Patent ID: 7248656

Claim:
A method in a digitally convertible radio (DCR) for optimizing a signal-to-noise ratio (SNR) in a multi-port system, the method comprising: receiving a plurality of input digital data streams, the digital data of the input data streams further having magnitude and phase components wherein the plurality is equal to “N” input digital data streams; creating a corresponding plurality of mixed input data streams from the plurality of input data streams and a plurality of weighted vector values, each of the plurality of mixed input data streams including magnitude and phase components of all the plurality of input data streams wherein the corresponding plurality is equal to “N”; converting the plurality of mixed input data streams to a plurality of analog mixed signals; amplifying the plurality of analog mixed signals; producing, in an analog hybrid matrix, a plurality of sector signals from the plurality of amplified analog mixed signals, respectively, wherein: the first sector signal comprising a maximum first sector signal, a minimal second sector signal component, and a minimal third sector signal component; the second sector signal comprising a maximum second sector signal, a minimal first sector signal component, and a minimal third sector signal component; and the third sector signal comprising a maximum third sector signal, a minimal first sector signal component, a minimal second sector signal component; transmitting the first, second, and third sector signals from antennas coupled to a first output port, a second output port, and a third output port, respectively; correlating digital domain representations of the first, second, and third sector signals with the plurality of input data streams to produce a plurality of sector cross-correlated signals; correlating the plurality of input data streams with each other to produce a plurality of input cross-correlated signals; substantially canceling the cross-correlation between input data streams present in the plurality of sector cross-correlated signals to produce a plurality of corrected sector cross-correlated signals, wherein: the step of substantially canceling the cross-correlation substantially removes, from a single sector cross-correlated signal, the correlated components of all other sector cross-correlated signals; producing normalized power feedback signals from the plurality of corrected sector cross-correlated signals; and determining, from the normalized power feedback signals, a plurality of weighted vector values.