According to one embodiment, a method of receiving signals from a transmitter having a plurality of antennas includes: receiving the signals from the transmitter; selecting a precoding matrix based on a multiplexing rate (R) by selecting R column vectors from a single matrix corresponding to a maximum multiplexing rate, wherein the maximum multiplexing rate corresponds to a number (Nt) of the plurality of antennas, wherein each column vector of a first precoding matrix corresponding to a first multiplexing rate is included as a part of column vectors of a second precoding matrix corresponding to a second multiplexing rate when the second multiplexing rate is greater than the first multiplexing rate; and processing the received signals using the selected precoding matrix.