Patent ID: 8654883

Claim:
A system comprising: a multiple-input-multiple-output (MIMO) receiving system having N branches and configured to operate in accordance with one or more legacy MIMO receiving schemes; a radio distribution network (RDN) connected to the MIMO receiving system, the RDN comprising one or more beamformers, wherein at least one of the beamformers is fed by two or more antennas, so that a total number of antennas in the MIMO receiving system is M, wherein M is greater than N, wherein M and N are integers; and a controller configured to tune the one or more beamformers based on legacy MIMO metrics derived from the MIMO receiving system using a tuning method, wherein the MIMO receiving system comprises two or more Digital Signal Processing (DSP) modems, fed by two or more radio circuitries, each fed by a radio frequency (RF) beamformer, wherein the tuning method is selected based on a type of the legacy MIMO receiving scheme operated by the MIMO receiving system.