Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (5): 900-903.doi: 10.3969/j.issn.1001-506X.2010.05.005

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Blind separation of frequency-hopping signals based on time-frequency distribution

FENG Tao1,2， YUAN Chao-wei1   

  1. (1. School of Information and Communication Engineering, Beijing Univ. of Posts and Telecommunications, Beijing 100876, China;2. 54th Inst., Chinese Electrical Science and Technology Corporation, Shijiazhuang 050081, China)
  • Online:2010-05-24 Published:2010-01-03

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Abstract:

According to the non-stationary of frequency-hopping signals, a new blind source separation method based on time-frequency distribution is proposed. The method exploits the difference in the time-frequency signatures of the sources to solve the blind source separation problem based on the joint approximate diagonalization of a combined set of time-frequency distribution matrices of mixed signals. The theoretic analysis and simulation result shows that the new method is available for blind separation of frequency-hopping signals even if all the priori knowledge is unknown. Moreover, the proposed method has an increasing robustness with respect to noise.

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