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)
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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Yan Li-qiang, Zeng Xiao-li, Wang Long-ye, Wen Hong. Design of Asymmetric Sequence Pairs Set with Zero-Correlation Zone Based on Interleaving Technique. JEIT, 2015, 37(10): 2483-2489.
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