电子学报2016，Vol.44Issue(11)：2802-2806,5.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
Hierarchical Modu lation Classification of Space-Ti me Block Codes with a Single Receive Antenna
摘要
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 constel-lations 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,un-like 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 e-ven at a low signal to noise ratio (SNR).关键词
空时分组码/调制识别/单接收天线/初等四阶累积量Key words
space-time block codes (STBCs)/modulation classification/single receiver antenna/elementary fourth-order cumulants分类
信息技术与安全科学引用本文复制引用
凌青,张立民,闫文君,邓向阳..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):2802-2806,5.基金项目
国家自然科学基金（No．61102167）；泰山学者工程专项经费资助 （）
