Patent ID: 8737514

Claim:
An apparatus comprising: a channel estimation and feedback module (CEFM) to: set a first rank for a plurality of nodes in coordinated multipoint (CoMP) measurement set, the plurality of nodes including a serving node to wirelessly communicate with a user equipment and one or more coordinating nodes to coordinate with the serving node to facilitate wireless communication with the user equipment; calculate first-stage channel state information (CSI), including a first subband configuration, for the first rank; calculate second-stage CSI for a second rank based on the first subband configuration, wherein the second rank is less than the first rank; and calculate third-stage CSI for the first subband configuration and the first rank based on the second-stage CSI; and a transmitter module to receive the third-stage CSI from the CEFM and to feed back the third-stage CSI to a selected node of the plurality of nodes.