电子学报 ›› 2016, Vol. 44 ›› Issue (5): 1258-1264.DOI: 10.3969/j.issn.0372-2112.2016.05.036

• 科研通信 • 上一篇    下一篇

一种基于高阶累积量的正交空时分组码盲识别方法

闫文君1, 张立民2, 凌青1, 孔东明3   

  1. 1. 海军航空工程学院电子信息工程系, 山东烟台 264001;
    2. 海军航空工程学院融合所, 山东烟台 264001;
    3. 海军装备部, 山西太原 030027
  • 收稿日期:2014-11-02 修回日期:2015-02-16 出版日期:2016-05-25 发布日期:2016-05-25
  • 作者简介:闫文君 男,1986年生于山东莱州.海军航空工程学院电子信息工程系博士研究生,研究方向为空时分组码检测、MIMO技术.E-mail:wj_yan@foxmail.com;张立民 男,1966年生于辽宁开原.2005年获天津大学信号与信息处理专业博士学位,现为海军航空工程学院融合所教授,研究方向为卫星信号处理、武器系统仿真等.
  • 基金资助:

    国家自然科学基金(No.61102167);泰山学者工程专项经费资助

A Method for Blind Recognition of Orthogonal Space-Time Block Coding(STBC) Using Higher-Order Cumulants

YAN Wen-jun1, ZHANG Li-min2, LING Qing1, KONG Dong-ming3   

  1. 1. Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai, Shandong 264001, China;
    2. Institute of Information Fusion, Naval Aeronautical and Astronautical University, Yantai, Shandong 264001, China;
    3. Equipment Department of the Navy, Taiyuan, Shanxi 030027, China
  • Received:2014-11-02 Revised:2015-02-16 Online:2016-05-25 Published:2016-05-25

摘要:

针对全盲条件下正交空时分组码(OSTBC)的正交性识别问题,提出一种基于高阶累积量的OSTBC识别方法.通过对接收信号白化,在不需要信道估计的情况下,消除信道对识别结果的干扰,既减少了算法复杂度,又提高了低信噪比条件下OSTBC的识别概率;考虑实际系统中噪声对识别结果的影响,利用高阶累积量(阶数大于2)的去噪声特性,消除噪声对于STBC正交特性识别的影响;分析了两种四阶累积量的OSTBC识别特性,选取了适用于OSTBC识别的四阶累积量作为特征参数.仿真结果表明,所提出方法对于OSTBC识别问题区分性能较好.

关键词: 空时分组码, 高阶累积量, 信号识别

Abstract:

A simple method, based on higher-order cumulants, is proposed for the recognition of Orthogonal Space-time Block Code (STBC).Considering the impact of channel, we propose a method of signals whitening without estimating the channel state information.This method eliminates the channel interference for the recognition.It not only reduces the complexity of the algorithm, but also improves recognition probability ratio of Orthogonal STBC in low SNR.We use higher-order cumulants (of order greater than 2) to eliminate the impact of noise.We analyze the two fourth-order cumulants, and select the more suitable fourth-order cumulants as Characteristic parameters for the recognition.Simulation results show that the proposed method for blind recognition of Orthogonal STBC has good performance.

Key words: space-time block code(STBC), higher-order cumulants, signal classification

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