Title :
An offset Z search strategy for spread spectrum systems
Author :
Pan, S.M. ; Grant, H. ; Dodds, D.E. ; Kumar, S.
Author_Institution :
SED Syst. Inc., Saskatoon, Sask., Canada
Abstract :
A novel Z search method is proposed in which the search is started at a position in the code phase uncertainty region which is offset from center. Using the unified time-domain approach developed by A. Polydoros and C. L. Weber (1984) the distribution and mean of the acquisition time have been obtained for the offset Z search strategy. Based on the mean acquisition time, the optimum offset of the Z search has been studied. The proposed method can improve mean acquisition by as much as 30% when compared with the best previous Z search strategy. The search pattern is optimized by a simple adjustment of the offset parameter
Keywords :
codes; spread spectrum communication; acquisition time distribution; code phase uncertainty region; mean acquisition time; offset Z search; offset parameter; spread spectrum systems; time domain method; Density functional theory; Search methods; Spread spectrum communication; Testing; Time domain analysis; Uncertainty;
Conference_Titel :
Military Communications Conference, 1991. MILCOM '91, Conference Record, Military Communications in a Changing World., IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-87942-691-8
DOI :
10.1109/MILCOM.1991.258434
