Absolute timing and Tx power calibration of the Tx path in a distributed system
First Claim
1. A radio system for relaying packetized radio signals, the radio system comprising:
- a base band calibration signal generator configured to insert a base band calibration signal into a packetized payload signal, the base band calibration signal being synchronized to a synchronization unit;
a calibration unit configured to split the packetized payload signal, thus producing at least one calibrated payload signal, the calibration unit further configured to apply at least one of phase, amplitude and delay changes to the at least one calibrated payload signal;
at least one link configured to forward the at least one calibrated payload signal to at least one transmit path;
at least one transmit path configured to forward the calibrated payload signal asa transmit signal;
a feedback path for feeding back a feedback signal;
a calibration signal modulator configured to receive the said base band calibration signal from the said base band calibration signal generator and to provide a calibration signal to the feedback path;
a feedback signal demodulator for receiving the feedback signal and for generating a demodulated base band feedback signal;
wherein the at least one of phase, amplitude and delay changes are configurable using said base band feedback signal.
7 Assignments
0 Petitions
Accused Products
Abstract
A radio system and a method for relaying packetized radio signals is disclosed. The radio system and the method provide a calibration of transmit signals. Furthermore the radio system and the method provide a measurement of a transmit power level. The radio system comprises at least one transmit path, a calibration unit, a base band calibration signal generator synchronized to a synchronization unit, at the least one link and a power sensor. A portion of a selected one of coupled transmit signals is forwarded to a power sensor for measuring a power level, wherein the calibration unit is adapted to update a transmit power level of the at least one transmit path in response to the transmit power level of the selected one of the coupled transmit signals.
-
Citations
25 Claims
-
1. A radio system for relaying packetized radio signals, the radio system comprising:
-
a base band calibration signal generator configured to insert a base band calibration signal into a packetized payload signal, the base band calibration signal being synchronized to a synchronization unit; a calibration unit configured to split the packetized payload signal, thus producing at least one calibrated payload signal, the calibration unit further configured to apply at least one of phase, amplitude and delay changes to the at least one calibrated payload signal; at least one link configured to forward the at least one calibrated payload signal to at least one transmit path;
at least one transmit path configured to forward the calibrated payload signal asa transmit signal;
a feedback path for feeding back a feedback signal;a calibration signal modulator configured to receive the said base band calibration signal from the said base band calibration signal generator and to provide a calibration signal to the feedback path; a feedback signal demodulator for receiving the feedback signal and for generating a demodulated base band feedback signal; wherein the at least one of phase, amplitude and delay changes are configurable using said base band feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for relaying packetized radio signals, the method comprising:
-
providing a packetized payload signal; generating a base band calibration signal configured to be inserted into the packetized payload signal, wherein the base band calibration signal is in synchronization with a synchronization unit; generating a calibrated payload signal, forwarding the calibrated payload signal as a transmit signal; feeding back a portion of the transmit signal via a feedback path; transforming the said base band calibration signal into a calibration signal;
feeding back said calibration signal via said feedback path;
demodulating the calibration signal received over the feedback path for generating a demodulated base band feedback signal;calibrating the feedback path by using the calibration signal; and
updating at least one of phase, amplitude and delay changes in response to the feedback signal. - View Dependent Claims (20, 21, 22, 23)
-
-
24. Computer program product embodied on a non-transitory computer-readable medium and the computer-readable medium comprising executable instructions for the manufacture of the radio system for relaying packetized radio signals, the radio system comprising:
-
a base band calibration signal generator configured to insert a base band calibration signal into a packetized payload signal, the base band calibration signal being synchronized to a synchronization unit; a calibration unit configured to split the packetized payload signal, thus producing at least one calibrated payload signal, the calibration unit further configured to apply at least one of phase, amplitude and delay changes to the at least one calibrated payload signal; at least one link configured to forward the at least one calibrated payload signal to at least one transmit path; at least one transmit path configured to forward the calibrated payload signal as a transmit signal; a feedback path for feeding back a feedback signal; a calibration signal modulator configured to receive the said base band calibration signal from the said base band calibration signal generator and to provide a calibration signal to the feedback path;
a feedback signal demodulator for receiving the feedback signal and for generating a demodulated base band feedback signal;calibrating the feedback path by using the demodulated base band feedback signal, and wherein the at least one of phase, amplitude and delay changes are configurable using said base band feedback signal.
-
-
25. Computer program product embodied on a non-transitory computer-readable medium and the computer-readable medium comprising executable instructions for the execution of a method for relaying packetized radio signals, the method comprising:
-
providing a packetized payload signal;
generating a base band calibration signal configured to be inserted into the packetized payload signal, wherein the base band calibration signal is in synchronization with a synchronization unit;generating a calibrated payload signal;
forwarding the calibrated payload signal as a transmit signal;feeding back a portion of the transmit signal via a feedback path;
transforming the said base band calibration signal into a calibration signal;
feeding back said calibration signal via said feedback path;
demodulating the calibration signal received over the feedback path for generating a demodulated base band feedback signal;calibrating the feedback path by using the demodulated base band feedback signal; and
updating at least one of phase, amplitude and delay changes in response to the feedback signal.
-
Specification