An Efficient Signal Acquisition Method for GPS Software-Defined Radio Receivers

Ta Hai Tung
2014 Research and Development on Information and Communication Technology  
With the development of the computationalpower of programmable processors, the Software-DefinedRadio (SDR) approach for GPS receivers has been widelyconsidered. However, in comparison with the conventionalhardware receivers, the computational speed of the SDRreceivers is still a problem needed to be improved. As afirst process of the digital processing part, and also themost resource consuming process of a GPS receiver, thesignal acquisition process is very important and neededto be improved in
more » ... order to suit with the SDR approach.This paper introduces a hybrid signal acquisition methodleveraging the conventional serial search acquisition (typical in hardware receivers), and the FFT-based parallelsearch (typical in SDR receivers) in order to significantlyimprove the acquisition sensitivity, meanwhile keep thecomputational complexity still comparable with that of theFFT-based parallel method.
doi:10.32913/mic-ict-research.v3.n11.311 fatcat:ilv76ixrnza3ldj56y7ro53ynu