Average power control of wireless transmission having a variable duty cycle
AssigneeNDSSI Holdings, LLC
InventorsAdam L. Schwartz, James Christopher Arnott
Life of this patent
Estimating the term…
Abstract
A method an apparatus for controlling a transmission signal power level of a transmitter is disclosed. The method includes receiving a root-mean-squared target power level. A duty cycle of a transmission signal is determined that indicates power on and power off periods over a predetermined sensing interval. A transmission signal power level is sensed. The transmission signal power level is adjusted to be approximately equal to the target power level divided by the duty cycle.
Claims18
A method of controlling a transmission signal power level of a transmitter, comprising:
- receiving a target power level;
- determining duty cycle of a transmission signal that indicates power on and power off periods over a predetermined sensing interval;
- sensing a transmission signal power level;
- adjusting the transmission signal power level to be approximately equal to the target power level divided by the duty cycle:
- receiving a transmission indicator that is active during transmission of signals;
- at least sensing the transmission signal power level while the transmission indicator is active.
A UWB transmitter comprising:
- a power detector for detecting an instantaneous power level of a transmission signal of the transmitter;
- an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal;
- a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal;
- taking M measurements of a power level of a transmission packet;
- computing a first instantaneous power level by averaging the M measurements;
- sensing the first instantaneous power level of N transmission packets;
- and
- computing the instantaneous power level by detecting the maximum first instantaneous power level of the N transmission packets.
A UWB transmitter comprising:
- a power detector for detecting an instantaneous power level of a transmission signal of the transmitter;
- an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal;
- a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal;
- taking M measurements of a power level of a transmission packet;
- computing a first instantaneous power level by averaging the M measurements;
- wherein sensing the instantaneous power level of the transmission signal, comprises:
- sensing the first instantaneous power level of N transmission packets;
- and
- computing the instantaneous power level averaging the first instantaneous power level of the N transmission packets.
Dependencies are inferred from the claim text.