Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Kelvin J. Layton"'
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2018, Iss 1, Pp 1-12 (2018)
Abstract A new demapper is presented for communication channels that can be modeled with data-dependent noise on the received symbols. This includes optical and satellite channels with various types of distortion. The demapper incorporates the covari
Externí odkaz:
https://doaj.org/article/0804b110e9194d7ea2b46e04246b5e1f
Publikováno v:
International Journal of Satellite Communications and Networking.
The nonlinear power amplifier and the analogue output channel filter with nonconstant group delay add nonlinear and linear distortions to the satellite transmitted signal, respectively. Recently, there has been growing interest in using Wiener predis
Autor:
Marc Pierre Denis Lavenant, Dmitry Kramarev, Hidayat Soetiyono, Gottfried Lechner, Stephen Leak, Hajime Suzuki, Kelvin J. Layton, Ian Grivell, Ishtiaq Ahmad
Publikováno v:
MILCOM
Distributed transmit beamforming offers N2 -fold increase of the received power with N transmitters forming a virtual antenna array, however, it requires the transmitters to be synchronized in-phase without sharing a common wired clock reference. One
Autor:
Gottfried Lechner, Assad Akhlaq, William G. Cowley, Kelvin J. Layton, Flaviano Bagaglini, Azam Mehboob
Publikováno v:
IEEE Communications Letters. 21:1985-1988
In this letter, an efficient predistortion scheme is proposed to compensate imperfections in a satellite channel due to the nonlinear power amplifier and the output channel filter. The predistorter is a Wiener system consisting of the linear and nonl
Autor:
Stefan Kroboth, Huijun Yu, Kelvin J. Layton, Sebastian Littin, Feng Jia, Jürgen Hennig, Maxim Zaitsev
Publikováno v:
Magnetic Resonance in Medicine. 79:1181-1191
Purpose Design, implement, integrate, and characterize a customized coil system that allows for generating spatial encoding magnetic fields (SEMs) in a highly-flexible fashion. Methods A gradient coil with a high number of individual elements was des
Autor:
James C. Korte, Leigh A. Johnston, Kelvin J. Layton, Peter M. Farrell, Bahman Tahayori, Stephen Moore
Publikováno v:
Biomedical Signal Processing and Control. 33:422-428
We present a proof of principle method to reconstruct nuclear magnetic resonance spectra after perturbing the spin system with a series of Rabi modulated continuous wave excitations. This continuous wave method provides an exciting alternative to pul
Publikováno v:
ICC
In this work, a hardware testbed is proposed to validate predistortion schemes designed to compensate for imperfections in a satellite channel. Such imperfection arise due to the nonlinear power amplifier and output channel filter and it is crucial t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a3b272a02e18ef5258f7e22f8c30fa3
https://hdl.handle.net/11541.2/138437
https://hdl.handle.net/11541.2/138437
Autor:
Jochen Leupold, Stefan Kroboth, Maxim Zaitsev, Feng Jia, Huijun Yu, Kelvin J. Layton, Jon-Fredrik Nielsen, Sebastian Littin, Tony Stöcker
Publikováno v:
Magnetic Resonance in Medicine. 77:1544-1552
Purpose Implementing new magnetic resonance experiments, or sequences, often involves extensive programming on vendor-specific platforms, which can be time consuming and costly. This situation is exacerbated when research sequences need to be impleme
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2018, Iss 1, Pp 1-12 (2018)
A new demapper is presented for communication channels that can be modeled with data-dependent noise on the received symbols. This includes optical and satellite channels with various types of distortion. The demapper incorporates the covariance info
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e5da215ce00bc853ffd269bfa2bd972
https://hdl.handle.net/11541.2/132376
https://hdl.handle.net/11541.2/132376
Autor:
Jürgen Hennig, Sebastian Littin, Maxim Zaitsev, Feng Jia, Huijun Yu, Kelvin J. Layton, Stefan Kroboth
Objective: Recently, matrix gradient coils (also termed multi-coils or multi-coil arrays) were introduced for imaging and B0 shimming with 24, 48 and even 84 coil elements. However, in imaging applications, providing one amplifier per coil element is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68eb8fb5f64c07f609ace23d94c75249
https://hdl.handle.net/11541.2/128802
https://hdl.handle.net/11541.2/128802