Mobile telecommunication repeater for canceling feedback signals
AssigneeAdvanced Rf Technologies, Inc.
InventorJong-Min Kim
Life of this patent
Estimating the term…
Abstract
A mobile telecommunication wireless repeater includes: a combination stage for combining a received signal with a feedback cancellation signal; a comparison stage for comparing an input signal of the combination stage with an output signal of the combination stage and determining a weighted value and a time offset value for a feedback signal to be cancelled, based on the comparison; and a recombination stage comprising one or more adaptive filters and configured to receive the weighted value and the time offset value and generate the feedback cancellation signal according to the weighted value and the time offset value.
Claims17
A mobile telecommunication wireless repeater, comprising:
- a combination stage for combining a received signal with a feedback cancellation signal;
- a comparison stage for comparing an input signal of the combination stage with an output signal of the combination stage and determining a weighted value and a time offset value for a feedback signal to be cancelled, based on the comparison;
- and
- a recombination stage comprising one or more adaptive filters and configured to receive the weighted value and the time offset value and generate the feedback cancellation signal according to the weighted value and the time offset value.
A method of cancelling feedback from a received signal, the method comprising:
- combining the received signal with a current feedback cancellation signal;
- comparing the received signal before the combination with an output signal after the combination;
- determining a weighted value and a time offset value of a feedback signal to be cancelled, based on the comparison;
- generating, by one or more adaptive filters, a further feedback cancellation signal based on the weighted value and the time offset value;
- and
- applying the further feedback cancellation signal in place of the current feedback cancellation signal.
A method of cancelling feedback from a received signal, the method comprising:
- combining the received signal with a feedback cancellation signal;
- comparing the received signal before the combination with an output signal after the combination;
- determining a weighted value and a time offset value for each feedback signal of a plurality of feedback signals to be cancelled, based on the comparison;
- and
- adjusting, by one or more adaptive filters, the feedback cancellation signal based on the weighted value and the time offset value for each of the feedback signals.
Dependencies are inferred from the claim text.