Due to the neglect of the retrieval of communication parameters(including the symbol rate,the symbol timing offset,and the carrier frequency),the existing non-cooperative communication mode recognizers suffer from the...Due to the neglect of the retrieval of communication parameters(including the symbol rate,the symbol timing offset,and the carrier frequency),the existing non-cooperative communication mode recognizers suffer from the generality ability degradation and severe difficulty in distinguishing a large number of modulation modes,etc.To overcome these drawbacks,this paper proposes an efficient communication mode recognizer consisting of communication parameter estimation,the constellation diagram retrieval,and a classification network.In particular,we define a 2-D symbol synchronization metric to retrieve both the symbol rate and the symbol timing offset,whereas a constellation dispersity annealing procedure is devised to correct the carrier frequency accurately.Owing to the accurate estimation of these crucial parameters,high-regularity constellation maps can be retrieved and thus simplify the subsequent classification work.Numerical results show that the proposed communication mode recognizer acquires higher classification accuracy,stronger anti-noise robustness,and higher applicability of distinguishing multiple types,which presents the proposed scheme with vast applicable potentials in non-cooperative scenarios.展开更多
文摘Due to the neglect of the retrieval of communication parameters(including the symbol rate,the symbol timing offset,and the carrier frequency),the existing non-cooperative communication mode recognizers suffer from the generality ability degradation and severe difficulty in distinguishing a large number of modulation modes,etc.To overcome these drawbacks,this paper proposes an efficient communication mode recognizer consisting of communication parameter estimation,the constellation diagram retrieval,and a classification network.In particular,we define a 2-D symbol synchronization metric to retrieve both the symbol rate and the symbol timing offset,whereas a constellation dispersity annealing procedure is devised to correct the carrier frequency accurately.Owing to the accurate estimation of these crucial parameters,high-regularity constellation maps can be retrieved and thus simplify the subsequent classification work.Numerical results show that the proposed communication mode recognizer acquires higher classification accuracy,stronger anti-noise robustness,and higher applicability of distinguishing multiple types,which presents the proposed scheme with vast applicable potentials in non-cooperative scenarios.
