Results 11 to 20 of about 136,074 (335)

10 Mb/s visible light transmission system using a polymer light-emitting diode with orthogonal frequency division multiplexing [PDF]

open access: greenOptics Letters, 2014
We present a newly designed polymer light-emitting diode with a bandwidth of ~350  kHz for high-speed visible light communications. Using this new polymer light-emitting diode as a transmitter, we have achieved a record transmission speed of 10  Mb/s for
Son Thai Le   +11 more
openalex   +2 more sources

Undersampling in Orthogonal Frequency Division Multiplexing Telecommunication Systems [PDF]

open access: yesApplied Sciences, 2014
Several techniques have been proposed that attempt to reconstruct a sparse signal from fewer samples than the ones required by the Nyquist theorem.
Nikos Petrellis
doaj   +3 more sources

Chaotic-based Orthogonal Frequency Division Multiplexing with Index Modulation

open access: goldJournal of Telecommunications and Information Technology, 2022
Orthogonal frequency division multiplexing with index modulation (OFDM-IM), stands out among conventional communication technologies, as it uses the indices of the available transmit entities. Thanks to such an approach, it offers a novel method for the
Sura H. Hussien, Hamsa A. Abdullah
doaj   +3 more sources

Enhanced Orthogonal Frequency-Division Multiplexing With Subcarrier Number Modulation [PDF]

open access: yesIEEE Internet of Things Journal, 2019
A novel modulation scheme termed orthogonal frequency-division multiplexing with subcarrier number modulation (OFDM-SNM) has been proposed and regarded as one of the promising candidate modulation schemes for next generation networks.
Shuping Dang   +3 more
semanticscholar   +6 more sources

Orthogonal frequency division multiplexing [PDF]

open access: yes, 2016
The contribution serves as a preview of the OFDM modulation signal, which is used in cellular and other wireless networks. We look closer on this problem and we are subsequently discussed general topics.
Marcaník, Miroslav   +2 more
core   +2 more sources

New Fast Transform for Orthogonal Frequency Division Multiplexing

open access: green, 2023
In this paper, a new fast and low complexity transform is introduced for orthogonal frequency division multiplexing (OFDM) wireless systems. The new transform combines the effects of fast complex-Walsh-Hadamard transform (CHT) and the fast Fourier ...
Ahmed, Mohammed Sh.   +2 more
core   +3 more sources

Green optical orthogonal frequency-division multiplexing networks

open access: yesIET Optoelectronics, 2014
Orthogonal frequency-division multiplexing (OFDM) has been proposed as an enabling technique for elastic optical networks to support heterogeneous traffic demands by enabling rate and modulation adaptive bandwidth allocation.
T. El-Gorashi   +2 more
semanticscholar   +3 more sources

Modelling the satellite communication links with orthogonal frequency-division multiplexing

open access: yesTransport, 2016
Global technologies of data transmission in real time are developing constantly. Therefore, modelling of messages transmission through satellite constellations is an actual problem.
Volodymir Kharchenko   +3 more
doaj   +5 more sources

Coherent optical orthogonal frequency division multiplexing

open access: yesElectronics Letters, 2006
Coherent optical orthogonal frequency division multiplexing is proposed to combat dispersion in optical media. It is shown that optical-signal-to-noise ratio penalty at 10 Gbit/s is maintained below 2 dB for 3000 km transmission of standard-singlemode ...
W. Shieh, C. Athaudage
semanticscholar   +3 more sources

Interleave Frequency Division Multiplexing [PDF]

open access: yesarXiv
In this letter, we study interleave frequency division multiplexing (IFDM) for multicarrier modulation in static multipath and mobile time-varying channels, which outperforms orthogonal frequency division multiplexing (OFDM), orthogonal time frequency ...
Chen, Xuehui   +5 more
core   +1 more source

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