Pulse or digital communications – Receivers – Automatic gain control
Reexamination Certificate
2011-08-09
2011-08-09
Puente, Eva Y (Department: 2611)
Pulse or digital communications
Receivers
Automatic gain control
C375S219000, C375S148000, C375S130000, C455S234100, C455S240100, C455S242200
Reexamination Certificate
active
07995684
ABSTRACT:
A receiver operates to AGC a multi-carrier signal through a corresponding number of inner loops and an outer loop AGC processes. A first number of bits for representing the multi-carrier signal with a limited amount of interference is determined through a calibration mode process. The first number of bits provides for quantization of the multi-carrier signal at an outer loop AGC to a maximum quantization level. After the received signal power estimate is reached a predetermined “ON” threshold, the outer loop AGC is operated at a second number of bits higher than the first number of bits to allow a quantization of possible interference in accordance with a difference of the first and second number of bits. The outer loop AGC switches back to use the first number of bits when the received signal power estimate falls below a predetermined “OFF” threshold.
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International Search Report and Written Opinion—PCT/US2004/002927, International Search Authority—European Patent Office—Jul. 22, 2004.
Black Peter J.
Montojo Juan
Salvi Rohan Sudhakar
Beladi Sayed Hossain
Hooks William M.
Puente Eva Y
Qualcomm Incorporated
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