Apparatus and method for pre-processing for filter bank multi carrier scheme in wireless communication system

An apparatus of a communication node, the apparatus comprising:

• at least one processor configured to:
• determine an inter-carrier interference (ICI) on a subcarrier set based on a frequency confinement characteristic of at least one filter corresponding to the subcarrier set and a channel for the subcarrier set, and
• determine a precoding scheme based on the ICI on the subcarrier set;
• and
• at least one transceiver configured to transmit, to a counterpart node, a feedback signal comprising information indicating the precoding scheme,
• wherein the precoding scheme is determined to be a first scheme for using each subcarrier symbol in the subcarrier set to obtain a precoding result for the each subcarrier symbol in response to the ICI being less than a threshold value, and
• wherein the precoding scheme is determined to be a second scheme for using each subcarrier symbol in the subcarrier set and at least one additional subcarrier symbol to obtain a precoding result for the each subcarrier symbol in response to the ICI being greater than the threshold value.