Patent ID: 9231669
Filing Date: 2016-01-05
CPC Classification: H01Q,H04B

Claim Text:
1. A communication system for multiple inputs and multiple outputs (MIMO), comprising: a plurality of antennas, wherein each antenna of the plurality of antennas is configured to produce a radiation pattern associated therewith, and each of said radiation patterns of the plurality of antennas is associated with an antenna mode such that the plurality of antennas yields a plurality of modes; and a processor coupled to the plurality of antennas and configured to select one of the modes among the plurality of modes to optimize signal quality for each time interval based on a channel quality indicator (CQI) by considering envelope correlation effects; said plurality of antennas comprising one or more modal antennas, each of the one or more modal antennas having a plurality of modes corresponding to a plurality of radiation patterns associated therewith; wherein during a time interval, for each of the one or more modal antennas, the processor is configured to measure an instantaneous CQI of the selected mode, obtain a predicted CQI of each of the plurality of modes, and obtain a CQI improvement for each of the plurality of modes, wherein the CQI improvement is defined as the predicted CQI of each of the plurality of modes minus the predicted CQI of the selected mode.