Wireless Full-Duplex System and Method with Self-Interference Sampling

摘要

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.

主权项

1. A method performed in a full-duplex transceiver, comprising:
generating a first analog corrective signal; receiving an incoming radio-frequency signal, wherein the incoming radio-frequency signal includes a self-interference component and a desired radio-frequency signal component; demodulating the incoming radio-frequency signal to generate a first demodulated signal; combining the first analog corrective signal with the first demodulated signal to generate a second demodulated signal with reduced self-interference; sampling the first demodulated signal to obtain a sampled self-interference component; and processing at least the second demodulated signal and the sampled self-interference component to determine a desired incoming baseband signal.