Low-complexity method for primary synchronisation in the third generation partnership project long term evolution downlink system

2016 ◽  
Vol 10 (10) ◽  
pp. 1229-1235
Author(s):  
Faramarz Jabbarvaziri ◽  
Mostafa Alizadeh ◽  
Abdolali Abdipour ◽  
Abbas Mohammadi
Keyword(s):  
Low Complexity ◽  
Long Term Evolution ◽  
Third Generation ◽  
The Third ◽  
Term Evolution ◽  
Downlink System ◽  
Third Generation Partnership Project

scholarly journals Rendimiento de la técnica de acceso múltiple no ortogonal (NOMA) en un sistema de comunicación móvil Long-Term Evolution (LTE)

2020 ◽  
Vol 3 (1) ◽  
pp. 62-76
Keyword(s):  
Long Term Evolution ◽  
Frequency Division Multiplexing ◽  
Third Generation ◽  
Frequency Division ◽  
Time Division Multiplexing ◽  
Term Evolution ◽  
Time Division ◽  
Third Generation Partnership Project

La creciente demanda de datos a través de las redes móviles y la búsqueda de servicios más eficientes por parte de los usuarios han inducido a la generación de nuevas técnicas que incrementen la eficiencia espectral. El acceso múltiple no-ortogonal (NOMA) es una de las técnicas que están siendo evaluadas dentro del 3GPP (Third Generation Partnership Project), esta proporciona servicios a múltiples usuarios mediante multiplexación en potencia. Esta investigación evalúa el rendimiento de NOMA en sistemas LTE (Long Term Evolution) mediante simulaciones de capa física, en relación con las tecnologías de acceso múltiple ortogonales convencionales TDM (Time Division Multiplexing) y FDM (Frequency Division Multiplexing). Se compararán, además, las ganancias obtenidas, con las publicadas en la bibliografía de Advanced Television Systems Committee(ATSC) 3.0. Los resultados demuestran que NOMA es mejor que TDM en los casos que se utilice una tasa baja en el receptor móvil y una tasa media en el receptor fijo, demostrando ganancias de 3.35 y 0.25 respectivamente.

Gestión de recursos radio en comunicaciones vehiculares V2X basadas en LTE

2018 ◽  
Vol 3 (2) ◽  
pp. 5
Author(s):  
Rafael Molina-Masegosa
Keyword(s):  
Long Term Evolution ◽  
Ieee 802.11P ◽  
Seguridad Vial ◽  
Third Generation ◽  
Vehicle To Vehicle ◽  
Term Evolution ◽  
Device To Device ◽  
Los Grupos ◽  
Third Generation Partnership Project

Recientemente, se están abordando avances significativos en el ámbito de las comunicaciones vehiculares (V2X), las cuales suponen un elemento clave en la mejora de la seguridad vial en el futuro. Mientras que la tecnología con más tiempo de desarrollo para este tipo de comunicaciones es el estándar IEEE 802.11p/WAVE, el Third Generation Partnership Project (3GPP) ha estado trabajando recientemente en el soporte de la tecnología de comunicaciones celulares LTE (Long Term Evolution) para comunicaciones V2X. El primer estándar de LTE-V2X contempla comunicaciones vehículo a vehículo (Vehicle-to-Vehicle, V2V) basadas en LTE-D2D (Device-to-Device), el modo de comunicación directa de LTE. Sin embargo, el desarrollo en los grupos de trabajo del 3GPP para el soporte de comunicaciones V2X basadas en LTE continúa actualmente. Uno de los aspectos clave en el desarrollo de las comunicaciones basadas en LTE es la gestión de recursos radio. Una gestión de recursos radio eficiente y adaptada a las necesidades de las redes vehiculares tiene el potencial de mejorar el rendimiento de este tipo de comunicaciones, sin necesidad de aumentar el ancho de banda disponible. En este trabajo se pretende exponer el estado del arte actual en comunicaciones LTE-V2X, haciendo especial hincapié en las soluciones existentes para la gestión de recursos radio en este sistema.

scholarly journals Modeling and Optimization of Mobile Signal Strength in challenging Atmospheric Conditions

2021 ◽  
Author(s):  
Shilpa Choudhary ◽  
Abhishek Sharma ◽  
Kashish Srivast
Keyword(s):  
Second Generation ◽  
Network Planning ◽  
Signal Strength ◽  
Received Signal Strength ◽  
Long Term Evolution ◽  
Third Generation ◽  
Wireless Technologies ◽  
Term Evolution ◽  
Varying Environment

Abstract For the network planning in the field of telecommunication networks received signal strength plays an important role. The received signal strength gets affected due to the varying environment condition through which the signal propagates and it also depends on the distance between the location of signal transmitter and the receiver. So complete information about these parameters are very much requires for proper mobile network planning. By keeping all these challenges in mind, this study was aimed to determine the received signal strength for Long-Term Evolution (LTE), Second Generation (2G) and Third Generation (3G) wireless technologies with challenging environment conditions. All the experiments were conducted at Lajpat Nagar residential area which is located in New Delhi. During the experiments received signal strength for all the three above mentioned wireless technologies were monitored with respect to varying environment conditions (Temperature, Relative Humidity and Air quality index for Particulate Matter 2.5) and distance from the base station. Later the optimization of received signal strength was carried out by using response surface methodology. Measurement results showed that Second Generation (2G) signal strengths was significantly higher than Third Generation (3G) and Long-Term Evolution (LTE) and the best values obtained for received signal strength for Long-Term Evolution (LTE), Third Generation (3G) and Second Generation (2G) were -77.9264dBm, -60.0345dBm and -58.1280dBm respectively. ANOVA results shows good mathematical modeling between input and output responses.

scholarly journals Performance Evaluation of MIMO-OFDM Modeling for UMTS-Long Term Evolution Downlink System

2012 ◽  
Vol 38 ◽  
pp. 607-612
Author(s):  
N.R. Raajan ◽  
A. Jenifer Philomina ◽  
S. Suganya ◽  
B. Monisha ◽  
M.V. Priya ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Long Term Evolution ◽  
Term Evolution ◽  
Mimo Ofdm ◽  
Downlink System

scholarly journals RESOURCE ELEMENT-LEVEL DIMENSIONING OF LONG TERM EVOLUTION NETWORKS

2013 ◽  
Author(s):  
Arshed Oudah
Keyword(s):  
Long Term Evolution ◽  
Mobile Telecommunications ◽  
Element Level ◽  
Lte Networks ◽  
The Third ◽  
Term Evolution ◽  
Air Interface ◽  
Universal Mobile Telecommunications System ◽  
Cellular Technology

Long Term Evolution (LTE) of Universal Mobile Telecommunications System (UMTS) is the latest cellular technology coined by the third Generation Partnership Project (3GPP) and is currently being deployed worldwide. a crucial step towards the successful deployment scenarios of LTE networks is through the use of accurate budgetary and coverage dimensioning formulas of LTE’s physical air-interface channels and signals to guarantee favourable cell footprint and other capacity targets. In this paper, the total physical downlink resources along with their associated powers are derived and computed. Their corresponding overheads are also presented. The provided formulas serve in various network dimensioning campaigns of the LTE systems.  

Sign in / Sign up

Export Citation Format

Share Document