Wireless full-duplex system and method using sideband test signals
First Claim
1. A full-duplex transceiver comprising:
- a radio-frequency transmit chain operative to generate a combined radio-frequency signal including an outgoing radio-frequency communication signal having a center frequency, and a first radio-frequency test signal having a center frequency different from the center frequency of the outgoing radio-frequency communication signal;
a power amplifier operative to amplify the combined radio-frequency communication signal;
a transmit antenna operative to transmit the combined radio-frequency communication signal;
a receive antenna operative to receive an incoming radio-frequency signal, wherein the incoming radio-frequency signal includes a radio-frequency test component caused by the transmitted first radio-frequency test signal and a self-interference component caused by the transmitted radio-frequency communication signal;
a radio-frequency demodulator operative to demodulate at least the radio-frequency test component to obtain a demodulated test component;
an analog-to-digital converter operative to sample the demodulated test component; and
a digital decoding module operative to determine nonlinear distortion introduced by the power amplifier using the sampled demodulated test component.
0 Assignments
0 Petitions
Accused Products
Abstract
A full-duplex transceiver is provided with componentry and methods for cancellation of nonlinear self-interference signals. The transceiver is capable of receiving an incoming radio-frequency signal that includes both a desired radio-frequency signal component and a self-interference component caused by the transceiver'"'"'s own radio-frequency transmission. The transceiver demodulates the incoming radio-frequency signal to generate a first demodulated signal. The transceiver combines an analog corrective signal with the first demodulated signal to generate a second demodulated signal with reduced self-interference. The transceiver processes the first and second demodulated signals to determine a desired incoming baseband signal and to determine nonlinear components of the self-interference signal, such as nonlinearities introduced by the transceiver'"'"'s power amplifier.
87 Citations
15 Claims
-
1. A full-duplex transceiver comprising:
-
a radio-frequency transmit chain operative to generate a combined radio-frequency signal including an outgoing radio-frequency communication signal having a center frequency, and a first radio-frequency test signal having a center frequency different from the center frequency of the outgoing radio-frequency communication signal; a power amplifier operative to amplify the combined radio-frequency communication signal; a transmit antenna operative to transmit the combined radio-frequency communication signal; a receive antenna operative to receive an incoming radio-frequency signal, wherein the incoming radio-frequency signal includes a radio-frequency test component caused by the transmitted first radio-frequency test signal and a self-interference component caused by the transmitted radio-frequency communication signal; a radio-frequency demodulator operative to demodulate at least the radio-frequency test component to obtain a demodulated test component; an analog-to-digital converter operative to sample the demodulated test component; and a digital decoding module operative to determine nonlinear distortion introduced by the power amplifier using the sampled demodulated test component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification