分形噪聲中的信號檢測
DECTECTION OF KNOWN SIGNALS IN 1/f FRACTAL NOISE
-
摘要: 本文討論了在1/f類分形噪聲中的信號檢測問題,利用小波變換對1/f噪聲的近似白化作用,來消除1/f噪聲間的相關(guān)性。文中給出了白化濾波器的傳遞函數(shù),信號檢測的判決規(guī)則和接收系統(tǒng)結(jié)構(gòu);分析了系統(tǒng)的接收性能;最后給出了仿真實驗結(jié)果。
-
關(guān)鍵詞:
- 信號檢測; 分形; 小波分析; 1/f類噪聲
Abstract: Based on the whitening property of wavelet transformation for 1/f noise, the problem of detecting deterministic signals in the presence of 1/f fractal noise is addressed. The transfer function of whitening filter is provided, the receiver structure based on Karhunen-Loeve expansion and the decision rule are also given. Finally performance of the receiver is analyzed and the experimental results are presented. -
Keshner M S. 1/f noise[J].Proc. IEEE.1982, 70(3):212-218[2]Wornell G W. A Karhunen-Loeve-like expansion for 1/f processes via wavelets. IEEE Trans. on IT,[3]90, IT-36(4): 859-860.[4]Flandrin Patrick. Wavelet analysis and synthesis of fractional Brownian motion. IEEE Trans. on IT, 1992, IT-38(2): 910-917.[5]Stoksik M A, Lane R G, Ngugen D T. Accurate systhesis of fractional Brownian motion using wavelets, Electron. Lett., 1994, 30(5): 383-384.[6]Wornell G W. Wavelet-based representation for the 1/f family of fractional processes. Proc. IEEE,[7]93, 81(10): 1428-1450.[8]Srinatch M D.[J].Rajasekaran P K. An Introduction to Statistical Signal Processing with Applications, New York: John Wiley Sons.1979,:- -
計量
- 文章訪問數(shù): 2278
- HTML全文瀏覽量: 170
- PDF下載量: 634
- 被引次數(shù): 0
下載:
