Results 81 to 90 of about 62,657 (220)

MMSE Channel Prediction for Symbol-by-Symbol Adaptive OFDM Systems

, 2000
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.
core   +1 more source

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  

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

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  

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  

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

Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA

, 2005
The performance of a decision-directed channel estimation scheme is analyzed in the context of both OFDM and MC-CDMA systems. A difficulty associated with the employment of the Least Squares (LS) approach to the problem of a posteriori channel estimation
Akhtman, J., Hanzo, L.
core   +1 more source

Evaluating the physical layer performance of an OFDM candidate for fourth generation networks [PDF]

, 2002
In this paper, work performed under the framework of the IST SATURN project for wide area cellular OFDM is presented in the context of 4G networks.
Nix, AR, Doufexi, A, Armour, SMD, Beach, MA   +3 more
core  

Adaptive Modulation Techniques for Duplex OFDM Transmission

, 2000
The design tradeoffs of turbo-coded burst-by-burst adaptive orthogonal frequency division multiplex (OFDM) wide-band transceivers are analyzed. We demonstrate that upon aiming for a higher throughput a higher proportion of low-quality OFDM subcarriers ...
Keller, T., Hanzo, L.
core   +1 more source

Orthogonal frequency division multiplexing (OFDM) in photonic communications

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
core   +1 more source