中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (5): 45-48.doi: 10.1016/S1005-8885(15)60679-3

• Electromagnetic • 上一篇    下一篇

New constructions of quaternary low correlation zone sequence sets

马秀文,亢保元,陈志,李月龙   

  1. School of Computer Science and Software Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • 收稿日期:2014-12-01 修回日期:2015-03-24 出版日期:2015-10-30 发布日期:2015-10-30
  • 通讯作者: 马秀文 E-mail:xuebaozhuanyong@126.com

New constructions of quaternary low correlation zone sequence sets

  1. School of Computer Science and Software Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2014-12-01 Revised:2015-03-24 Online:2015-10-30 Published:2015-10-30
  • Contact: Xiu-Wen MA E-mail:xuebaozhuanyong@126.com

摘要: 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.

关键词: quasi-synchronous code-division multiple access (QS-CDMA) system, quaternary sequence set, low correlation zone, inverse Gray mapping, binary sequence pair

Abstract: 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.

Key words: quasi-synchronous code-division multiple access (QS-CDMA) system, quaternary sequence set, low correlation zone, inverse Gray mapping, binary sequence pair

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