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Design and implementation of blind adaptive interference suppression VHF receiver based on FPGA+DSP

WANG Wenyi,ZHANG Pengfei,HU Tieqiao,ZHONG Lunlong,SHI Qingyan   

  1. (Intelligent Signal and Image Processing Key Lab of Tianjin,CAUC,Tianjin 300300,China)
  • Received:2014-10-31 Revised:2014-12-22 Online:2016-02-20 Published:2016-04-13

Abstract:

Aiming at the problem that air-ground communication of civil aviation is easily disturbed by radio interference,the reasonable selection of field-programmable gate array (FPGA)and high-speed digital signal processor (DSP)are introduced to build a signal processing platform with interference suppression receiver based on blind source separation(BSS),coupling with the signal receiving circuit with RF front end which can receive VHF signal and audio processing module. The signal processing platform mainly includes a real-time complex equivariant adaptive separation vi a independence (EASI)interference suppression algorithm core components. Compared with a normal receiver which is showed in the test results,the adaptive interference suppression receiver can suppress AMor FMinterference more effectively and output clearer voice signal.

Key words: BSS, air-ground communication, interference suppression, DSP, FPGA

CLC Number: