This paper was supported by the Fundamental Research Funds for the Central Universities (BUPT Project under Grant No.2009RC0316); the National Science Foundation of China under Ccant No. 60871081 ; Beijing Natural Science Foundation Design and fabrication of miniature smart antenna based on rnetarmterials under Crant No. 4112039, Nokia-BUPT Union Fund (2000009).
Considering the Gaussian asymptotic features of OFDM signals, the identification meth-od of it is proposed in this paper by using the cu-mulants of the wavelet transform coefficients in different layer in a low SNR ci...