Patent ID: 7711330

Claim:
A method for transmitting signals by using a beam forming scheme and an space-time block coding (STBC) scheme in a transmitter of an multiple input multiple output/multiple input single output (MIMO/MISO) wireless communication system, the method comprising: performing beam forming of a reference signal by applying a plurality of beams available for the transmitter mapped to orthogonal codes on a one-to-one basis to the reference signal to transmit the beam-formed reference signal to a receiver; receiving information on an optimum beam and a sub-optimum beam, to maximize reception performance, from the receiver; encoding data signals in the STBC scheme to perform beam forming of the encoded data signals by using beams corresponding to the information on the optimum beam and the sub-optimum beam; and transmitting the beam-formed data signals to the receiver, wherein the optimum beam is a beam which is mapped to a first orthogonal code exhibiting a maximum correlation value from among correlation values of orthogonal codes applied to processing of the reference signal received in the receiver and the sub-optimum beam is a beam which is mapped to a second orthogonal code exhibiting a peak correlation value and having a correlation value below the first orthogonal code and a predetermined threshold correlation value from among the correlation values excluding the maximum correlation value.