Patent ID: 11936343
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The MIMO transmitter of claim 1 wherein, in order to determine the desired combined input signal, Us, for the respective one of the two or more groups of antenna branches, each DPD system of the two or more DPD systems is further operable to:
initialize the desired combined input signal, Us, for the respective one of the two or more groups of antenna branches;
iteratively perform the following until at least one predefined criterion is satisfied:
determine an error, Es, based on a difference between: (a) a desired combined output signal of the respective one of the two or more groups of antenna branches and (b) an actual combined output signal of the respective one of the two or more groups of antenna branches when the desired combined input signal, Us, is applied to the respective one of the two or more respective groups of antenna branches; and
update the desired combined input signal, Us, for the respective one of the two or more groups of antenna branches based on the error, Es.