Results 21 to 30 of about 77,307 (275)
An Uplink SCMA Codebook Design Combining Probabilistic Shaping and Geometric Shaping
IEEE Access, 2020 Sparse Code Multiple Access (SCMA) is a promising non-orthogonal multiple access scheme owning to the shaping gain of its multi-dimensional codebook. Most of the existing designs of the codebook are based on geometric shaping (GS), while probabilistic ...
Chengxin Jiang, Yafeng Wang
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Applied Sciences, 2019 M-ary pulse-amplitude modulation (PAM) meets the requirements of data center communication because of its simplicity, but coarse entropy granularity cannot meet the dynamic bandwidth demands, and there is a large capacity gap between uniform formats and ...
Xiao Han +6 more
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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 +9 more
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Probabilistically Shaped PAM-8 Transmission With Simplified Volterra Equalizer
IEEE Photonics Journal, 2022 Intensity-modulation direct-detection (IM/DD) probabilistically shaped (PS) 8-level pulse-amplitude modulation (PAM) signal is promising for high-speed intra-data-center networks.
Mingyi Gao +3 more
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IEEE Access, 2019 A probabilistic shaping method based on reduced-exponentiation subset indexing and honeycomb-structured constellation optimization is proposed to compress the number of signal points in the constellation, so that the total number doesn't fit the ...
Xiangyu Wu +8 more
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Photonics, 2023 In this paper, a high-security probabilistic constellation shaping transmission scheme based on recurrent neural networks (RNNs) is proposed, in which the constellation point probabilistic distribution is generated based on recurrent neural network ...
Shuyu Zhou +13 more
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Signal Shaping for BICM at Low SNR [PDF]
, 2012 The mutual information of bit-interleaved coded modulation (BICM) systems, sometimes called the BICM capacity, is investigated at low signal-to-noise ratio (SNR), i.e., in the wideband regime. A new linear transform that depends on bits' probabilities is
Agrell, Erik, Alvarado, Alex
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Bayesian phase search for probabilistic amplitude shaping
IET Conference Proceedings, 2023 We introduce a Bayesian carrier phase recovery (CPR) algorithm which is robust against low signal-to-noise ratio scenarios. It is therefore effective for phase recovery for probabilistic amplitude shaping (PAS). Results validate that the new algorithm overcomes the degradation experienced by blind phase-search CPR for PAS.
Askari, Mohammad Taha, Lampe, Lutz
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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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Experimental Verification of Rate Flexibility and Probabilistic Shaping by 4D Signaling [PDF]
, 2018 The rate flexibility and probabilistic shaping gain of $4$-dimensional signaling is experimentally tested for short-reach, unrepeated transmission. A rate granularity of 0.5 bits/QAM symbol is achieved with a distribution matcher based on a simple look ...
Böcherer, Georg +6 more
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