Patent ID: 9673861
Date: 2017-06-06
CPC Classifications: H04B,H04L

Claim:
1. A method, performed by a wireless communication node, for cancelling crosstalk between at least one transmitter chain and a receiver chain, the method comprising: obtaining a digital observation signal sample in the form of a digital sample of a signal originating from a point in a first transmitter chain that is subsequent to power amplification; obtaining a digital sample of a reception signal from the receiver chain; processing, based on the digital observation signal sample, a digital transmit signal sample originating from digital circuitry in the wireless communication node, for transmission in the first transmitter chain; calculating, based on the digital observation signal sample, a crosstalk model value from a crosstalk model, the crosstalk model value representing an interference signal created as a consequence of crosstalk between the first transmitter chain and the receiver chain; and subtracting the crosstalk model value from the digital sample of the reception signal, thereby obtaining an output digital signal sample from which crosstalk is cancelled.