Title:
DEMODULATION OF MODULATION CONSTELLATIONS WITH PROBABILISTIC AMPLITUDE SHAPING
Document Type and Number:
WIPO Patent Application WO/2022/222094
Kind Code:
A1
Abstract:
Methods, systems, and devices for wireless communications are described in which a receiving device, such as a base station or user equipment (UE), may receive an input signal that is modulated according to a probabilistic amplitude shaping (PAS) modulation technique. The receiving device may determine an associated channel noise estimate and may scale the input signal and the channel noise estimate based on a probability distribution parameter that is associated with the PAS modulation. The receiving device may demap the modulation constellation of the input signal based on the scaled input signal and the scaled channel noise estimate and provide one or more bits associated with the PAS modulated constellation. The probability distribution parameter may be estimated at the receiving device, or the transmitting device may provide the probability distribution parameter to the receiving device.
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Inventors:
WU LIANGMING (US)
RICHARDSON THOMAS JOSEPH (US)
XIAO KEXIN (US)
XU CHANGLONG (US)
SHENTAL ORI (US)
XU HAO (US)
RICHARDSON THOMAS JOSEPH (US)
XIAO KEXIN (US)
XU CHANGLONG (US)
SHENTAL ORI (US)
XU HAO (US)
Application Number:
PCT/CN2021/088932
Publication Date:
October 27, 2022
Filing Date:
April 22, 2021
Export Citation:
Assignee:
QUALCOMM INC (US)
WU LIANGMING (CN)
RICHARDSON THOMAS JOSEPH (US)
XIAO KEXIN (CN)
XU CHANGLONG (CN)
SHENTAL ORI (US)
XU HAO (CN)
WU LIANGMING (CN)
RICHARDSON THOMAS JOSEPH (US)
XIAO KEXIN (CN)
XU CHANGLONG (CN)
SHENTAL ORI (US)
XU HAO (CN)
International Classes:
H04B1/00; H04L27/34; H04B10/00; H04L5/00; H04L25/02; H04L25/03; H04L27/26; H04L27/36
Foreign References:
| GB2531367A | 2016-04-20 | |||
| EP3706379A1 | 2020-09-09 |
Other References:
CHO JUNHO ET AL: "Probabilistic Constellation Shaping for Optical Fiber Communications", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE, USA, vol. 37, no. 6, 15 March 2019 (2019-03-15), pages 1590 - 1607, XP011717096, ISSN: 0733-8724, [retrieved on 20190329], DOI: 10.1109/JLT.2019.2898855
CAI JIN-XING ET AL: "Performance Comparison of Probabilistically Shaped QAM Formats and Hybrid Shaped APSK Formats With Coded Modulation", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE, USA, vol. 38, no. 12, 13 March 2020 (2020-03-13), pages 3280 - 3288, XP011792105, ISSN: 0733-8724, [retrieved on 20200608], DOI: 10.1109/JLT.2020.2980449
CAI JIN-XING ET AL: "Performance Comparison of Probabilistically Shaped QAM Formats and Hybrid Shaped APSK Formats With Coded Modulation", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE, USA, vol. 38, no. 12, 13 March 2020 (2020-03-13), pages 3280 - 3288, XP011792105, ISSN: 0733-8724, [retrieved on 20200608], DOI: 10.1109/JLT.2020.2980449
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
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