Codebooks from almost difference sets

被引：39

作者：

Ding, Cunsheng ^{[1
]}

Feng, Tao ^{[2
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Comp Sci & Engn, Kowloon, Hong Kong, Peoples R China

[2] Peking Univ, Sch Math Sci, Beijing 100871, Peoples R China

来源：

DESIGNS CODES AND CRYPTOGRAPHY | 2008年 / 46卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Welch bounds; difference sets; almost difference sets; signal sets; codebooks;

D O I：

10.1007/s10623-007-9140-z

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

In direct spread CDMA systems, codebooks meeting the Welch bounds are used to distinguish among the signals of different users. Recently, constructions of codebooks with difference sets meeting Welch's bound on the maximum cross-correlation amplitude were developed. In this paper, a generic construction of codebooks using almost difference sets is considered and several classes of codebooks nearly meeting the Welch bound are obtained. The parameters of the codebooks constructed in this paper are new.

引用

页码：113 / 126

页数：14

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