An apparatus and method for detecting a synchronous initial synchronous type of a pseudo noise code using an adaptive threshold value

摘要

1. The technical field to which the invention described in the claims belongs;The present invention relates to an apparatus and method for detecting a synchronous initial synchronous type of a pseudo noise code using an adaptive threshold value.;2. Technical challenges to be solved by the invention;The present invention provides an initial coincidence detection apparatus and method using an optimal adaptive threshold value so as to increase the performance of initial synchronous detection of a pseudo noise code.;3. The point of the solution of the invention;In the present invention, at least one correlation value correlated with a pseudo noise code is stored in a received signal, and the correlation value is classified into a magnitude order, and a maximum value is stored among the at least one correlation values, Values are stored in different positions, a background power level is estimated with the remaining correlation values, an estimated value is obtained, and an adaptive threshold value is obtained by multiplying the estimated value by a false alarm control constant. The maximum value and the adaptive threshold value are compared with each other, Terminates or shifts the phase to delay the predetermined time and continue testing the initial synchronization of the pseudo noise sequence.;4. Important Uses of the Invention;The present invention is applied to a code division multiple access mobile communication system.