METHODS AND APPARATUS FOR CHANNEL ESTIMATION AND PRECODING BASED ANALOG CHANNEL STATE INFORMATION FEEDBACK

摘要

Methods and apparatus for channel estimation and precoding based analog channel state information feedback are described. A method, implemented in a network node, includes receiving, from another network node, a sounding frame with a reference sequence that is known to the network node. At least one channel state information (CSI) matrix is estimated using the received sounding frame and the reference sequence to generate at least one estimated CSI matrix, and the at least one generated estimated CSI matrix is applied as at least one precoded estimated CSI matrix to a feedback packet. The feedback packet is sent to the other network node and includes at least one training field carrying the at least one precoded estimated CSI matrix and at least one training field that carries CSI information that is not precoded.