Systems and methods for tunable out-of-band interference mitigation
First Claim
Patent Images
1. A system for interference mitigation comprising:
- a first transmit coupler, communicatively coupled to an analog transmit signal of a communication system, that splits the analog transmit signal into a first-path analog transmit signal and a second-path analog transmit signal;
a receive-band noise cancellation system that samples the first-path analog transmit signal and generates a receive-band noise cancellation signal from the first-path analog transmit signal;
a first transmit-band filter that filters the second-path analog transmit signal in a transmit band, resulting in reduced signal power outside of the transmit band;
a second transmit coupler that combines the receive-band noise cancellation signal and the second-path analog transmit signal, resulting in generation of a reduced-noise analog transmit signal;
wherein the reduced-noise analog transmit signal has further reduced signal power in a receive band relative to the second-path analog transmit signal;
a first receive coupler, communicatively coupled to an analog receive signal of the communication system, that splits the analog receive signal into a first-path analog receive signal and a second-path analog receive signal;
a transmit-band noise cancellation system that samples the first-path analog receive signal and generates a transmit-band noise cancellation signal from the first-path analog receive signal;
a first receive-band filter that filters the second-path analog receive signal in the receive band, resulting in reduced signal power outside of the receive band; and
a second receive coupler that combines the transmit-band noise cancellation signal and the second-path analog receive signal, resulting in generation of a reduced-noise analog receive signal;
wherein the reduced-noise analog receive signal has further reduced signal power in a transmit band relative to the second-path analog receive signal;
wherein the receive-band noise cancellation system delays the receive-band noise cancellation signal by a first amount;
wherein the first transmit-band filter delays the second-path analog transmit signal by a second amount;
wherein the first amount is within ten percent of the second amount.
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Abstract
A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.
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Citations
10 Claims
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1. A system for interference mitigation comprising:
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a first transmit coupler, communicatively coupled to an analog transmit signal of a communication system, that splits the analog transmit signal into a first-path analog transmit signal and a second-path analog transmit signal; a receive-band noise cancellation system that samples the first-path analog transmit signal and generates a receive-band noise cancellation signal from the first-path analog transmit signal; a first transmit-band filter that filters the second-path analog transmit signal in a transmit band, resulting in reduced signal power outside of the transmit band; a second transmit coupler that combines the receive-band noise cancellation signal and the second-path analog transmit signal, resulting in generation of a reduced-noise analog transmit signal;
wherein the reduced-noise analog transmit signal has further reduced signal power in a receive band relative to the second-path analog transmit signal;a first receive coupler, communicatively coupled to an analog receive signal of the communication system, that splits the analog receive signal into a first-path analog receive signal and a second-path analog receive signal; a transmit-band noise cancellation system that samples the first-path analog receive signal and generates a transmit-band noise cancellation signal from the first-path analog receive signal; a first receive-band filter that filters the second-path analog receive signal in the receive band, resulting in reduced signal power outside of the receive band; and a second receive coupler that combines the transmit-band noise cancellation signal and the second-path analog receive signal, resulting in generation of a reduced-noise analog receive signal;
wherein the reduced-noise analog receive signal has further reduced signal power in a transmit band relative to the second-path analog receive signal;
wherein the receive-band noise cancellation system delays the receive-band noise cancellation signal by a first amount;
wherein the first transmit-band filter delays the second-path analog transmit signal by a second amount;
wherein the first amount is within ten percent of the second amount.
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2. A system for interference mitigation comprising:
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a first transmit coupler, communicatively coupled to an analog transmit signal of a communication system, that splits the analog transmit signal into a first-path analog transmit signal and a second-path analog transmit signal; a receive-band noise cancellation system that samples the first-path analog transmit signal and generates a receive-band noise cancellation signal from the first-path analog transmit signal; a first transmit-band filter that filters the second-path analog transmit signal in a transmit band, resulting in reduced signal power outside of the transmit band; a second transmit coupler that combines the receive-band noise cancellation signal and the second-path analog transmit signal, resulting in generation of a reduced-noise analog transmit signal;
wherein the reduced-noise analog transmit signal has further reduced signal power in a receive band relative to the second-path analog transmit signal;a first receive coupler, communicatively coupled to an analog receive signal of the communication system, that splits the analog receive signal into a first-path analog receive signal and a second-path analog receive signal; a transmit-band noise cancellation system that samples the first-path analog receive signal and generates a transmit-band noise cancellation signal from the first-path analog receive signal; a first receive-band filter that filters the second-path analog receive signal in the receive band, resulting in reduced signal power outside of the receive band; a second receive-band filter that filters the first-path analog transmit signal in the receive band prior to processing by the receive-band noise cancellation system, resulting in further reduced signal power outside of the receive band; and a second receive coupler that combines the transmit-band noise cancellation signal and the second-path analog receive signal, resulting in generation of a reduced-noise analog receive signal;
wherein the reduced-noise analog receive signal has further reduced signal power in a transmit band relative to the second-path analog receive signal;
wherein the second receive-band filter delays the first-path analog transmit signal by a first amount;
wherein the receive-band noise cancellation system delays the receive-band noise cancellation signal by a second amount;
wherein the first transmit-band filter delays the second-path analog transmit signal by a third amount;
wherein a sum of the first and second amounts is within ten percent of the third amount.- View Dependent Claims (3, 4, 5, 6, 7)
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8. A system for interference mitigation comprising:
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a first transmit coupler, communicatively coupled to an analog transmit signal of a communication system, that splits the analog transmit signal into a first-path analog transmit signal and a second-path analog transmit signal; a receive-band noise cancellation system that samples the first-path analog transmit signal and generates a receive-band noise cancellation signal from the first-path analog transmit signal; a first transmit-band filter that filters the second-path analog transmit signal in a transmit band, resulting in reduced signal power outside of the transmit band; a second transmit coupler that combines the receive-band noise cancellation signal and the second-path analog transmit signal, resulting in generation of a reduced-noise analog transmit signal;
wherein the reduced-noise analog transmit signal has further reduced signal power in a receive band relative to the second-path analog transmit signal;a first receive coupler, communicatively coupled to an analog receive signal of the communication system, that splits the analog receive signal into a first-path analog receive signal and a second-path analog receive signal; a transmit-band noise cancellation system that samples the first-path analog receive signal and generates a transmit-band noise cancellation signal from the first-path analog receive signal; a first receive-band filter that filters the second-path analog receive signal in the receive band, resulting in reduced signal power outside of the receive band; and a second receive coupler that combines the transmit-band noise cancellation signal and the second-path analog receive signal, resulting in generation of a reduced-noise analog receive signal;
wherein the reduced-noise analog receive signal has further reduced signal power in a transmit band relative to the second-path analog receive signal;
wherein the transmit-band noise cancellation system delays the transmit-band noise cancellation signal by a first amount;
wherein the first receive-band filter delays the second-path analog receive signal by a second amount;
wherein the first amount is within ten percent of the second amount.- View Dependent Claims (9, 10)
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Specification