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电子学报 ›› 2012, Vol. 40 ›› Issue (5): 1039-1044.DOI: 10.3969/j.issn.0372-2112.2012.05.029

• 科研通信 • 上一篇    下一篇

一种新的非2的整数幂阶的QAM调制设计

常承伟, 刘荣科, 段瑞枫   

  1. 北京航空航天大学电子信息工程学院, 北京 100191
  • 收稿日期:2011-05-30 修回日期:2012-03-26 出版日期:2012-05-25
    • 通讯作者:
    • 刘荣科
    • 基金资助:
    • 中央高校基本科研业务费专项基金 (No.YWF-10-01-B24)

A Novel Design of QAM Whose Modulation Index is not the Nth Power of 2

CHANG Cheng-wei, LIU Rong-ke, DUAN Rui-feng   

  1. School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2011-05-30 Revised:2012-03-26 Online:2012-05-25 Published:2012-05-25

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摘要： 本文提出了一种新的具有普遍适用性的调制阶数非2的整数幂的正交幅度调制(Quadrature Amplitude Modulation,QAM)设计方法,通过建立特定个连续星座点与特定长度比特序列的映射关系,实现了码速率分辨率更高的QAM调制解调,丰富了自适应调制中QAM的选择,缩小待选QAM调制的性能间隔.本文以28QAM为例说明其设计方法.

关键词: 正交幅度调制, 自适应调制, 调制阶数, 映射规则

Abstract: This paper proposed a novel and universal Quadrature Amplitude Modulation (QAM) design whose modulation index is not the integral power of 2;it also realized the QAM modulation in a higher resolution of modulation index by mapping consecutive constellations into bit sequences.The novel QAM design can reduce the gap of the performance between different modulations and enrich the choices of QAM in adaptive modulation.This paper took 28QAM as an example to state the method of design,mainly including the design of a mapping rule which made the 28 constellation points mapped into bit sequences and simulate its performances.The BER curve of 28QAM is in the middle between 24QAM and 32QAM.

Key words: QAM, adaptive modulation, modulation index, mapping rule

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