Transmitter and receiver for multiuser mimo system based on vector perturbation

PURPOSE: A transmission apparatus and reception apparatus for a vector perturbation based multiuser multiple antenna system are provided to eliminate interference between users by dividing a data stream by considering of distortion rates according to noise, a fading channel, and the interference. CONSTITUTION: A vector perturbation unit(110) executes vector perturbation for a transmission target user symbol. An adder(120) outputs a first data symbol by adding the user symbol and a perturbation symbol. A first pre-coding unit(130) creates a second data symbol by multiplying the first data symbol by the set first pre-coding matrix. A second pre-coding unit(140) creates a third data symbol by multiplying the second data symbol by the set second pre-coding matrix. A plurality of transmission antennas(150) transmits the created third data symbol.