Interference cancellation repeater and operating method thereof
AssigneesSOLiD, INC., Foundation of Soongsil University-Industry Cooperation
InventorsNagwon Kwon, Hyunchae Kim, Chonghoon Kim
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Abstract
A method of operating a TDD-based interference cancellation repeater, the method comprises setting a compensation gain of a gain compensator differently in an uplink communication period and a downlink communication period, setting an optimal coefficient of an adaptive filter in the uplink communication period and an optimal coefficient of the adaptive filter in the downlink communication period the same, based on the set compensation gain of the gain compensator and removing an interference signal in the uplink communication period or the downlink communication period according to the set optimal coefficient of the adaptive filter.
Claims15
A method of operating a TDD-based interference cancellation repeater, the method comprising:
- setting a compensation gain of a gain compensator differently in an uplink communication period and a downlink communication period, based on a gain ratio between a first gain corresponding to an overall gain of an uplink communication path and a second gain corresponding to an overall gain of a downlink communication path;
- setting an optimal coefficient of an adaptive filter in the uplink communication period and an optimal coefficient of the adaptive filter in the downlink communication period the same, based on the set compensation gain of the gain compensator;
- and
- removing an interference signal in the uplink communication period or the downlink communication period according to the set optimal coefficient of the adaptive filter.
A TDD-based interference cancellation repeater comprising:
- a controller configured to set a compensation gain of a gain compensator differently in an uplink communication period and a downlink communication period based on a gain ratio between a first gain corresponding to an overall gain of an uplink communication path and a second gain corresponding to an overall gain of a downlink communication path, and to set an optimal coefficient of an adaptive filter in the uplink communication period and an optimal coefficient of the adaptive filter in the downlink communication period the same based on the set compensation gain of the gain compensator;
- and
- a subtractor configured to remove an interference signal in the uplink communication period or the downlink communication period according to the set optimal coefficient of the adaptive filter.
Dependencies are inferred from the claim text.