Performance of Acquisition in a Receiver Based on Spatial Processor
Tang Ma-ke · Journal of Chongqing University. English Edition · 2008
A receiver based on a spatial processor and digital matched filter(DMF) is studied extensively in order to evaluate the performance of PN code acquisition.By using a state transition diagram,we derive the analytic expressions of the receiver's mean acquisition time based on a spatial processor and DMF in a AWGN channel.Numerical analysis is also given in this paper.It is shown that the proposed receiver based on a spatial processor and DMF can accelerate the process of PN code acquisition.If the signal-to-noise ratio is low,then a larger number of angular cells m are required to obtain a minimum mean acquisition time.With larger signal-to-noise ratios,only a few regions are required to achieve the same goal.Based on the assumption that the false alarm is constant,there exists an optimum number of angular cells m that minimizes the mean acquisition time.