Patent ID: 9214995
Filing Date: 2015-12-15
Classification: H04B,H04L,H04W

Abstract:
1. A method of encoding for interference management, where a plurality of receivers each having K antennas are communicably coupled to a first transmitter and a second transmitter each having M antennas, the method comprising: acquiring a channel state information (CSI) matrix for each of a plurality of multiple-input-multiple output (MIMO) channels between a first transmitter and a plurality of receivers; determining transmission ranks for the plurality of receivers, wherein each of the transmission ranks corresponds to a number of one or more data streams to be transmitted from both the first transmitter and a second transmitter to a receiver of the plurality of receivers; identifying a maximum transmission rank from the determined transmission ranks; wherein a sum of the determined transmission ranks and the identified maximum transmission is less than or equal to M; generating transmit data that includes the one or more data streams to be transmitted from both the first transmitter and the second transmitter to each of the corresponding plurality of receivers; generating a precoding matrix for the generated transmit data based, at least in part, on the acquired CSI matrix, wherein the precoding matrix generated to increase a transmission rank of the generated transmit data, and to cancel interference associated with the second transmitter at each of the plurality of receivers; and encoding the transmit data using the corresponding generated precoding matrix.