New constructions of quaternary low correlation zone sequence sets

• 作 者: Ma Xiuwen Kang Baoyuan Chen Zhi Li Yuelong
• 机 构: School of Computer Science and Software Engineering, Tianjin Polytechnic University,
• 出 处: The Journal of China Universities of Posts and Telecommunica
• 发表日期: 2015年05期
• 关键词: quaternary preferred nontrivial inverse quasi proof decomposed simplicity intege

Sequence sets with low correlation have very important applications in modern communication systems. As in quasi-synchronous code-division multiple access(QS-CDMA) system, sequence sets with low correlation zone(LCZ) perform better than other well-known sequence sets. Furthermore, binary or quaternary sequence sets are preferred because of their easy implementation. In this paper, based on the inverse Gray mapping and special binary sequence pairs, new quaternary LCZ sequence sets were constructed. In the LCZ, the maximum of the nontrivial autocorrelation and crosscorrelation values is 1 which show that the QS-CDMA system used the new sequences sets can control the interference in a very low level.

Sequence sets with low correlation have very important applications in modern communication systems. As in quasi-synchronous code-division multiple access (QS-CDMA) system, sequence sets with low correlation zone (LCZ) perform better than other well-known sequence sets. In this paper, based on the inverse Gray mapping and special binary sequence pairs, new quaternary LCZ sequence sets were constructed. In the LCZ, the maximum of the nontrivial autocorrelation and crosscorrelation values ​​is 1 which show that the QS-CDMA system used the new sequences sets can control the interference in a very low level.