Interference Cancellation for Full-Duplex Communications
First Claim
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1. A communications apparatus used in a wireless full duplex system, the communications apparatus comprising:
- a receiver chain connected to a receive antenna, the receiver chain comprising;
a first baseband amplifier to amplify a receive signal in a receive path; and
a first automatic gain controller to control the first baseband amplifier, andan interference cancelling chain,wherein one or more cancellation signals generated by the interference cancelling chain are fed back to the receiver chain prior to the first baseband amplifier which uses the first automatic gain controller.
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Abstract
A communications apparatus used in a wireless full duplex system is disclosed. The communications apparatus includes a receiver chain connected to an antenna and an interference cancelling chain. One or more cancellation signals generated by the interference cancelling chain are fed back to the receiver chain prior to the first baseband amplifier which uses the first automatic gain control and the second automatic gain controller. Other methods and systems also are disclosed.
119 Citations
20 Claims
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1. A communications apparatus used in a wireless full duplex system, the communications apparatus comprising:
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a receiver chain connected to a receive antenna, the receiver chain comprising; a first baseband amplifier to amplify a receive signal in a receive path; and a first automatic gain controller to control the first baseband amplifier, and an interference cancelling chain, wherein one or more cancellation signals generated by the interference cancelling chain are fed back to the receiver chain prior to the first baseband amplifier which uses the first automatic gain controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method implemented in a communications apparatus used in a wireless full duplex system, the method comprising:
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in a receiver chain connected to a receive antenna, amplifying, with a first baseband amplifier, a receive signal in a receive path; and controlling, with a first automatic gain controller, the first baseband amplifier, wherein one or more cancellation signals generated by an interference cancelling chain are fed back to the receiver chain prior to the first baseband amplifier which uses the first automatic gain controller. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification