Patent ID: 8165637

Claim:
A Multiple Input Multiple Output (MIMO) antenna system, comprising: a first antenna element; a second antenna element; a receiver for receiving at least one of different polarized signals through the first antenna element; a channel estimator for estimating a channel using a polarized signal received via the receiver and a polarized signal received via the second antenna element; and a correlation comparator for controlling the receiver to receive a specific polarized signal of the different polarized signals according to a correlation calculated from the estimated channel, wherein the receiver comprises a power comparator for controlling to receive a specific polarized signal of the different polarized signals according to a Received Signal Strength Indication (RSSI) of the received polarized signal from the first antenna element, and wherein the power comparator controls the receiver to receive a polarized signal different from the pre-received polarized signal temporally when the RSSI of the received polarized signal is less than a threshold RSSI.