Research on Technology of Spread Spectrum Code Acquisition Based on Digital Matched Filter
Yuan Yan · Radio and communications technology · 2013
This paper introduces and analyzes the digital implementation method of matched filter. In the condition of longer spread spectrum code,the Digital Matched Filter( DMF) consumes more hardware resource. Aiming at this problem,this paper puts forward an differential solution. By using this solution,the complexity of hardware of DMF can be significantly decreased without performance reduction. Aiming at the problem that DMF is too sensitive to Doppler frequency shift,the windowed solution is proposed to realize the less attenuation of output gain under the same Doppler frequency shift. The simulation results prove the superiority of the improved scheme.