ZCZ屏蔽序列偶集的构造方法.PDFVIP

2011年6月 北 京 邮 电 大 学 学 报 Jun.2011 第34卷 第3期 Journal of Beijing University of Posts and Telecommunications Vol.34 No.3 摇 摇 文章编号:1007鄄5321(2011)03鄄0017鄄04 ZCZ屏蔽序列偶集的构造方法 李兆斌,摇 魏占祯,摇 池亚平 (北京电子科技学院通信工程系,北京 100070) 摘要:为了拓宽准同步码分多址系统中零相关区(ZCZ)序列的设计范围,将几乎最佳屏蔽序列偶应用于ZCZ信号 设计中,提出了一种新的ZCZ屏蔽序列偶集的构造方法,并给出了利用周期乘积构造法从一个酉矩阵和一个ZCZ 屏蔽序列偶集构造出新的ZCZ屏蔽序列偶集的方法. 几乎最佳屏蔽序列偶和酉矩阵都很容易得到,因而使用所提 方法构造出的ZCZ屏蔽序列偶集具有较大的容量,可更好地满足实际工程的需要. 关摇 键摇 词:几乎最佳屏蔽序列偶;零相关区;周期乘积;酉矩阵 中图分类号:TN929郾533摇 摇 摇 摇 文献标志码:A Construction Methods of ZCZ Punctured Sequence Pairs Set LI Zhao鄄bin,摇 WEI Zhan鄄zhen,摇 CHI Ya鄄ping (Department of Communication Engineering,Beijing Electronic Science Technology Institute,Beijing 100070,China) Abstract:In order to extend the scope of zero correlation zone (ZCZ) sequence in quasi鄄synchronous code division multiple access system,an almost perfect punctured binary sequence pairs is used in zero correlation zone (ZCZ) sequence pairs,a new construction method for ZCZ signals is presented. ZCZ punctured sequencepairssetcanbegeneratedfromtheperiodicproductofunitary matrix andtheoriginal ZCZ punctured sequence pairs set. The almost perfect punctured binary sequence pairs and the unitary matrix can be easily obtained,so the capacity of ZCZ punctured sequence pairs set constructed by the proposed method is so large that they can satisfy requirements of engineering applications. Key words:almost perfect punctured sequence pairs;zero correlation zone;periodic product;unitary matrix 摇 摇 为了克服码分多址(CDMA)系统存在同步误差 ZCZ屏蔽序列偶集具有较大的容量和较长的ZCZ. 和多径干扰的问题,文献[1]提出了ZCZ 序列集的 1摇 基本定义 概念. 多种 ZCZ 序列集的构造方法也相继被提 [2鄄7]