Results 11 to 20 of about 77,307 (275)
Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]
Journal of Lightwave Technology, 2016 In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco +7 more
core +4 more sources
Performance-Enhanced DMT System With Joint Precoding and Probabilistic Constellation Shaping
IEEE Photonics Journal, 2021 The promising solution for short-reach optical communication, discrete multitone (DMT) system suffer from high peak-to-average power ratio (PAPR).
Tianhao Tong +6 more
doaj +1 more source
A Simple Sign-Bit Probabilistic Shaping Scheme [PDF]
IEEE Communications Letters, 2022 We propose a new shaping scheme for the Gaussian channel whose complexity is approximately half the one of a binary distribution matcher (DM). The result is obtained as follows: We first show that most of the shaping gain can be obtained via a simplified version of sign-bit shaping, which uses only two non-uniform binary sources.
Vincent Corlay, Nicolas Gresset
openaire +2 more sources
Applied Sciences, 2021 Probabilistic shaping (PS) is a promising technique to approach the Shannon limit. In this paper, we design a practical coded modulation scheme based on PS to improve the capacity of coherent free-space optical (FSO) links with quadrature amplitude ...
Ruotong Tian +4 more
doaj +1 more source
EMF-Aware Probabilistic Shaping Design for Hardware-Distorted Communication Systems
Frontiers in Communications and Networks, 2022 The fifth-generation cellular network requires dense installation of radio base stations (BS) to support the ever-increasing demands of high throughput and coverage. The ongoing deployment has triggered some health concerns among the community.
Sidrah Javed +4 more
doaj +1 more source
Probabilistic Constellation Shaping for Molecular Communications
IEEE Transactions on Communications, 2023 Molecular communication (MC) is an emerging field aiming at realizing information exchange via chemical signals between nanomachines in nanonetworks. Information transmission that is energy-efficient and relies on relatively low-complexity transceiver techniques is of practical importance for MC systems. Based on the fact that constellation shaping can
Yuankun Tang +5 more
openaire +3 more sources
Probabilistic shaping and non-binary codes [PDF]
2017 IEEE International Symposium on Information Theory (ISIT), 2017 We generalize probabilistic amplitude shaping (PAS) with binary codes to the case of non-binary codes defined over prime finite fields. Firstly, we introduce probabilistic shaping via time sharing where shaping applies to information symbols only. Then, we design circular quadrature amplitude modulations (CQAM) that allow to directly generalize PAS to ...
Boutros, Joseph J. +2 more
openaire +2 more sources
Complete probabilistic analysis of RNA shapes [PDF]
BMC Biology, 2006 Abstract Background Soon after the first algorithms for RNA folding became available, it was recognised that the prediction of only one energetically optimal structure is insufficient to achieve reliable results.
Voß, Björn +2 more
openaire +3 more sources
Photonics, 2022 In this paper, we propose an Extended Kalman Filtering with phase noise reconstruction (EKF-PC) scheme to enhance the carrier recovery capability for probabilistic shaping of coherent optical communication systems with various shaping factors.
Shiqun Zhang, Jiarun Yan, Zhiping Huang
doaj +1 more source
Two-Dimensional Constellation Shaping in Fiber-Optic Communications
Applied Sciences, 2019 Constellation shaping has been widely used in optical communication systems. We review recent advances in two-dimensional constellation shaping technologies for fiber-optic communications. The system architectures that are discussed include probabilistic
Zhen Qu +2 more
doaj +1 more source