An Adaptive Threshold Estimation Method for PN Code Acquisition
Xue Wei · Dianzi xuebao · 2003
This paper proposes a simple and practical threshold adaptive estimating method for PN code acquisition.After analyzing the statistical property of the decision variable,we use the Maximum Likelihood (ML) criterion to adaptively estimate the variance of the Gaussian noise.Thus,we get the decision threshold.The performance of the acquisition method using estimated threshold got by computer simulation is very close to the theoretical one's,which shows that the proposed method is useful.Furthermore,for the threshold's estimation method is very simple and fast,it is very fit for practical application.