Research on PN Code Acquisition Based on Automatic Censoring Algorithm
Yu Zhao · Video Engineering · 2012
An adaptive pseudo-noise code acquisition scheme based on automatic multipath signal cancellation is proposed due to the multipath interfere in frequency-selective Rayleigh fading channel.The proposed system combines a serial strategy and an automatic censored cell-averaging constant false alarm rate(CFAR) detector based on ordered data variability,and does not require any a priori information about the number of interferences.The mean acquisition time and the detection performances of the proposed processor are evaluated and compared with those of the conventional adaptive acquisition scheme based on fixed-censoring point detector.It is shown that the considered scheme outperforms significantly the conventional one.