Patent ID: 8634481

Claim:
A transmitter of a multiple-input multiple-output (MIMO) system comprising: means for developing a rate and a power for each data substream, said means for developing being adapted to develop each said rate and each said power based on feedback of an indicator of each said rate and each said power received from a receiver of said MIMO system; and means for applying to each respective data substream a rate control and a power control corresponding to said rate and power that was developed for said data substream, wherein, from time to time, said rate developed for and applied to one of said data substreams is different from said rate developed for and contemporaneously applied to at least one other of said data substreams; wherein said indicator of each said rate and of each said power for each data substream was derived based on received versions of signals previously transmitted from said transmitter, said received versions having been received at said receiver and being such that each said output received a signal from each said input.