the impact of fast-device movement that can be used in the softhandover
procedure to reduce the effect of bad synchronization.
Descripció
Projecte final de carrera fet en col.laboració amb Technische Universiteit Eindhoven
MatèriesUniversal Mobile Telecommunications System, Radio, UMTS (Universal Mobile Telecommunication System), Ràdio
TitulacióENGINYERIA DE TELECOMUNICACIÓ (Pla 1992)
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Sensitivity of ... ler shifts and poor s….pdf | 2,237Mb | Visualitza/Obre |