计算机应用 ›› 2011, Vol. 31 ›› Issue (03): 639-642.DOI: 10.3724/SP.J.1087.2011.00639

• 网络与通信 • 上一篇    下一篇

渐近最佳LCZ序列偶集的构造

史仍辉,赵晓群,李立志   

  1. 同济大学 电子与信息工程学院
  • 收稿日期:2010-09-19 修回日期:2010-11-19 发布日期:2011-03-03 出版日期:2011-03-01
  • 通讯作者: 史仍辉
  • 作者简介:史仍辉(1981-),男,山东梁山人,博士研究生,主要研究方向:最佳信号设计、阵列偶理论、RFID;赵晓群(1962-),男,黑龙江依安人,教授,博士生导师,博士,主要研究方向:最佳信号设计、阵列偶理论、编码理论、语音信号处理、水声通信;李立志(1973-),男,湖南湘乡人,高级工程师,博士研究生,主要研究方向:语音信号处理、水声通信。

Construction of asymptotic optimal LCZ sequence pairs set

SHI Reng-hui,ZHAO Xiao-qun,LI Li-zhi   

  1. College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China
  • Received:2010-09-19 Revised:2010-11-19 Online:2011-03-03 Published:2011-03-01
  • Contact: SHI Reng-hui

摘要: 由于最佳二进序列偶的存在空间比最佳二元序列大,为进一步扩大准同步码分多址(QS-CDMA)系统的地址码选择范围,提出了两种构造渐近最佳低相关区(LCZ)序列偶集的方法。基于最佳二进序列偶与改造后的Walsh序列集(或m序列的循环移位序列集)和二元二值周期自相关序列偶的循环移位序列偶集,构造一类渐近最佳LCZ序列偶集,构造的渐进最佳LCZ序列偶集具有更多不同的参数组合,可为实际的工程应用提供更多的选择。

关键词: LCZ序列偶集, 最佳二进序列偶, 二元二值周期自相关序列偶, 渐近最佳, 理论界

Abstract: Best binary sequence pair exists in a lager scope than perfect binary sequence, for the sake of enlarging the address code selection of Quasi-Synchronization Code Division Multiple Access (QS-CDMA). Two methods of constructing sequence pairs set of asymptotic optimal Low Correlation Zone (LCZ) were proposed. A kind of asymptotic optimal LCZ sequence pairs set was constructed based on perfect binary sequence pair with modified Walsh sequences set (or m-sequence's cyclic shift sequences set) and a set generated by the cyclic shift sequences of a binary sequence pair with two-level periodic autocorrelation. The asymptotic optimal LCZ sequence pairs set constructed have more various parameters combinations. It can provide more choices for engineering application.

Key words: sequence pairs set of Low Correlation Zone (LCZ), perfect binary sequence pair, binary sequence pair with two-level periodic autocorrelation, asymptotic optimal, theory bound

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