单接收天线空时分组码系统的分层调制识别

doi:10.3969/j.issn.0372-2112.2016.11.033

电子学报 ›› 2016, Vol. 44 ›› Issue (11): 2802-2806.DOI: 10.3969/j.issn.0372-2112.2016.11.033

单接收天线空时分组码系统的分层调制识别

凌青, 张立民, 闫文君, 邓向阳

海军航空工程学院信息融合所, 山东烟台 264001

收稿日期:2015-07-03 修回日期:2015-09-29 出版日期:2016-11-25
- 通讯作者:
- 张立民
- 作者简介:
- 凌青,女,1987年出生,湖南衡阳人,海军航空工程学院信息融合所博士研究生,研究方向为空时分组码检测、MIMO技术.E-mail:linqing19870522@163.com
- 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

Hierarchical Modulation Classification of Space-Time Block Codes with a Single Receive Antenna

LING Qing, ZHANG Li-min, YAN Wen-jun, DENG Xiang-yang

Institute of Information Fusion, Naval Aeronautical and Astronautical University, Yantai, Shandong 264001, China

Received:2015-07-03 Revised:2015-09-29 Online:2016-11-25 Published:2016-11-25
- Supported by:
- National Natural Science Foundation of China (No.61102167); Taishan Scholars Special Funding for Construction Projects

摘要/Abstract

摘要：

针对单接收天线空时分组码系统的调制识别问题，提出了一种基于初等四阶累积量的分层调制盲识别算法.首先推导了不同信号星座在无噪声条件下的初等四阶累积量的理论值和方差，然后根据最大似然比检测求得阈值；最后比较接收信号初等四阶累积量实验值与阈值的大小盲识别调制方式.该算法不需要信道、噪声功率等先验信息，适合非合作通信场合.仿真结果表明，所提出的算法在低信噪比下能够较好的识别单接收天线空时分组码调制方式.

关键词: 空时分组码, 调制识别, 单接收天线, 初等四阶累积量

Abstract:

A method for blind classification of Space-Time Block Codes (STBCs) with a single receive antenna based on elementary fourth-order cumulants is proposed. Firstly,the theoretical values and variance of various signal constellations were obtained by computing the ensemble averages over the ideal noise-free constellation. And then the thresholds were gained by the likelihood ratio test (LRT) for the tests in the hierachical classification scheme. Finally,the automatic classification of modulation scheme was realized by comparing the experimental values and the thresholds. Furthermore,unlike other methods,this algorithm does not require any prior information of the channel coefficients,and noise power and,consequently,is well-suited for non-cooperative context. The simulation shows that the proposed algorithm performs well even at a low signal to noise ratio (SNR).

Key words: space-time block codes (STBCs), modulation classification, single receiver antenna, elementary fourth-order cumulants

中图分类号:

TN911.7

凌青, 张立民, 闫文君, 等. 单接收天线空时分组码系统的分层调制识别[J]. 电子学报, 2016, 44(11): 2802-2806.

LING Qing, ZHANG Li-min, YAN Wen-jun, et al. Hierarchical Modulation Classification of Space-Time Block Codes with a Single Receive Antenna[J]. Acta Electronica Sinica, 2016, 44(11): 2802-2806.

参考文献

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单接收天线空时分组码系统的分层调制识别

Hierarchical Modulation Classification of Space-Time Block Codes with a Single Receive Antenna

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