Probabilistic Shaping for Finite Blocklengths: Distribution Matching and Sphere Shaping [PDF]
Entropy, 2020 In this paper, we provide a systematic comparison of distribution matching (DM) and sphere shaping (SpSh) algorithms for short blocklength probabilistic amplitude shaping. For asymptotically large blocklengths, constant composition distribution matching (
Yunus Can Gültekin +3 more
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A Nonbinary LDPC-Coded Probabilistic Shaping Scheme for a Rayleigh Fading Channel [PDF]
Entropy, 2022 In this paper, a novel, nonbinary (NB) LDPC-coded probabilistic shaping (PS) scheme for a Rayleigh fading channel is proposed. For the NB LDPC-coded PS scheme in Rayleigh fading channel, the rotation angle of 16 quadrature amplitude modulation (QAM ...
Weimin Kang
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Hierarchical Distribution Matching for Probabilistic Amplitude Shaping [PDF]
Entropy, 2020 Probabilistic amplitude shaping—implemented through a distribution matcher (DM)—is an effective approach to enhance the performance and the flexibility of bandwidth-efficient coded modulations. Different DM structures have been proposed in the literature.
Stella Civelli, Marco Secondini
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Designand Implementation of a Novel Wideband HF Communication System Based on NC-OFDM and Probabilistic Shaping [PDF]
SensorsThis paper proposes a novel wideband high-frequency (HF) communication system supporting video transmission based on non-contiguous orthogonal frequency division multiplexing (NC-OFDM) and probabilistic shaping (PS).
Rifei Yang, Yong Bai, Zhuhua Hu
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Optimization of Probabilistic Shaping for Nonlinear Fiber Channels with Non-Gaussian Noise [PDF]
Entropy, 2020 Probabilistic constellation shaping is investigated in the context of nonlinear fiber optic communication channels. Based on a general framework, different link types are considered—1. dispersion-managed channels, 2.
Henrik Enggaard Hansen +3 more
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Adaptive Bit-Labeling Design for Probabilistic Shaping Based on Residual Source Redundancy [PDF]
Entropy, 2023 By using the residual source redundancy to achieve the shaping gain, a joint source-channel coded modulation (JSCCM) system has been proposed as a new solution for probabilistic amplitude shaping (PAS).
Chen Chen +3 more
doaj +2 more sources
Probabilistic Signal Shaping for Bit-Metric Decoding [PDF]
2014 IEEE International Symposium on Information Theory, 2014 A scheme is proposed that combines probabilistic signal shaping with bit-metric decoding. The transmitter generates symbols according to a distribution on the channel input alphabet. The symbols are labeled by bit strings.
Böcherer, Georg
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Bit-Level Construction for Multiplicative-Repetition-Based Non-Binary Polar Codes [PDF]
EntropyIn this paper, we discuss non-binary polar codes using a 2×2 matrix over a Galois field GF(2q) as the kernel. Conventional construction of non-binary polar codes divides the synthesized channels into frozen channels and information channels.
Rongchi Xu +4 more
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Non-probabilistic fermionic limit shapes [PDF]
Journal of Statistical Mechanics: Theory and Experiment, 2021 Abstract We study a translational invariant free fermions model in imaginary time, with nearest neighbor and next-nearest neighbor hopping terms, for a class of inhomogeneous boundary conditions. This model is known to give rise to limit shapes and arctic curves, in the absence of the next-nearest neighbor perturbation.
Bocini, Saverio, Stéphan, Jean-Marie
openaire +3 more sources
Sensitivity Gains by Mismatched Probabilistic Shaping for Optical Communication Systems [PDF]
, 2015 Probabilistic shaping of quadrature amplitude modulation (QAM) is used to enhance the sensitivity of an optical communication system. Sensitivity gains of 0.43 dB and 0.8 dB are demonstrated in back-to-back experiments by shaping of 16QAM and 64QAM ...
Alvarado, Alex +5 more
core +12 more sources