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Adaptive Interference Excision in Digital Spread Spectrum Communication Systems Based on Wavelet Packet Transform

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3 Author(s)
Yu Jiang ; Harbin Eng. Univ., Harbin ; Hong-you Gao ; Shao-peng Yu

Input signals decomposition in digital spread spectrum communication systems(DSSS) is researched with discrete wavelet packet transform, the principle for wavelet packet transform suppressing narrow-band interference is analyzed, the former algorithm is optimized and the corresponding adaptive interference suppression technique is presented. The adaptive filtering technique is adopted to replace sub-band excision which tracks the narrow-band interference, avoiding the useful signal lost and suppressing the narrow-band interference effectively. The research results show that the adaptive wavelet packet transform based on tree structure algorithm has the merits in performance and fast interference allocation speed than the traditional sub-band excision.

Published in:

Machine Learning and Cybernetics, 2007 International Conference on  (Volume:6 )

Date of Conference:

19-22 Aug. 2007

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