Method and device for recovering an unknown frequency in digital cellular communications systems
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United States of America Patent
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Issued Date -
Jun 12, 2003
app pub date -
Dec 9, 2002
filing date -
Dec 10, 2001
priority date (Note) -
Abandoned
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Abstract
Method for recovering an unknown frequency and frequency drift by iterative correlation in multicarrier radio communications applications, particularly in third/second generation mobile communication systems co-existence environments. The invention detects a correlation peak between a known sequence (28) of bits sent by the base station to the mobile and the received signal (26) by the mobile. The frequency recovering process comprises the correction in frequency of a local oscillator (28) in the mobile till the best correlation result between the received burst (26) and the known pattern (28) is achieved.
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