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| Design of Asymmetric Sequence Pairs Set with Zero-Correlation Zone Based on Interleaving Technique |
| Yan Li-qiang① Zeng Xiao-li② Wang Long-ye①③ Wen Hong③ |
①(School of Engineering and Technology, Tibet University, Lhasa 850000, China)
②(Research Center for Tibetan Information Technology, Tibet University, Lhasa 850000, China)
③(National Key Laboratory and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China) |
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Abstract In order to eliminate the Multiple Access Interference (MAI) and Multipath Interference (MI), and avoid inter-cell interference from adjacent cells in Quasi-Synchronous Code Division Multiple Access (QS-CDMA) system, one class of asymmetric sequences pairs with Zero-Correlation Zone (ZCZ) are proposed. Based on the interleaved technique, a new Asymmetric-ZCZ (A-ZCZ) sequence pair set can be generated from a given perfect auto-correlation sequence pair. The presented A-ZCZ sequence pairs contains of multiple subsets which are the traditional ZCZ sequence pairs. The Cross-Correlation Function (CCF) between any two sequence pairs of different subsets has a wider Zero-Cross-Correlation Zone (ZCCZ). As a benefit, the ZCZ length of A-ZCZ sequence pair set can be flexibly chosen according to the requirement of the system.
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Received: 06 January 2015
Published: 18 June 2015
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| Fund: The National Natural Science Foundation of China (61261021, 61271172); The Research Fund for the Doctoral Program of Higher Education of China (RFDP) (20120185110030, 20130185130002) |
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Corresponding Authors:
Wang Long-ye
E-mail: utibetwly@qq.com
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