Fast acquisition of GMSK-modulated signal for CDPD applications

Details Fast acquisition of GMSK-modulated signal for CDPD applications Fast acquisition of GMSK-modulated signal for CDPD applications

1995-03-01

1997-04-29

Trammell, James F.

Boots, shoes, and leggings

375344, H04L 2706

Patent

active

056255730

ABSTRACT:
A method and apparatus for the fast acquisition of GMSK-modulated signal for CDPD (Cellular Digital Packet Data) applications wherein the frequency offset and time of arrival of the data sequence are quickly determined. The computational burden is reduced by roughly estimating the frequency offset using an operation insensitive to timing uncertainty and roughly estimating the time of arrival using an operation insensitive to frequency offset using the roughly estimated frequency offset and time of arrival to construct a small two dimensional array to determine the final frequency offset and time of arrival.

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