Title :
Robust method for threshold setting in a DS/DS-CDMA code acquisition
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
fDate :
29 Sep-2 Oct 1996
Abstract :
This paper describes a robust method based on using a rank filter for constant false alarm rate (CFAR) threshold setting during the code acquisition process in a DS and DS-CDMA spread spectrum receiver. The method is robust because the probability of false alarms (Pfa) can be fixed independent of the input signal distribution, i.e., interference conditions. The results are presented for three example Pfa values
Keywords :
Gaussian channels; code division multiple access; filtering theory; probability; pseudonoise codes; radio receivers; radiofrequency interference; spread spectrum communication; AWGN channel; CFAR threshold setting; DS spread spectrum receiver; DS-CDMA spread spectrum receiver; DS/DS-CDMA code acquisition; code acquisition process; constant false alarm rate; false alarm probability; input signal distribution; interference conditions; rank filter; robust method; threshold setting; Additive white noise; Autocorrelation; Delay; Filters; Finite impulse response filter; Gaussian noise; Interference; Jamming; Matched filters; Multiaccess communication; Robustness; Spread spectrum communication;
Conference_Titel :
Universal Personal Communications, 1996. Record., 1996 5th IEEE International Conference on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-3300-4
DOI :
10.1109/ICUPC.1996.557796
