OFDM SYMBOL TRANSMITING USING ESPAR ANTENNA IN BEAMSPACE MIMO SYSTEM

摘要

An ESPAR antenna transmitter and a multiple OFDM symbols transmitting method in a beamspace MIMO environment are disclosed in the present invention. According to an embodiment of the present invention, the method for transmitting independent multiple OFDM symbols through an ESPAR antenna transmitter in a beamspace MIMO system comprises the steps of: calculating, under a plurality of constraints, a variable for minimizing a difference between a first current value and second current values, wherein the first current value is calculated by mapping a matrix representing a beam pattern of the beamspace MIMO system with respect to the multiple OFDM symbols, and the second current values are implemented through the ESPAR antenna transmitter and respectively applied to an active antenna and a plurality of parasitic antennas disposed around the active antenna; and transmitting the multiple OFDM symbols by applying the calculated variable with respect to the ESPAR antenna transmitter. At this case, the variable includes the matrix representing the beam pattern, a voltage value applied to the active antenna through an RF chain connected to the active antenna, and an impedance load connected to the parasitic antenna.