New Sets of Zero or Low Correlation Zone Sequences via Interleaving Techniques
New Sets of Zero or Low Correlation Zone Sequences via Interleaving Techniques
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DOI：
10.1109/tit.2010.2040887
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发表时间：
2010-04
影响因子：
2.5
通讯作者：
Honggang Hu;G. Gong
中科院分区：
文献类型：
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作者：
Honggang Hu;G. Gong
具有零相关带或低相关带的序列族可用于准同步码分多址通信系统。交错技术对序列设计非常有用。本文利用交错技术和复杂Hadamard矩阵，给出了零相关区或低相关区序列族的一般构造方法。成分序列是完美或理想的两级。在两种情况下，我们构造了移位序列：1)P|L；2) P为偶，L¿P/2 (mod P)，得到参数为零相关区或低相关区的序列族（NP， MP， L, P¿），其中N为分量序列周期，M为不等价移位序列个数，¿= 0或1。导出了新结构最优的条件。文中还举例说明了这种新结构。
Sequence families with zero or low correlation zone can be used in the quasi-synchronous code-division multiple-access (QS-CDMA) communication systems. Interleaving techniques are very useful for sequence design. In this paper, we present a general construction of sequence families with zero or low correlation zone using interleaving techniques and complex Hadamard matrices. The component sequences are perfect or ideal two-level. In two cases, we construct the shift sequences: 1) P|L; 2) P is even, and L ¿ P/2 ( mod P), which results in sequence families with zero or low correlation zone of parameters (NP, MP, L, P¿), where N is the period of component sequences, M is the number of inequivalent shift sequences, and ¿ = 0 or 1. The conditions are derived under which the new construction is optimal. Some examples are also given to specify the new construction.