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1. WO2020135458 - METHOD AND APPARATUS FOR MODULATING AND DEMODULATING QUADRATURE AMPLITUDE MODULATION (QAM) SIGNAL

Publication Number WO/2020/135458
Publication Date 02.07.2020
International Application No. PCT/CN2019/128102
International Filing Date 24.12.2019
IPC
H04L 27/36 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36Modulator circuits; Transmitter circuits
CPC
H04L 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
H04L 1/004
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
004by using forward error control
H04L 27/36
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36Modulator circuits; Transmitter circuits
H04L 27/38
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
38Demodulator circuits; Receiver circuits
Applicants
  • 华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • 黄远达 HUANG, Yuanda
  • 肖可鑫 XIAO, Kexin
  • 夏斌 XIA, Bin
Agents
  • 广州三环专利商标代理有限公司 SCIHEAD IP LAW FIRM
Priority Data
201811616616.626.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD AND APPARATUS FOR MODULATING AND DEMODULATING QUADRATURE AMPLITUDE MODULATION (QAM) SIGNAL
(FR) PROCÉDÉ ET APPAREIL DE MODULATION ET DÉMODULATION D'UN SIGNAL DE MODULATION D'AMPLITUDE EN QUADRATURE (MAQ)
(ZH) 一种正交振幅调制QAM信号调制和解调方法及装置
Abstract
(EN)
Disclosed is a method for modulating a quadrature amplitude modulation (QAM) signal. The modulation method comprises: performing DM encoding on N1 first bits to obtain N2 first symbols; determining N4 phase symbols to be modulated of which a signal power is a preset signal power from the N2 first symbols, and performing, on the basis of N3 second bits, phase modulation on the N4 phase symbols to be modulated to obtain N4 second symbols; performing BL encoding on the N4 second symbols and N2-N4 first symbols to obtain N5 BL encoding output bits; performing FEC encoding on the N5 BL encoding output bits to obtain N6 FEC redundant bits; and performing, on the basis of the N6 FEC redundant bits and the N5 BL encoding output bits, QAM mapping to obtain N2 target QAM signals. According to embodiments of the present invention, the complexity of the DM encoding can be reduced, and the efficiency and the applicability of a method for modulating and demodulating a probabilistic shaping of QAM signal are improved.
(FR)
L'invention concerne un procédé de modulation d'un signal de modulation d'amplitude en quadrature (MAQ). Le procédé de modulation consiste à : effectuer un codage DM sur N1 premiers bits pour obtenir N2 premiers symboles ; déterminer N4 symboles de phase à moduler dont une puissance de signal est une puissance de signal prédéfinie à partir des N2 premiers symboles, et effectuer, sur la base de N3 seconds bits, une modulation de phase sur les N4 symboles de phase à moduler pour obtenir N4 seconds symboles ; effectuer un codage BL sur les N4 seconds symboles et les N2-N4 premiers symboles pour obtenir N5 bits de sortie de codage BL ; effectuer un codage FEC sur les N5 bits de sortie de codage BL pour obtenir N6 bits redondants FEC ; et effectuer, sur la base des N6 bits redondants FEC et des N5 bits de sortie de codage BL, un mappage MAQ pour obtenir N2 signaux MAQ cibles. Des modes de réalisation de la présente invention permettent de réduire la complexité du codage DM et d'améliorer l'efficacité et l'applicabilité d'un procédé de modulation et de démodulation d'une mise en forme probabiliste du signal MAQ.
(ZH)
本发明实施例公开了一种正交振幅调制QAM信号调制方法。该调制方法包括:对N1个第一比特进行DM编码,得到N2个第一符号。从N2个第一符号中确定出信号功率为预设信号功率的N4个待调相符号,并基于N3个第二比特对N4个待调相符号进行相位调制,得到N4个第二符号。对N4个第二符号和N2-N4个第一符号进行BL编码,以得到N5个BL编码输出比特。对N5个BL编码输出比特进行FEC编码,得到N6个FEC冗余比特。基于N6个FEC冗余比特和N5个BL编码输出比特进行QAM映射,得到N2个目标QAM信号。采用本发明实施例,可降低DM编码的复杂度,提升基于概率整形的QAM信号调制和解调方法的效率和适用性。
Also published as
EP2019902651
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