多子集零相关区序列偶/阵列偶集设计技术研究

The sequence set with zero-correlation zone (ZCZ) has been presented and researched for the QS-CDMA communication system, according to the correlation properties of spread spectrum sequence set. Meanwhile, research on the ZCZ sequence pairs set is very active since it is easier to construct and its correlation properties are similar to the ZCZ sequence set. Moreover, the ZCZ sequence (pairs) set with multiple subsets has been proposed because it can simultaneously reduce or avoid co-channel interference and adjacent cell interference in the multi-cell QS-CDMA systems...In this project, our focus is on the research of novel constructions about ZCZ sequence pairs set and ZCZ array pairs set with multiple subsets. Specifically, we will (1) construct ZCZ sequence pairs set and ZCZ array pairs set with multiple subsets, according to some excellent construction of typical ZCZ sequence pairs set and ZCZ array pairs set; (2) design ZCZ sequence pairs set and ZCZ array pairs set with multiple subsets based on perfect sequence (pairs) and array (pairs) by interleaved technique; (3) explore constructions of ZCZ sequence pairs set and ZCZ array pairs set with multiple subsets based on typical ZCZ sequence pairs set and ZCZ array pairs set by interleaved technique; (4) design inter-subset uncorrelated ZCZ sequence pairs set with multiple subsets based on perfect sequence (pairs) and uncorrelated ZCZ sequence (pairs) set.

针对准同步码分多址(QS-CDMA)扩频通信系统对扩频序列相关函数特性的要求，零相关区(ZCZ)序列集已被提出并被研究。而ZCZ序列偶集因具有与ZCZ序列集相似的相关函数特性且比ZCZ序列集更易构造而被广泛研究。多子集ZCZ序列(偶)集因能够使多小区QS-CDMA通信系统同时减小甚至消除共道干扰和邻小区干扰而被研究。本项目主要研究多子集ZCZ序列偶/阵列偶集的构造方法：1.参考典型ZCZ序列偶/阵列偶集的一些优秀的构造方法，研究多子集ZCZ序列偶/阵列偶集构造方法；2.基于最佳自相关序列(偶)/阵列(偶)，研究多子集ZCZ序列偶/阵列偶集的交织构造方法；3.以交织技术为桥梁，探索基于典型ZCZ序列偶/阵列偶集的多子集ZCZ序列偶/阵列偶集的构造方法；4.基于最佳自相关序列(偶)和互不相关的ZCZ序列(偶)集，研究子集间互不相关的多子集ZCZ序列偶集的构造方法。

零相关区(ZCZ)序列偶在码分多址(CDMA)、海量多输入多输出(MIMO)、正交频分复用(OFDM)、雷达及导航定位等系统中有着广泛的应用，而多子集ZCZ序列偶集因其子集间大的零互相关区(ZCCZ)，更有利于微蜂窝多小区通信系统抑制多址干扰(MAI)、多径干扰(MI)以及相邻小区间干扰，增强系统性能和容量。..本项目重点研究了基于交织技术的多子集ZCZ序列偶集构造方法。主要研究内容如下：第一，基于典型ZCZ序列/序列偶(集)，运用交织技术和正交变换，成功构造了多类多子集ZCZ序列偶集构造；第二，通过优选的基序列集——互不相关的ZCZ序列(偶)集，实现了子集间互不相关的多子集ZCZ序列偶集构造；第三，将典型ZCZ序列偶集到多子集ZCZ序列偶集的映射方法推广到ZPC序列集，得到了多子集ZPC序列集设计方法；第四，基于最佳互补序列集，利用交织技术和正交矩阵，构造了几类组间互补(IGC)码集。..多子集ZCZ序列偶集的深入研究，将对微蜂窝多小区通信系统的进一步发展和完善具有重要的理论和应用价值。