Results 11 to 20 of about 61,871 (287)

Reduced-Complexity FFT-Spread Multicarrier Faster-Than-Nyquist Signaling in Frequency-Selective Fading Channel

open access: yesIEEE Open Journal of the Communications Society, 2022
In this paper, we propose novel reduced-complexity fast Fourier transform (FFT)-spread multicarrier faster-than-Nyquist (MFTN) signaling with power allocation for a frequency-selective fading channel.
Takumi Ishihara, Shinya Sugiura
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

A Very Low Complexity Successive Symbol-by-Symbol Sequence Estimator for Faster-Than-Nyquist Signaling [PDF]

open access: yesIEEE Access, 2017
In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity sequence estimation techniques based on concepts of successive interference
Ebrahim Bedeer   +2 more
doaj   +2 more sources

Adaptive Damping Log-Domain Message-Passing Algorithm for FTN-OTFS in V2X Communications [PDF]

open access: yesSensors
To enable highly reliable and spectrum-efficient vehicle-to-everything (V2X) communications under conditions with severe Doppler effects and rapidly time-varying channels, we propose a novel faster-than-Nyquist orthogonal time frequency space (FTN-OTFS ...
Hui Xu   +4 more
doaj   +2 more sources

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
exaly   +2 more sources

Filter Optimization for MFTN-OQAM Systems

open access: yesIEEE Access, 2022
In this paper, a novel and effective method for designing the pulse shaping filter for multicarrier faster-than-Nyquist with offset quadrature amplitude modulation (MFTN-OQAM) systems is proposed.
Nghia H. Nguyen   +2 more
doaj   +1 more source

Coordinate Interleaved Faster-Than-Nyquist Signaling

open access: yesIEEE Communications Letters, 2023
Faster-than-Nyquist (FTN) signaling is an attractive transmission technique which accelerates data symbols beyond the Nyquist rate to improve the spectral efficiency; however, at the expense of higher computational complexity to remove the introduced intersymbol interference (ISI). In this work, we introduce a novel FTN signaling transmission technique,
Adem Çiçek   +4 more
openaire   +4 more sources

On coding for Faster-Than-Nyquist signaling [PDF]

open access: yes2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2015
In this paper, we study the design of sparse graph based codes for Faster-Than-Nyquist (FTN) signaling. Using an asymptotic approach based on EXIT charts, we show that good low-density parity check codes can be designed that perform well under iterative detection and decoding and that have better performance than a FTN scheme using a code optimized for
Tajan, Romain   +3 more
openaire   +2 more sources

A Transmission Scheme Based on Uniform Shortening LDPC Codes for Performance Improvement in Faster-Than-Nyquist Systems

open access: yesIEEE Access, 2022
Faster-than Nyquist (FTN) signaling is a research topic that has been drawing increased attention due to its capability of improving transmission speed without the need of extra bandwidth.
Tanatsan Khantha   +4 more
doaj   +1 more source

Low-Complexity Selective Mapping Methods for Multicarrier Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2020
Multicarrier faster-than-Nyquist (MFTN) signaling is a high spectral efficiency transmission scheme, which is promising in the future communication. One of the major problems of MFTN signaling is high peak-to-average power ratio (PAPR).
Biao Cai, Aijun Liu, Xiaohu Liang
doaj   +1 more source

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