Results 1 to 10 of about 11,029 (248)

LSTM Attention Neural-Network-Based Signal Detection for Hybrid Modulated Faster-Than-Nyquist Optical Wireless Communications [PDF]

open access: yesSensors, 2022
In order to improve the accuracy of signal recovery after transmitting over atmospheric turbulence channel, a deep-learning-based signal detection method is proposed for a faster-than-Nyquist (FTN) hybrid modulated optical wireless communication (OWC ...
Minghua Cao   +4 more
doaj   +4 more sources

Faster-Than-Nyquist Signaling: An Overview

open access: yesIEEE Access, 2017
Faster-than-Nyquist (FTN) signaling can improve the bandwidth utilization. In this paper, we will provide a comprehensive survey on the topic. The history and the applications of FTN signaling are first introduced.
Jiancun Fan   +5 more
doaj   +4 more sources

The Evolution of Faster-Than-Nyquist Signaling [PDF]

open access: yesIEEE Access, 2021
The fifty-year progress of faster-than-Nyquist (FTN) signaling is surveyed. FTN signaling exploits non-orthogonal dense symbol packing in the time domain for the sake of increasing the data rate attained.
Takumi Ishihara   +2 more
doaj   +4 more sources

Robust Estimators for Faster-Than-Nyquist Signaling [PDF]

open access: yesIEEE Access, 2022
Novel, robust, and computationally attractive non-data-aided (NDA) and data-aided (DA) single and joint parameter estimators for faster-than-Nyquist (FTN) signaling are presented.
Zouhir Bahri
doaj   +2 more sources

Low-Complexity and Highly-Robust Chromatic Dispersion Estimation for Faster-than-Nyquist Coherent Optical Systems

open access: yesPhotonics, 2022
Faster-than-Nyquist (FTN) coherent optical transmission technology is considered to be an outstanding solution to achieve higher spectral efficiency (SE), larger capacity, and greater achievable transmission by using advanced modulation formats in ...
Tao Yang   +5 more
doaj   +3 more sources

Differential Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2018
In this paper, we propose a novel differential faster-than-Nyquist (DFTN) signaling concept that allows us to dispense with any channel estimation at the receiver, while benefiting from a rate boost specific to faster-than-Nyquist (FTN) signaling.
Takumi Ishihara, Shinya Sugiura
doaj   +2 more sources

On the Capacity of Faster Than Nyquist Signaling [PDF]

open access: yesIEEE Communications Letters, 2020
This letter considers the capacity computations of faster-than-Nyquist (FTN) signaling. It calculates the theoretical capacity of FTN signaling which is obtained by a correlated input. The capacity-achieving power spectral density (PSD) is derived and its superiority over the independent input is shown.
Xun Zou   +2 more
exaly   +4 more sources

Capacity limit for faster-than-Nyquist non-orthogonal frequency-division multiplexing signaling [PDF]

open access: yesScientific Reports, 2017
Faster-than-Nyquist (FTN) signal achieves higher spectral efficiency and capacity compared to Nyquist signal due to its smaller pulse interval or narrower subcarrier spacing. Shannon limit typically defines the upper-limit capacity of Nyquist signal.
Ji Zhou   +6 more
doaj   +2 more sources

Hexagonal Multicarrier Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2017
Multicarrier faster-than-Nyquist (MFTN) signaling is a spectral efficient modulation scheme for future communication systems. In MFTN signaling, the intersymbol interference (ISI) and intercarrier interference (ICI) are introduced intentionally by the ...
Siming Peng   +3 more
doaj   +2 more sources

Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission [PDF]

open access: yesCommunications Engineering
New applications such as the Internet of Things, autonomous driving, Industry X.0 and many more will transmit sensitive information via fibers and over the air with envisioned data rates beyond terabits per second.
Abhinand Venugopalan   +3 more
doaj   +2 more sources

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