Patent ID: 9374115
Filing Date: 2016-06-21
CPC Classification: H04B

Claim Text:
1. A method performed by a base station for reducing distortion of an uplink signal received in a receiver part of the base station, said distortion being caused by intermodulation (IM) products, the method comprising: generating, from a transmitter source signal, a modeled signal of IM components, as nth order IM components of the transmitter source signal, n being an integer value of 2, 3, 4 and/or 5 etc.; detecting IM products of the received uplink signal, the received uplink signal comprising uplink (UL) traffic components and the IM products, by correlating the received uplink signal with the IM components of the modeled signal; producing a cancellation signal based on the detected IM products of the received uplink signal, and subtracting the cancellation signal from the received uplink signal.