Frontiers of Electrical and Electronic Engineering >

2007 , Vol. 2 >Issue 4: 395 - 399

DOI: https://doi.org/10.1007/s11460-007-0073-0

Near theoretical upper bound new loosely synchronous complementary spreading sequences

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  • Key Laboratory of Information Processing and Intelligent Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Published date: 05 Dec 2007

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Abstract

A new class of loosely synchronous (LS) spreading sequences with zero correlation window (ZCW) was presented. It was constructed by making Kronecker product of orthogonal matrix and ZCW complementary sequences. This new LS sequence increases the number of perfect complementary pairs and extends ZCW within the same group. Moreover, both auto-correlation and cross-correlation of ZCW in the same group remain identical. The minimum ZCW among different groups is the same as that of basic LS sequences. The method for constructing these new LS sequences is presented and ZCW properties are also verified. The number of these new LS sequences is only smaller than theoretical upper bound by one.

Cite this article

YU Zheng, YANG Xing, ZOU Yongzhong, LI Daoben, SUN Yuhao . Near theoretical upper bound new loosely synchronous complementary spreading sequences[J]. Frontiers of Electrical and Electronic Engineering, 2007 , 2(4) : 395 -399 . DOI: 10.1007/s11460-007-0073-0

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