一种新的非2的整数幂阶的QAM调制设计  

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

作　　者：常承伟[1] 刘荣科[1] 段瑞枫[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《电子学报》2012年第5期1039-1044,共6页Acta Electronica Sinica

基　　金：中央高校基本科研业务费专项基金(No.YWF-10-01-B24)

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.This paper proposed a novel and universal Quadratm＇e Amplitude Modulation （QAM） design whose modulation index is not the integral power of 2;it also realized the QAM mtx^ation 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 modu- lations and enrich the choices of QAM in adaptive modulation. This paper took 28QAM as an example to state the method of de- sign, 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.

关 键 词：正交幅度调制 自适应调制 调制阶数 映射规则 

分 类 号：TP911.3[自动化与计算机技术]