AFC control apparatus and method in mobile communication system and mobile communication equipment using the apparatus and method
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United States of America Patent
Stats
-
Nov 9, 2004
Grant Date -
Jun 21, 2001
app pub date -
Dec 13, 2000
filing date -
Dec 15, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An AFC control apparatus in mobile communication equipment includes a depreading unit, first integrator, and control section. A despreading section despreads the reception signal. The first integrator integrates despread outputs obtained by despreading, of pilot symbols contained in a pilot channel of the reception signal, N (N is a number of 2 or more) consecutive first symbols and N second symbols succeeding the N first symbols, and generates first and second integral outputs. The control section detects any phase shift amount between the first and second integral outputs and controls the frequency of the local signal in accordance with the detected phase shift amount. An AFC control method and mobile communication equipment having the above apparatus and method are also disclosed.
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