Results 61 to 70 of about 910,579 (228)

Faster-Than-Nyquist Signal Design for Multiuser Multicell Indoor Visible Light Communications

open access: yesIEEE Photonics Journal, 2016
We consider a typical indoor environment, where multiple light-emitting diode (LED) lamps are equipped, and each LED lamp is the base station of an optical cell.
Yi-Jun Zhu, Wen-Ya Wang, Gang Xin
doaj   +1 more source

Analysis of a FTN Multicarrier System: Interference Mitigation Based on Tight Gabor Frames [PDF]

open access: yes, 2017
Cognitive radio applications require flexible waveforms to overcome several challenges such as opportunistic spectrum allocation and white spaces utilization.
Marquet, Alexandre   +3 more
core   +3 more sources

Frequency-Shift Monitoring of Optical Filter Based on Optical Labels over FTN-WDM Transmission Systems

open access: yesPhotonics, 2023
Optical network monitoring and soft failure identification such as optical filter shifting and filter tightening are increasingly significant for the complex and dynamic optical networks of the future.
Kaixuan Li   +5 more
doaj   +1 more source

FTN multicarrier transmission based on tight Gabor frames [PDF]

open access: yes, 2017
A multicarrier signal can be synthesized thanks to a symbol sequence and a Gabor family (i.e., a regularly time-frequency shifted version of a generator pulse).
Marquet, Alexandre   +3 more
core   +3 more sources

Tradeoff Between Calculation Precision and Information Rate in Eigendecomposition-Based Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2020
This study measured the achievable performance of the recently developed precoded faster-than-Nyquist (FTN) signaling scheme with truncated power allocation from an information-theoretic perspective.
Keita Masaki   +2 more
doaj   +1 more source

Optimal Option of n-Level Polybinary Transformation in Faster than Nyquist System According to the Time-Packing Factor

open access: yesApplied Sciences, 2022
According to an in-depth analysis of the relationship among n-level polybinary transformation, the time-packing factor and the performance of the decoding algorithm, we find that the appropriate n-level polybinary transformation can improve the ...
Peng Sun   +3 more
doaj   +1 more source

Non Binary and Precoded Faster Than Nyquist Signaling [PDF]

open access: yesIEEE Transactions on Communications, 2008
Faster than Nyquist (FTN) signaling is an important method of narrowband coding. The concept is extended here to non binary signal constellations; these are much more bandwidth efficient than binary ones. A powerful method of finding the minimum distance for binary and non binary FTN is presented.
Fredrik Rusek, John Anderson
openaire   +1 more source

Reduced complexity optimal detection of binary faster-than-Nyquist signaling [PDF]

open access: yes, 2017
In this paper, we investigate the detection problem of binary faster-than-Nyquist (FTN) signaling and propose a novel sequence estimation technique that exploits its special structure. In particular, the proposed sequence estimation technique is based on
Ahmed, Mohamed Hossam   +2 more
core   +3 more sources

Comments on and Corrections to "SVD-Precoded Faster-Than-Nyquist Signaling With Optimal and Truncated Power Allocation"

open access: yes, 2021
This correspondence corrects the limitations of a system parameter in ``SVD-Precoded Faster-Than-Nyquist Signaling With Optimal and Truncated Power Allocation" in IEEE Transactions on Wireless Communications, vol. 18, no. 12, Dec. 2019. We do not present
T. Ishihara, S. Sugiura
semanticscholar   +1 more source

Differential Multi-Carrier Faster-Than-Nyquist Signaling in Doubly Selective Fading Channel

open access: yesIEEE Transactions on Vehicular Technology
In this article, we propose a novel concept of differentially encoded multi-carrier faster-than-Nyquist (DMFTN) signaling with noncoherent detection, which is robust against a detrimental doubly selective fading channel.
T. Ishihara, S. Sugiura
semanticscholar   +1 more source

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