Results 111 to 120 of about 49,895 (236)

PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

Journal of Communications Software and Systems, 2019
Orthogonal Frequency Division Multiplexing (OFDM) is the most popular multicarrier technique because it produces several advantages such as higher spectral efficiency, high transmission rate, robustness to fading channel and etc..
Muntadher Kadhim Abdullah, Ali Jawad Ibada   +1 more
doaj  

MMSE Channel Prediction Assisted Symbol-by-Symbol Adaptive OFDM [PDF]

, 2002
Subband Adaptive Orthogonal Frequency Division Multiplexing (OFDM) constitutes an effective method of compensating for the frequency selective fading incurred by mobile receivers.
Münster, M., Hanzo, L.
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Channel Estimation in OFDM Systems with Strong Interference [PDF]

, 2010
In this paper, we investigate channel estimation algorithms in an OFDM system which is exposed to pulsed interference. It will be examined how the interference affects the performance of the channel estimation and how the channel estimation can be ...
Epple, Ulrich, Schnell, Michael
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OFDMA para Sistemas de Banda Ancha Inalámbrica

Prisma Tecnológico, 2009
Este artículo describe el sistema de Acceso Múltiple por División de Frecuencia Ortogonal (OFDMA), un método de modulación para la segunda generación de acceso a banda ancha inalámbrica.
Daniel Tuñón, Ramón Ortega
doaj  

Estudo de técnicas de formatação de feixe para transmissão OFDM [PDF]

, 2004
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia ElétricaEsta dissertação apresenta um estudo do comportamento de diversos algoritmos adaptativos capazes de realizar a formatação
Lima, Gustavo Corrêa
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A New Parametric DFT-Based OFDM Transceiver for Intrinsic Wireless Communication Encryption

Advances in Electrical and Computer Engineering
In this paper, we propose a parametric OFDM transceiver for wireless communication encryption. One of the major contributions of this work is the intrinsic encryption nature of the proposed system, since it is a completely new idea and philosophically ...
CHERGUI, L., BOUGUEZEL, S.
doaj   +1 more source

Development of Communication System between TPMS and Server using Combination of OFDM and Convolutional Code Technique Based on SDR

Jurnal Sisfokom
The Tire Pressure Monitoring System (TPMS) has evolved into an essential element of contemporary vehicles, playing a pivotal role in enhancing road safety and the overall driving experience.
Hendy Briantoro, Billy Montolalu, Ardiansyah Al Farouq   +2 more
doaj   +1 more source

Localization Using Joint AOD and RSS Method in Massive MIMO System [PDF]

Radioengineering, 2019
In this research, we propose to estimate location of mobile users by using joint angle of departure (AOD) from base station (BS) and received signal strength (RSS) at user equipment (UE) method.
W. A. Mahyiddin, A. L. A. Mazuki, K. Dimyati, M. Othman, N. Mokhtar, H. Arof   +5 more
doaj  

Generic MMSE Decision Directed Channel Estimation for OFDM and MC-CDMA [PDF]

, 2004
In this letter we propose a Minimum Mean Square Error (MMSE) Channel Impulse Response (CIR) estimator-aided Decision Directed Channel Estimation (DDCE) method, which is suitable for employment in both OFDM and MC-CDMA systems.
Akhtman, Jos, Hanzo, Lajos
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Orthogonal frequency division multiplexing (OFDM) in photonic communications [PDF]

OFDM has emerged as a promising modulation technique in long-haul and access optical networks because of a number of advantages: Scalable spectrum partitioning, good spectral efficiency, dispersion tolerance, and a natural suitability for software ...
Vallaitis, T., Ellermeyer, T., Möller, M., Ben Ezra, S., Petropoulos, P., Schellinger, T., Hillerkuss, D., Weingarten, K., Freude, W., Schmogrow, R., Marculescu, A., Bonk, R., Meyer, J., Winter, M., Nebendahl, B., Dreschmann, M., Lutz, J., Parmigiani, F., Li, J., Resan, B., Narkiss, N.   +20 more
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