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非正交多载波直扩系统的DBL地址码设计
  • 期刊名称：北邮学报- v 30, n 5, October, 2007, p 46-50
  • 时间：0
  • 分类：TN929.53[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]北京邮电大学信息工程学院,北京100876
  • 相关基金：国家自然科学基金项目（90604035）
  • 相关项目：未来移动通信系统中高频谱效率的理论研究
关键词： DBL码, 零相关窗, 非正交多载波, Dao Ben labs code, zero correlation window, non-orthogonal multi-carrier
中文摘要：

为研究非正交多载波系统中DBL地址码字的构造，分析了在特定非正交多载波间隔下LS／DBL地址码的相关特性，给出了非正交多载波下码字数与载波间隔的关系以及DBL地址码扩展矩阵的选取准则，以保持DBL码原有的零相关窗特性．仿真结果表明。该构造出的DBL码在非正交多载波下检测复杂度只随载波数线性增长而性能不受影响．

英文摘要：

To design Dao Ben labs（DBL） code for non orthogonal multi-carrier direct spread（DS） systems, the LS/DBL code correlation is deduced under certain condition, and the relation between frequency gap and number of codes is discussed. Meanwhile, some rules are given for DBL expanding matrix selection to reserve the zero correlation window（ZCW） property. Simulation shows that the DBL code constructed by this way will suffer no performance loss under non orthogonal multi-carrier systems while the decoding complexity grows linearly with the number of subcarriers.

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未来移动通信系统中高频谱效率的理论研究
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