Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-05-08
2007-05-08
Gesesse, Tilahun (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S069000, C455S127100, C370S310000, C370S311000
Reexamination Certificate
active
10731069
ABSTRACT:
An adaptive closed loop transmit power control system which does not require extensive factory calibration of power control loop bandwidths and feedback detect path gain settings over the power transition ranges, frequency bands of operation, temperature, and supply voltage is disclosed. The system automatically compensates for any gain or slope variations in the analog feedforward and feedback paths to maintain system stability and meet performance specifications. The system achieves this by using an adaptive digital signal processing (DSP) system architecture within the feedback path of this closed loop power control system. The system eliminates the need for extensive factory calibration of such parameters as loop bandwidths and feedback detect path gain settings over power transition ranges, frequency bands of operation, temperature, and supply voltage.
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patent: 6166598 (2000-12-01), Schlueter
patent: 2003/0040343 (2003-02-01), Epperson et al.
patent: 2004/0102207 (2004-05-01), Wenzel et al.
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Premakanthan Pravinkumar
Rahman Mahibur
Freescale Semiconductor Inc.
Gesesse Tilahun
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