1. A communication method of a base station in a multiple input multiple output (MIMO) communication system which uses a precoding matrix generated from vectors included in a codebook, the communication method comprising: generating a precoding vector indicator that indicates a target precoding vector for a target user from among precoding vectors included in the precoding matrix; configuring a mapping table based on the target precoding vector, the mapping table comprising a mapping between interference vector indicators and a plurality of vectors that are included in the codebook, wherein the plurality of vectors are mapped to the interference vector indicators based on a probability that the plurality of vectors are included in the precoding matrix; and transmitting the coding vector indicator and an interference vector indicator to the target user.