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Adaptive filtering based DS/SS code acquisition in frequency selective and flat Rayleigh fading channels

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2 Author(s)
El-Tarhuni, M.G. ; Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada ; Sheikh, A.U.

The mean acquisition time performance for a code acquisition scheme utilizing an FIR adaptive filter is investigated. Both frequency selective and frequency nonselective Rayleigh fading channels are considered. It is shown that fading causes a performance degradation of less than 3 dB for both the coherent and noncoherent cases when the carrier phase is varying slowly, and less than 5 dB for the noncoherent case with fast phase variations. This degradation is significantly smaller than that suffered by other systems based on using matched filters (about 10-15 dB degradation)

Published in:

Vehicular Technology Conference, 1997, IEEE 47th  (Volume:3 )

Date of Conference:

4-7 May 1997