The present invention discloses an ESPAR antenna transmitter and a method for transmitting multiple OFDM symbols in a beam-space MIMO environment. A method for transmitting independent multiple OFDM symbols through an ESPAR antenna transmitter in a beam-space MIMO system according to an embodiment of the present invention is characterized in that a beam pattern of a beam-space MIMO system is applied to multiple OFDM symbols under a plurality of constraint conditions And a second current value that is implemented through the ESPAR antenna transmitter and is applied to the active antenna and the plurality of parasitic antennas disposed around the active antenna, respectively, to minimize the difference between the first current value and the second current value, Calculating; And transmitting the multiple OFDM symbols by applying the calculated parameters to the ESPAR antenna transmitters. The variable includes a matrix representing a beam pattern, a voltage value applied to the active antenna through an RF chain connected to the active antenna, and an impedance value connected to the parasitic antenna.
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