| ZCZ序列偶集及大容量ZCZ序列偶集的构造 |
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| 引用本文： | 肖丽萍,李卫卫,许成谦.ZCZ序列偶集及大容量ZCZ序列偶集的构造[J].北京邮电大学学报,2010,33(5):89-93. |
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| 作者姓名： | 肖丽萍 李卫卫 许成谦 |
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| 作者单位： | 燕山大学,信息科学与工程学院,河北,秦皇岛,066004;燕山大学,信息科学与工程学院,河北,秦皇岛,066004;燕山大学,信息科学与工程学院,河北,秦皇岛,066004 |
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| 基金项目： | 国家自然科学基金项目(60872061); 河北省自然科学基金项目(F2008000855) |
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| 摘 要： | 为了降低甚至消除近似同步码分多址（AS CDMA）系统的多径干扰和多址干扰(MAI)，满足系统不断增大的用户容量需要，提出了新的零相关区（ZCZ）序列偶集及大容量ZCZ序列偶集的构造方法. 通过对最佳序列偶进行不同的移位，再与一定阶数的酉矩阵进行相关积运算，构造出了近似最优及最优2类ZCZ序列偶集；通过对已有的ZCZ序列偶集进行适当的移位再与相应的酉矩阵进行相关积运算，构造出了更大容量和更长零相关区的ZCZ序列偶集. 本文方法适用于二元、三元、四相及多相情况. 构造出的ZCZ序列偶集性能优良，在同步误差允许的范围内，能满足多用户AS CDMA系统的要求.
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| 关 键 词： | 近似同步码分多址 最佳序列偶 零相关区 相关积 酉矩阵 |
| 收稿时间： | 2009-12-16 |
Construction of ZCZ Sequence Pairs Set and ZCZ Sequence Pairs Set with Large Family Size |
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| XIAO Li-ping,LI Wei-wei,XU Cheng-qian.Construction of ZCZ Sequence Pairs Set and ZCZ Sequence Pairs Set with Large Family Size[J].Journal of Beijing University of Posts and Telecommunications,2010,33(5):89-93. |
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| Authors: | XIAO Li-ping LI Wei-wei XU Cheng-qian |
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| Affiliation: | XIAO Li-ping,LI Wei-wei,XU Cheng-qian ( School of Information Science , Engineering,Yanshan University,Hebei Qinhuangdao 066004,China) |
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| Abstract: | A New method for constructing set of zero correlation zone (ZCZ) sequence pairs and ZCZ sequence pairs with large family size is proposed. It can be used in approximately-synchronized code-division multiple-access (AS-CDMA) system for the reduction or elimination of the multipath interference and multiple access interference ( MAI) of the system. The capacity of increasing users is large with satisfactory. First,almost optimal ZCZ sequence pairs set can be generated from the correlation product of unitary m... |
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| Keywords: | approximately-synchronized code-division multiple-access perfect sequence pairs zero correlation zone correlation product unitary matrix |
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