›› 2016, Vol. 36 ›› Issue (4): 47-.doi: 10.16708/j.cnki.1000-758X.2016.0043

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AfullblindPIMsuppressionalgorithmforspreadspectrumTT&Clink

AN  Jin-Kun, TIAN  Lin, DING  Kai   

  1. InstituteofMannedSpaceSystemEngineering,ChinaAcademyofSpaceTechnology,Beijing100094,China
  • Received:2015-12-25 Revised:2016-04-15 Online:2016-08-25 Published:2016-05-11

Abstract: Focusingonthepassiveintermodulation(PIM)probleminspreadspectrumschemeTT&Clink,awaveletpacketdecompositionbasedfullblindPIMsuppressionalgorithmwasproposed.MultilayerswaveletpacketdecompositionwasemployedonthereceivedspreadspectrumTT&Csignals,accordingtothecharacteristicthedecomposedsignalshouldobeyGaussiandistribution,andinterferencesuppressionwasachieved,NosuppressiongatewassetduringthewholeprocessandthiswasafullblindPIMsuppressedalgorithm.Finally,Matlabsimulationresultshowsthat7dBsignalinterferenceratiogaincanbeobtained.

Key words: TT&Clink, spreadspectrum, passiveintermodulation, waveletpacket, interferencesuppression