Blind separation and modulation identification of jamming signals in communications

Author

Zhang, Luping ; Wang, Jianxin ; Ma, Ning

Author_Institution

Sch. of Electron. Eng. & Optoelectron. Technol., Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2011

fDate

9-11 Sept. 2011

Firstpage

170

Lastpage

173

Abstract

For the problem of classification for jamming signal in the normal communication channel, a modulation identification method based on blind source separation is proposed. A channel estimation is obtained with an Independent Component Analysis (ICA) in the case of multiple-antennas. Then the jamming signal is separated from the normal communication signal. The fourth order cumulant is extracted from the jamming signal and used for modulation identification. The method is robust in the presence of carrier offsets. For QPSK, 2FSK, 16QAM and 2ASK, the algorithm is simulated under several received conditions. Simulation results show the validity of the proposed method for jamming signals with different envelopes.

Keywords

amplitude shift keying; antenna arrays; blind source separation; channel estimation; frequency shift keying; independent component analysis; jamming; quadrature amplitude modulation; quadrature phase shift keying; signal classification; 16QAM modulation; 2ASK modulation; 2FSK modulation; ICA; QPSK modulation; blind source separation; channel estimation; communication channel; communication signal; fourth-order cumulant; independent component analysis; jamming signal classification; modulation identification method; multiple-antenna; Classification algorithms; Jamming; Phase shift keying; Receiving antennas; Signal to noise ratio; fourth-order cumulant; jamming signal; modulation identification; separation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communications and Control (ICECC), 2011 International Conference on

Conference_Location

Ningbo

Print_ISBN

978-1-4577-0320-1

Type

conf

DOI

10.1109/ICECC.2011.6067674

Filename

6067674