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1. CN111371530 - Quadrature amplitude modulation (QAM) signal modulation and demodulation method and device

Office
China
Application Number 201811616616.6
Application Date 26.12.2018
Publication Number 111371530
Publication Date 03.07.2020
Publication Kind A
IPC
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 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 H04L27/26213
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 H04L27/26213
34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
38Demodulator circuits; Receiver circuits
CPC
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
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
Applicants HAISI PHOTOELECTRON CO., LTD.
海思光电子有限公司
Inventors HUANG YUANDA
黄远达
XIAO KEXIN
肖可鑫
XIA BIN
夏斌
Agents 广州三环专利商标代理有限公司 44202
广州三环专利商标代理有限公司 44202
Title
(EN) Quadrature amplitude modulation (QAM) signal modulation and demodulation method and device
(ZH) 一种正交振幅调制QAM信号调制和解调方法及装置
Abstract
(EN)
The embodiment of the invention discloses a quadrature amplitude modulation QAM signal modulation method. The modulation method comprises the following steps: performing DM coding on N1 first bits toobtain N2 first symbols; and determining N4 to-be-modulated coincidence signals of which the signal power is the preset signal power from the N2 first symbols, and performing phase modulation on the N4 to-be-modulated coincidence signals based on the N3 second bits to obtain N4 second symbols; performing BL encoding on the N4 second symbols and the 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; performing QAM mapping based on the N6 FEC redundant bits and the N5 BL coding output bits to obtainN2 target QAM signals. By adopting the embodiment of the invention, the complexity of DM coding can be reduced, and the efficiency and applicability of the QAM signal modulation and demodulation method based on probability shaping are improved.

(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。

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