传输损耗条件下基于循环平稳检测的空时分组码盲识别方法

doi:10.3969/j.issn.1006-2475.2018.02.002

计算机与现代化

传输损耗条件下基于循环平稳检测的空时分组码盲识别方法

(海军航空工程学院信息融合研究所,山东烟台264001)

收稿日期:2017-05-04 出版日期:2018-03-08 发布日期:2018-03-09
作者简介:方伟（1977-），男，安徽蚌埠人，海军航空工程学院信息融合研究所副教授，博士，研究方向：系统仿真，信号处理；闫文君（1986-），男，山东莱州人，讲师，博士，研究方向：通信信号处理。
基金资助:
国家自然科学基金重大研究计划项目（91538201）；泰山学者工程专项经费资助项目（ts201511020）

Blind Recognition for STBC with Transmission Impairments Based on Cyclostationarity Test

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

Received:2017-05-04 Online:2018-03-08 Published:2018-03-09

摘要/Abstract

摘要： 针对传输损耗条件下空间复用（SM）和Alamouti空时分组码的盲识别问题，提出一种单接收天线下的基于循环平稳检测的盲识别算法。首先通过理论推导，证明Alamouti空时分组码具有循环频率的特性；然后，求取接收信号的四阶循环累积量来观察循环频率；最后使用循环平稳检测的方法，构造检测不同空时分组码循环频率的假设检验，从而对2种码的接收信号进行区分。该方法可在单接收天线下进行，蒙特卡洛仿真结果表明，该算法不需要预先知道信道信息、调制方式、载波相位和时间偏移，不需要精确知道载波频偏，识别效果较好。

关键词: 空时分组码, 循环平稳检测, 信号分类, 传输损耗, 单接收天线

Abstract: An algorithm is proposed based on fourth-order cyclostationarity to classify Spatial Multiplexing (SM) and Alamouti space-time block code (STBC) with transmission impairments when a single antenna is employed at the receiver. Firstly, we prove the feature that Alamouti STBC signals hare cyclic frequency. Secondly, the fourth-order cyclic cumulants of the received samples are calculated to observe the cyclic frequency. Thirdly, we exploit the discriminating features provided by cyclic frequency of different STBCs, and construct cyclostationarity test to detect the cyclic frequency to achieve the classification. The algorithm can work in single received antenna scenarios. Monte Carlo simulation shows that the algorithm does not require the channel state information, modulation of the transmitted signal, carrier phase and time offset. It does not need to accurately know the carrier frequency offset and performs well.

Key words: space-time block code (STBC), cyclostationarity test, signal classification, transmission impairments, single receive antenna

中图分类号:

TN911.7

方伟，闫文君，凌青,张立民. 传输损耗条件下基于循环平稳检测的空时分组码盲识别方法[J]. 计算机与现代化, doi: 10.3969/j.issn.1006-2475.2018.02.002.

FANG Wei, YAN Wen-jun, LING Qing, ZHANG Li-min. Blind Recognition for STBC with Transmission Impairments Based on Cyclostationarity Test[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2018.02.002.

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传输损耗条件下基于循环平稳检测的空时分组码盲识别方法

Blind Recognition for STBC with Transmission Impairments Based on Cyclostationarity Test

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