Patent ID: 8989296
Filing Date: 2015-03-24
Classification: H04B

Abstract:
1. An operating method of a wireless local area network (WLAN) station configured to receive a desired signal and at least one interference signal through each of at least two station antennas from an access point (AP) including at least two AP antennas and supporting down-link (DL) multiple user multiple input multiple output (MU-MIMO), the method comprising: estimating a channel and generating an estimated channel matrix based on the estimated channel; separating a channel matrix of the desired signal and a channel matrix of the interference signal from the estimated channel matrix; detecting the desired signal using the separated channel matrix of the desired signal; detecting the interference signal using the separated channel matrix of the interference signal; creating a precoding matrix using channel state information (CSI); multiplying, wherein the multiplying is performed by the AP, the precoding matrix by a stream signal; and transmitting, wherein the AP performs the transmitting, the multiplication result to the WLAN station through at least one of the AP antennas.