Load modulation-based beamspace MIMO transmission method and apparatus

摘要

Disclosed are a load modulation-based beamspace MIMO transmission method and apparatus. The beamspace MIMO transmission apparatus may include a plurality of impedance loading circuits each including a plurality of imaginary impedance devices, a beamspace MIMO control unit calculating loading values of the plurality of imaginary impedance devices, corresponding to a spatial multiplexing orthogonal frequency division multiplexing (OFDM) sample, and an RF chain unit generating a first signal having a predetermined carrier frequency.

主权项

1. A beamspace multi-input multi-output (MIMO) transmission apparatus, comprising:
a plurality of impedance loading circuits including a plurality of imaginary impedance devices each connected to a plurality of antenna elements; a beamspace MIMO control unit calculating loading values of the plurality of imaginary impedance devices based on current vectors introduced to the plurality of antenna elements, corresponding to a spatial multiplexing orthogonal frequency division multiplexing (OFDM) sample for beamspace multi-input multi-output (MIMO) and setting the calculated loading values in the plurality of impedance devices; and an RF chain unit generating a first signal having a predetermined carrier frequency and transmitting the generated first signal to the plurality of impedance loading circuits, wherein the beamspace MIMO control unit includes a delay unit delaying the spatial multiplexing OFDM sample by a predetermined time, and the predetermined time is synchronized with a transmission time of the first signal.