Method and apparatus for compensation of Doppler induced...

Details Method and apparatus for compensation of Doppler induced... Method and apparatus for compensation of Doppler induced...

2007-05-08

2007-05-08

Gelin, Jean (Department: 2617)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S067110, C455S067160, C455S552100, C455S553100

Reexamination Certificate

active

10122204

ABSTRACT:
A method and apparatus for correcting for Doppler shift in GSM signals at a mobile handset in communication with a base station is provided. The rate of change of position of the mobile unit is detected in relation to the base station and a Doppler correction is derived from the rate of change. This can be used when calculating the synchronization of the UMTS timebase from the GSM network information.

REFERENCES:
patent: 5539730 (1996-07-01), Dent
patent: 6128327 (2000-10-01), Bird et al.
patent: 6167268 (2000-12-01), Souissi et al.
patent: 6201973 (2001-03-01), Kowaguchi
patent: 6330446 (2001-12-01), Mori
patent: 6424637 (2002-07-01), Pecen et al.
patent: 6665540 (2003-12-01), Rantalainen et al.

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