Automatic transmit power control loop with modulation averaging

Details Automatic transmit power control loop with modulation averaging Automatic transmit power control loop with modulation averaging

2001-09-14

2009-08-04

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

07570709

ABSTRACT:
A telecommunications device includes an improved transmit power control loop. The transmit power control loop receives an output power measurement from a power amplifier at a transmitter output. The transmit power control loop also averages and samples an input power. The sampled power is provided to a calibration table, which produces a corresponding corrected Instantaneous output power. The instantaneous output power is then compared with the sampled output power. A difference between the instantaneous output power and the measured output power is then summed with the averaged power to provide a correction figure, used to adjust the set power. A running sum filter may be used to filter the resulting corrected power signal. The resulting average power adjustment is then used to adjust the gain of various power amplifiers in the transmit path.

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