Patent ID: 9590664
Date: 2017-03-07
CPC Classifications: H03F,H04B

Claim:
1. A method in a network node, comprising: receiving a first input signal from a first antenna branch baseband processing unit of a first antenna branch of the network node; receiving a second input signal from a second antenna branch baseband processing unit of a second antenna branch of the network node; determining a first compensation coefficient; determining a second compensation coefficient; applying, using a mutual coupling processor, the first compensation coefficient to the second input signal received from the second antenna branch baseband processing unit to generate a first output signal; applying, using the mutual coupling processor, the second compensation coefficient to the first input signal received from the first antenna branch baseband processing unit to generate a second output signal; outputting the first output signal to a first power amplifier of the first antenna branch, the first output signal compensating for a mutual coupling from the second antenna branch to the first antenna branch, the first power amplifier operating in a non-linear region; and outputting the second output signal to a second power amplifier of the second antenna branch, the second output signal compensating for a mutual coupling from the first antenna branch to the second antenna branch, the second power amplifier operating in the non-linear region.