Results 11 to 20 of about 14,260 (228)
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
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On Symbol Error Performance of Probabilistic Shaping in Noise-Limited and Fading Channels
IEEE Open Journal of the Communications Society, 2023 In this work, we present symbol error performance analysis of probabilistic shaping (PS) for wireless communications in noise-limited and fading channels. Two fading models considered are the Rayleigh and log-normal fading channels.
Tilahun Zerihun Gutema +2 more
doaj +1 more source
IEEE Photonics Journal, 2020 We experimentally demonstrate the transmission performance of the bit-loading discrete multi-tone (DMT) signal in intensity modulation and direct detection (IM-DD) system with a transmission distance of 2km and a net data rate of 108-Gb/s by two ...
Junjie Ding, Jiao Zhang, Jianjun Yu
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Probabilistically-Shaped DMT for IM-DD Systems with Low-Complexity Fast WHT-Based PDSP
Photonics, 2022 Transmission capacity and receiver sensitivity of an intensity-modulation direct detection (IM-DD) optical discrete multi-tone (DMT) system can be improved by using the probabilistically shaping (PS) technique.
Yi Liu +4 more
doaj +1 more source
Performance Comparison of PS Star-16QAM and PS Square-Shaped 16QAM (Square-16QAM)
IEEE Photonics Journal, 2017 We investigate and compare the performance of star-shaped 16-ary quadrature amplitude modulation (Star-16QAM) and square-shaped 16QAM (Square-16QAM) in the probabilistic shaping (PS) and uniform schemes with coherent detection.
Bo Liu +7 more
doaj +1 more source
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
Probabilistic Shaping for Finite Blocklengths: Distribution Matching and Sphere Shaping [PDF]
, 2019 In this paper, we provide for the first time a systematic comparison of distribution matching (DM) and sphere shaping (SpSh) algorithms for short blocklength probabilistic amplitude shaping.
Alvarado, Alex +3 more
core +2 more sources
Flexible Probabilistic Shaping PON Based on Ladder-Type Probability Model
IEEE Access, 2020 We firstly propose a novel flexible multi-rate passive optical network (PON) employing ladder-type probabilistic shaping (PS) to enable adjustable and flexible multi-rate access without changing the modulation formats.
Ying Zhang +4 more
doaj +1 more source
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
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Applied Sciences, 2020 Probabilistic shaping (PS) is a powerful tool that can realize a flexible data rate and high spectrum efficiency. However, the performance of PS is closely related to the quadrature amplitude modulation (QAM) order, source entropy (SE), normalized ...
Peng Zou +3 more
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