Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Thomas Wiegart"'
Publikováno v:
IEEE Transactions on Communications. 71:1271-1283
Publikováno v:
IEEE Transactions on Information Theory. 68:178-192
Several applications in communication, control, and learning require approximating target distributions to within small informational divergence (I-divergence). The additional requirement of invertibility usually leads to using encoders that are one-
Publikováno v:
2022 IEEE International Symposium on Information Theory (ISIT).
A multilevel coded modulation scheme is studied that uses solely binary polar codes and Honda-Yamamoto probabilistic shaping. The scheme is shown to achieve the capacity of discrete memoryless channels with input alphabets of cardinality a power of t
Autor:
Tobias Prinz, Thomas Wiegart, Daniel Plabst, Talha Rahman, Md Sabbir-Bin Hossain, Nebojša Stojanović, Stefano Calabrò, Norbert Hanik, Gerhard Kramer
Publikováno v:
Md Sabbir-Bin Hossain
PAM-6 transmission is considered for short-reach fiber-optic links with intensity modulation and direct detection. Experiments show that probabilistically-shaped PAM-6 and a framed-cross QAM-32 constellation outperform conventional cross QAM-32 under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2f5a3ae4af0e21628629b4ed21f6f82
http://arxiv.org/abs/2205.05460
http://arxiv.org/abs/2205.05460
Autor:
Simone Gaiarin, Thomas Wiegart, Francesco Da Ros, Metodi Plamenov Yankov, Richard D. Wesel, Fabian Steiner
Publikováno v:
Wiegart, T, Da Ros, F, Yankov, M P, Steiner, F, Gaiarin, S & Wesel, R 2020, ' Probabilistically Shaped 4-PAM for Short-Reach IM/DD Links with a Peak Power Constraint ', Journal of Lightwave Technology, vol. 39, no. 2, pp. 400-405 . https://doi.org/10.1109/JLT.2020.3029371
Probabilistic shaping for intensity modulation and direct detection (IM/DD) links is discussed and a peak power constraint determined by the limited modulation extinction ratio (ER) of optical modulators is introduced. The input distribution of 4-ary
Publikováno v:
IEEE Communications Letters. 24:2546-2550
Analytic expressions are derived for the Wiener filter (WF), also known as the linear minimum mean square error (LMMSE) estimator, for an intensity-modulation/direct-detection (IM/DD) short-haul fiber-optic communication system. The link is purely di
Publikováno v:
IEEE Communications Letters. 23:1922-1926
The probabilistic shaping scheme by Honda and Yamamoto (2013) for polar codes is used to enable power-efficient signaling for on–off keying (OOK). As OOK has a non-symmetric optimal input distribution, shaping approaches that are based on the conca
Autor:
Daniel Plabst, Tobias Prinz, Thomas Wiegart, Talha Rahman, Nebojsa Stojanovic, Stefano Calabro, Norbert Hanik, Gerhard Kramer
Spectrally efficient communication is studied for short-reach fiber-optic links with chromatic dispersion (CD) and receivers that employ direction-detection and oversampling. Achievable rates and symbol error probabilities are computed by using auxil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65e1d0c101f0ad2524a490bfe74e36d8
http://arxiv.org/abs/2111.07865
http://arxiv.org/abs/2111.07865
Autor:
Thomas Wiegart, Nebojsa Stojanovic, Talha Rahman, Daniel Plabst, Georg Böcherer, Stefano Calabro, Tobias Prinz
Publikováno v:
ISTC
Coded modulation with probabilistic amplitude shaping (PAS) is considered for intensity modulation/direct detection channels with a transmitter peak-power constraint. PAS is used to map bits to a uniform PAM-6 distribution and outperforms PAM-8 for r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a0c16e0b489924c7cd7b27c949b3801
Publikováno v:
ISIT
Polar codes are designed for parallel binary-input additive white Gaussian noise (BiAWGN) channels with an average power constraint. The two main design choices are: the mapping between codeword bits and channels of different quality, and the power a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e104474cdc37d12548590436dad6619