北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (4): 33-38.doi: 10.13190/jbupt.201304.31.liumd

• 论文 • 上一篇    下一篇

并行组合扩频系统中Gold序列代数和相关性及优选

刘明夺1, 郭黎利1, 姜晓斐2   

  1. 1. 哈尔滨工程大学 信息与通信工程学院, 哈尔滨 150001;
    2. 中国电子科技集团第54研究所 微波散射部, 石家庄 050001
  • 收稿日期:2012-11-24 出版日期:2013-08-31 发布日期:2013-05-22
  • 作者简介:刘明夺(1984—),女,博士生,E-mail:xiaoduo_911@163.com;郭黎利(1955—),男,教授,博士生导师.
  • 基金资助:

    国家自然科学基金项目(61271263)

Correlation of Superposition Gold Sequences and Optimized Sequences Selection in Parallel Combinatory Spread Spectrum System

LIU Ming-duo1, GUO Li-li1, JIANG Xiao-fei2   

  1. 1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China;
    2. Microwave Scattering Department, The 54 Institute of China Electronic Technology Group Corporation, Shijiazhuang 050001, China
  • Received:2012-11-24 Online:2013-08-31 Published:2013-05-22

摘要:

提出了序列代数和相关特性的概念,采用此概念对Gold序列的代数和序列相关性进行了分析,并给出了一种Gold序列的优选方法. 针对Gold代数和序列非零时延处互相关函数具有多值且峰值较大的特点,从减小序列异步时序列代数和互相关峰值干扰的角度出发,优选出具有较小代数和互相关特征峰值序列. 结果表明,在并行组合扩频系统序列异步的高白信道下,采用优选Gold序列集的系统误码率要低于未优选Gold序列集的系统误码率.

关键词: 并行组合扩频通信系统, 相关性, Gold序列, 序列优选

Abstract:

A concept concerning correlation properties of superposition sequences is proposed. And so, an optimized selection method is proposed based on analysis of correlation properties of superposition sequences for Gold sequences. According to the property of the relatively large multiple peaks of the cross-correlation functions, the smaller cross-correlation characteristic peak values of superposition sequences are optimized to decrease mutual interference of superposition sequences in asynchronous system. It is shown that the bit error probability is lower than that of non-optimized selection Gold sequences in additive white Gaussian noise channel of the asynchronous system.

Key words: parallel combinatory spread spectrum system, correlation property, Gold sequences, optimized sequences selection

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