1. A communication method of a base station in a multiple input multiple output (MIMO) communication system, comprising: generating a precoding vector indicator indicating a target precoding vector for a target user among precoding vectors comprised in a precoding matrix; configuring a mapping table between at least one bit for an interference vector indicator indicating at least one remaining precoding vector and a plurality of vectors comprised in a codebook, based on a probability that the plurality of vectors is comprised in the precoding matrix; and generating the interference vector indicator using the mapping table.