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Study on the Nonstationary Wideband Interference Suppression in DSSS Systems

Author: AnYingJie
Tutor: TianBin
School: Xi'an University of Electronic Science and Technology
Course: Spatial Information Science
Keywords: Interference suppression DSSS LFM PFM SFM
CLC: TN914.42
Type: Master's thesis
Year: 2009
Downloads: 22
Quote: 0
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Abstract


With the development of modern electronic countermeasures technology , communication anti-jamming technology plays an increasingly important role . With the interference of the style of the complexity of how to effectively suppress a variety of non-stationary wideband interference become an important research topic . In this paper, the on DSSS system platform , using signal processing methods , to study a variety of time-varying high-energy non-stationary interference suppression algorithm , the main work : LFM interference a the novel MDCFT the transform -based the transformation of interference suppression algorithm , theoretical analysis and simulation of the performance of the algorithm . Theoretical analysis and simulation results show that the algorithm has good interference suppression performance . 2. For PFM interference , based on LPFT transform interference suppression algorithm proposed threshold set algorithm simulation to verify the performance of the algorithm . The simulation results show that the performance of the algorithm . SFM interference , a new parameter estimation method based on the method of interference suppression algorithm , theoretical analysis and simulation of the performance of the algorithm . Simulation results show that the algorithm has a good effect of interference suppression .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication systems ( transmission system) > Frequency hopping spread spectrum communication system > Spread spectrum communication
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