一种新的MM-aryM编码结构和解调方法  

A New MM-aryM Coded Construction and Demodulation Scheme

作　　者：朱有团[1] 朱近康[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《电子与信息学报》2005年第9期1450-1453,共4页Journal of Electronics & Information Technology

基　　金：国家863计划(2001AA123011)国家自然科学基金(60242003)资助课题

摘　　要：该文在研究多重准正交扩频码组构造方法的基础上,提出了构造多重准正交扩频码组的改进方法,提出了基于位置映射的一种新的调制结构和解调方法。采用新的码字分组方法和位置映射,将准正交码字的解调变成正交码字解调的组合,从而获得较好的解调性能。分析和仿真表明该方法可以明显减小接收端的计算复杂度,并且可以提高信息传送速率,降低误码率。In this paper, an improved method of constructing multiple quasi-orthogonal spreading codes and a new modulation and demodulation scheme based on position mapping are proposed on the research of methods of constructing multiple quasi-orthogonal codes, using new method of codes grouping and position mapping, and making the demodulating of the quasi-orthogonal branches into the combination of demodulating of orthogonal sequences codes, that will obtain better demodulation performance. Analysis and simulation prove that this scheme can reduce obviously the computer complexity in the receiver side. It will increase transmission speed of information and reduce bit error probability.

关 键 词：多重M-ary并行调制 多重准正交扩频码组 位置映射 

分 类 号：TN929.5[电子电信—通信与信息系统]