US Patent 11101841 Adaptive self-interference cancellation

Systems, circuitries, and methods are disclosed that generate an interference replica signal that estimates interference in a receive signal that is due to a transmit signal. The interference replica signal is combined with the receive signal to generate a corrected receive signal. The method includes quantizing the transmit signal to generate a quantized transmit signal; weighting the quantized transmit signal based on one or more quantization weights; filtering the weighted quantized transmit signal based on two or more filter weights to generate the interference replica signal; and determining the quantization weights and the filter weights based on the corrected receive signal.