Patent ID: 6717977
Filing Date: 2004-04-06
Classification: H04B

Abstract:
An apparatus for acquiring a pseudo noise (PN) code, comprising:a PN code generator for generating K PN codes; a multiplexer for multiplying a received signal by +1 or âˆ’1 according to the value of a PN code selected to be a reference code among K PN codes and outputting the multiplication result; 2Kâˆ’1 accumulators for accumulating the outputs of the multiplexer according to a predetermined control signal; a selector for outputting the control signal so that the output of the multiplexer can input to one of the accumulators according to (Kâˆ’1) code values excluding the reference code; a programmable adder for adding the outputs of the accumulators to each other according to a predetermined regulation and outputting K correlation values; and a discriminator for outputting the PN code having a correlation value larger than a predetermined value among the K correlation values.