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1. CN107566312 - Quadrature amplitude modulation method and device based on loop iteration coding

Office
China
Application Number 201710822512.X
Application Date 13.09.2017
Publication Number 107566312
Publication Date 09.01.2018
Grant Number 107566312
Grant Date 06.09.2019
Publication Kind B
IPC
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 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 BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
北京邮电大学
Inventors LIU BO
刘博
XIN XIANGJUN
忻向军
ZHANG LIJIA
张丽佳
ZHANG QI
张琦
TIAN FENG
田凤
SUN YINGFU
孙英富
LI BOWEN
李博文
Agents 北京柏杉松知识产权代理事务所(普通合伙) 11413
北京柏杉松知识产权代理事务所(普通合伙) 11413
Title
(EN) Quadrature amplitude modulation method and device based on loop iteration coding
(ZH) 一种基于循环迭代编码的正交振幅调制方法及装置
Abstract
(EN)
The embodiment of the invention provides a quadrature amplitude modulation method and device based on loop iteration coding and an electronic device. The method comprises the steps of carrying out serial-to-parallel conversion on one way of input bit stream, thereby obtaining four ways of parallel bit streams; carrying out loop iteration coding processing on a first way of bit stream and a secondway of bit stream, and carrying out bit interleaving processing on a third way of bit stream and a fourth way of bit stream; for a level value of each moment in a target level signal, selecting a sub-constellation corresponding to the level value of the moment from a preset constellation diagram, for each sub-constellation corresponding to the level value of the moment, selecting target signal points corresponding to two ways of target bit values from the sub-constellation corresponding to the level value of the moment, and modulating a real part and an imaginary part of each target signal point on two carrier signals which are in mutual quadrature, thereby obtaining complex signals and finishing signal modulation. When the signal modulation is carried out through application of the schemeprovided by the embodiment of the invention, the signal transmitting power is reduced.

(ZH)
本发明实施例提供了一种基于循环迭代编码的正交振幅调制方法、装置及电子设备,该方法包括:将输入的一路比特流进行串并变换,得到四路并行的比特流;将第一路比特流与第二路比特流进行循环迭代编码处理,将第三路比特流与第四路比特流分别进行比特交织处理;针对目标电平信号中每个时刻的电平值,从预设的星座图中选择与该时刻的电平值对应的子星座,针对每个时刻的电平值对应的子星座,从该时刻的电平值对应的子星座内选择与两路目标比特值对应的目标信号点,将每个该目标信号点的实部和虚部分别调制在相互正交的两个载波信号上,得到复信号,完成信号调制。应用本发明实施例提供的方案进行信号调制时,降低了信号的发射功率。