Systems for integrated self-interference cancellation
First Claim
1. A system for integrated self-interference cancellation, comprising:
- a transmit coupler, communicatively coupled to a transmit signal of a full-duplex wireless transceiver, that samples the transmit signal to create a sampled transmit signal;
an analog self-interference canceller, coupled to the transmit coupler, the analog self-interference canceller comprising;
a controller;
a signal divider, that splits the sampled transmit signal into a set of signal components, the set of signal components transmitted by way of a set of transmit paths;
a set of phase shifters, coupled to the set of transmit paths, wherein a phase shifter of the set of phase shifters shifts a signal component of the set of signal components by a total phase shift value;
wherein the phase shifter comprises a set of phase shift stages, each stage having a stage phase shift value, the set connected to the phase shifter by a set of switches;
wherein the total phase shift value is set by a state configuration of the set of switches and the stage phase shift values of the set of phase shift stages;
a set of scalers, coupled to the set of transmit paths, wherein a scaler of the set of scalers scales the signal component by a total scale factor;
a signal combiner, coupled to the set of transmit paths, that combines the set of signal components into a self-interference cancellation signal; and
a receive coupler, communicatively coupled to a receive signal of the full duplex wireless transceiver, that combines the self-interference cancellation signal with the receive signal to remove at least a first portion of self-interference present in the receive signal.
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Accused Products
Abstract
A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.
202 Citations
18 Claims
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1. A system for integrated self-interference cancellation, comprising:
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a transmit coupler, communicatively coupled to a transmit signal of a full-duplex wireless transceiver, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, the analog self-interference canceller comprising; a controller; a signal divider, that splits the sampled transmit signal into a set of signal components, the set of signal components transmitted by way of a set of transmit paths; a set of phase shifters, coupled to the set of transmit paths, wherein a phase shifter of the set of phase shifters shifts a signal component of the set of signal components by a total phase shift value;
wherein the phase shifter comprises a set of phase shift stages, each stage having a stage phase shift value, the set connected to the phase shifter by a set of switches;
wherein the total phase shift value is set by a state configuration of the set of switches and the stage phase shift values of the set of phase shift stages;a set of scalers, coupled to the set of transmit paths, wherein a scaler of the set of scalers scales the signal component by a total scale factor; a signal combiner, coupled to the set of transmit paths, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, communicatively coupled to a receive signal of the full duplex wireless transceiver, that combines the self-interference cancellation signal with the receive signal to remove at least a first portion of self-interference present in the receive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for integrated self-interference cancellation, comprising:
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a transmit coupler, communicatively coupled to a transmit signal of a full-duplex wireless transceiver, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, the analog self-interference canceller comprising; a controller; a signal divider, that splits the sampled transmit signal into a set of signal components, the set of signal components transmitted by way of a set of transmit paths; a set of phase shifters, coupled to the set of transmit paths, wherein a phase shifter of the set of phase shifters shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, coupled to the set of transmit paths, wherein a scaler of the set of scalers scales the signal component by a total scale factor;
wherein the scaler comprises a set of scaler stages, each stage having a stage scale factor, the set connected to the scaler by a set of switches;
wherein the total scale factor is set by a state configuration of the set of switches and the stage scale factors of the set of scaler stages;a signal combiner, coupled to the set of transmit paths, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, communicatively coupled to a receive signal of the full duplex wireless transceiver, that combines the self-interference cancellation signal with the receive signal to remove at least a first portion of self-interference present in the receive signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification