Zobrazeno 1 - 10
of 880
pro vyhledávání: '"MILLAR, DAVID"'
Autor:
Yurdakul, Celalettin, Millar, David S., Mansour, Hassan, Wang, Pu, Kojima, Keisuke, Koike-Akino, Toshiaki, Parsons, Kieran, Orlik, Philip V.
We describe a method of low-coherence interferometry based optical profilometry using standard light-emitting diode (LED) illumination and complementary metal-oxide-semiconductor (CMOS) image sensors. A line-field illumination strategy allows for the
Externí odkaz:
http://arxiv.org/abs/2202.12161
An optical gateway to convert four-level pulse amplitude modulation to quadrature phase shift keying modulation format having shaping gain was proposed for flexible intensity to phase mapping which exploits non-uniform phase noise. The power consumpt
Externí odkaz:
http://arxiv.org/abs/2102.13474
Autor:
Skvortcov, Pavel, Phillips, Ian, Forysiak, Wladek, Koike-Akino, Toshiaki, Kojima, Keisuke, Parsons, Kieran, Millar, David S.
Huffman-coded sphere shaping (HCSS) is an algorithm for finite-length probabilistic constellation shaping, which provides nearly optimal energy efficiency at low implementation complexity. In this paper, we experimentally study the nonlinear performa
Externí odkaz:
http://arxiv.org/abs/2008.02313
Oscillations in the solar atmosphere have long been observed in quiet conditions, and increasingly also in data taken during solar flares. The chromosphere is known for its 3-minute signals, which are particularly strong over sunspot umbrae. These si
Externí odkaz:
http://arxiv.org/abs/2007.10301
Autor:
Fehenberger, Tobias, Millar, David S., Koike-Akino, Toshiaki, Kojima, Keisuke, Parsons, Kieran, Griesser, Helmut
Publikováno v:
IEEE/OSA Journal of Lightwave Technology, vol. 38, no. 10, pp. 2826-2834, May 2020
In this paper, we study amplitude shaping schemes for the probabilistic amplitude shaping (PAS) framework as well as algorithms for constant-composition distribution matching (CCDM). Huffman-coded sphere shaping (HCSS) is discussed in detail, which i
Externí odkaz:
http://arxiv.org/abs/2006.07045
Autor:
Fehenberger, Tobias, Millar, David S., Koike-Akino, Toshiaki, Kojima, Keisuke, Parsons, Kieran, Griesser, Helmut
Publikováno v:
IEEE/OSA Journal of Lightwave Technology, vol. 38, no. 2, pp. 457-465, Jan 2020
In order to realize probabilistically shaped signaling within the probabilistic amplitude shaping (PAS) framework, a shaping device outputs sequences that follow a certain nonuniform distribution. In case of constant-composition (CC) distribution mat
Externí odkaz:
http://arxiv.org/abs/2006.07039
Recently, data-driven approaches motivated by modern deep learning have been applied to optical communications in place of traditional model-based counterparts. The application of deep neural networks (DNN) allows flexible statistical analysis of com
Externí odkaz:
http://arxiv.org/abs/1911.10131