Results 31 to 40 of about 21,014 (291)

Technologies Toward Implementation of Probabilistic Constellation Shaping [PDF]

2018 European Conference on Optical Communication (ECOC), 2018
Reverse concatenation of forward error correction and distribution matching significantly improves the implementation capability of probabilistic constellation shaping. However, to take full advantage of the benefits, one should carefully understand the practical aspects and trade-offs.
Tsuyoshi Yoshida, Magnus Karlsson, Erik Agrell   +2 more
openaire   +1 more source

Dynamic and Flexible OFDM System Based on Joint Coded Modulation

IEEE Access, 2020
An orthogonal frequency division multiplexing (OFDM) interconnected transmission system employing joint modulation of variable-order constellation compression and probabilistic shaping is proposed in this paper.
Delin Zhao, Lei Jiang, Yaya Mao, Jianxin Ren, Xing Xu, Xiangyu Wu, Shuaidong Chen, Jingyi Zhang, Shun Han, Jianye Zhao   +9 more
doaj   +1 more source

3D PCDM Probabilistic Shaping Transmission Scheme Based on Chaotic Constellation Mapping

IEEE Photonics Journal, 2023
In this article, a high-security three-dimensional (3D) probabilistic shaping optical transmission system based on prefix-free code distribution matching (PCDM) and Polar code joint coding is proposed.
Mengjie Wu, Bo Liu, Jianxin Ren, Yu Bai, Zeqian Guo, Shuyu Zhou, Yilan Ma, Gengyin Chen, Yongyi Yu, Xiangyu Wu, Yaya Mao, Feng Wang, Yongfeng Wu, Lilong Zhao   +13 more
doaj   +1 more source

Supporting Probabilistic Constellation Shaping in 5G-NR Evolution

IEEE Transactions on Wireless Communications, 2022
<p>It is well-known that probabilistic constellation shaping (PCS) provides a shaping-gain of 1.53dB asymptotically as signal-to-noie (SNR) increases. This is however, under ideal assumptions that the considered system operates in optimal sense and can achieve the Shannon capacity.
Sha Hu, Hao Wang, Sergei Semenov
openaire   +1 more source

Hierarchical Distribution Matching for Probabilistic Amplitude Shaping

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
doaj   +1 more source

Circularly Symmetric Companding Quantization-Inspired Hybrid Constellation Shaping for APSK Modulation to Increase Power Efficiency in Gaussian-Noise-Limited Channel

IEEE Access, 2021
In this paper we address hybrid probabilistic-geometric constellation shaping (HCS) of amplitude phase shift keying (APSK) constellation based on the reversed model of optimal companding quantization for circularly symmetric sources with the goal to ...
Aleksandra Z. Jovanovic, Ivan B. Djordjevic, Zoran H. Peric, Slobodan A. Vlajkov   +3 more
doaj   +1 more source

End-to-End Learning of Constellation Shaping for Optical Fiber Communication Systems

IEEE Photonics Journal, 2023
End-to-end learning based on autoencoder can realize robust constellation shaping for optical fiber communications. The existing schemes use the symbol-wise autoencoder (SAE) or bit-wise autoencoder (BAE) to realize the constellation shaping.
Wenshan Jiang, Xue Zhao, Fangfang Huang, Xiatao Huang, Taowei Jin, Hong Lin, Jing Zhang, Kun Qiu   +7 more
doaj   +1 more source

Joint Optimization of Geometric and Probabilistic Constellation Shaping for OFDM-ISAC Systems [PDF]

International Symposium on Joint Communications & Sensing
6G communications systems are expected to integrate radar-like sensing capabilities enabling novel use cases. However, integrated sensing and communications (ISAC) introduces a trade-off between communications and sensing performance because the optimal ...
Benedikt Geiger, Fan Liu, Shih-Jung Lu, Andrej Rode, Laurent Schmalen   +4 more
semanticscholar   +1 more source

Trellis-Coded Modulation-Enabled Probabilistic Shaping With Simplified Viterbi Decoder for Bandwidth-Limited IMDD Systems

IEEE Photonics Journal, 2023
In this article, trellis-coded modulation-enabled probabilistic shaping (TEPS) scheme with a simplified Viterbi decoder is proposed. Trellis-coded modulation (TCM) is embedded in the probabilistic shaping (PS) technique to improve the performance of PS ...
Han Cui, Zhongliang Sun, Xiaoqian Huang, Du Tang, Fei Xie, Yaojun Qiao   +5 more
doaj   +1 more source

Supporting Probabilistic Constellation Shaping in 5G-NR

, 2022
<p>In this paper, we consider applying probabilistic constellation shaping (PCS) to the fifth-generation new-radio (5G-NR) system. We propose a practical PCS transceiver design which is fully backward compatible to the existing 5G-NR system, and can bring significant improvements in block-error rate (BLER) and throughput.
Sergei Semnov, Hao Wang, Sha Hu
openaire   +1 more source