Results 81 to 90 of about 49,826 (236)

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

open access: yesRadioengineering, 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   +5 more
doaj  

Slow subcarrier-hopped Space Division Multiple Access OFDM systems

open access: yes, 2005
Recently Space Division Multiple Access (SDMA) assisted Multi-Input-Multi-Output (MIMO) OFDM systems invoking Multi-User Detection (MUD) techniques have attracted substantial research interests, which are capable of exploiting both transmitter ...
Ng, S.X., Jiang, M., Hanzo, L.
core  

Simulasi Pengaruh Phase Noise pada Kinerja Sistem Komunikasi Nirkabel Orthogonal Frequency Division Multiplexing (OFDM)

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2016
Orthogonal Frequency Division Multiplexing (OFDM) merupakan salah satu alternatif terbaik dalam mengurangi pengaruh lintas jamak pada komunikasi bergerak.
Ali Mustofa, Wahju Adi Priyono
doaj   +1 more source

Analisis Unjuk Kerja Sistem Digital Video Broadcast (DVB)

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2012
DVB (Digital Video Broadcasting) adalah salah satu sistem yang digunakan untuk mentransmisikan siaran TV/Video digital hingga sampai ke pengguna akhir (end-user).
Dedi Usman Effendy   +2 more
doaj   +1 more source

Superposed IM-OFDM (S-IM-OFDM): An Enhanced OFDM for Integrated Sensing and Communications

open access: yesIEEE Transactions on Vehicular Technology
Integrated sensing and communications (ISAC) is a critical enabler for emerging 6G applications, and at its core lies in the dual-functional waveform design. While orthogonal frequency division multiplexing (OFDM) has been a popular basic waveform, its primitive version falls short in sensing due to the inherent unregulated auto-correlation properties.
Zonghui Yang   +3 more
openaire   +3 more sources

Synchronization technics for OFDM systems

open access: yes, 2006
[ENGLISH] The thesis deals with the problem of synchronization in Orthogonal Frequency Division Multiplexing (OFDM) systems. This modulation technique has been in existence since 1960, however, in the last years OFDM modulation is emerged as a key ...
Fusco, Tilde
core  

Joint Decision-Directed Channel and Noise-Variance Estimation for MIMO OFDM/SDMA Systems Based on Expectation-Conditional Maximization [PDF]

open access: yes, 2011
A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multiuser multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing/space-division multiple access (OFDM/SDMA) systems, which is based on ...
Xiaomin Mu   +5 more
core   +1 more source

OFDM Ottico [PDF]

open access: yes, 2022
La tesina tratta soprattutto una tipologia di O-OFDM, il CO-OFDM, che garantisce prestazioni più elevate rispetto ai concorrenti (DDO-OFDM) nella trasmissione su lunghe distanze. Si darà innanzitutto una panoramica su quella che è la modulazione OFDM
Polizzotto, Alessandro
core  

Performance Analysis of OFDM under AWGN and Rayleigh Fading Channels Based on Software Defined Radio

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems)
Orthogonal Frequency Division Multiplexing (OFDM) is a very efficient and popular modulation technique in modern wireless communication systems. OFDM offers advantages in terms of spectrum efficiency, resistance to multi-path interference, and is able to
Ivana Arum Dimarsasi   +2 more
doaj   +1 more source

Positioning in Chinese digital television network using TDS-OFDM signals

open access: yes, 2011
Due to wide coverage and high transmission power of digital television (DTV) transmitters, DTV-based wireless positioning is a promising complementary to global positioning system.
Dai, Linglong   +7 more
core   +1 more source

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