DocumentCode :
885157
Title :
Real-time generation of bit-wise parallel representations of over-sampled PRN codes
Author :
Psiaki, Mark L.
Author_Institution :
Sibley Sch. of Mech. & Aerosp. Eng., Cornell Univ., Ithaca, NY, USA
Volume :
5
Issue :
3
fYear :
2006
fDate :
3/1/2006 12:00:00 AM
Firstpage :
487
Lastpage :
491
Abstract :
An algorithm has been developed that maps pseudo-random number codes onto a set of sample times and stores the results in a bit-wise parallel format. It allows bit-wise parallel software correlation of code-division multiple-access signals to be carried out using long pseudo-random number codes. Bit-wise parallel algorithms speed up software correlation by operating in parallel on multiple samples. The new algorithm uses table look-ups to over-sample a pseudo-random number code. It reduces the PRN code memory requirements of a GPS software receiver by a factor of 3.8 or more, maintains operational efficiency, and keeps code distortion low.
Keywords :
Global Positioning System; code division multiple access; parallel programming; random codes; software radio; table lookup; GPS software receiver; bit-wise parallel software correlation; code distortion; code-division multiple-access signals; operational efficiency; pseudorandom number codes; real-time generation; table look-ups; Global Positioning System; Multiaccess communication; Parallel algorithms; RF signals; Radio frequency; Receivers; Signal processing; Software maintenance; Software radio; Table lookup;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
1536-1276
Type :
jour
DOI :
10.1109/TWC.2006.1611075
Filename :
1611075
Link To Document :
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