ZERO-FORCING MULTIUSER MULTI-INPUT MULTI-OUTPUT TWO-WAY RELAYING COMMUNICATION METHOD

摘要

The present invention relates to a method for effectively improving communication capacity of a multiuser multi-input multi-output cellular communication system which allows two-way relay, according to the present invention, effectively improves a communication capacity in an cellular communication system by enabling network coding which is unknown in an existing cellular communication system which comprises a plurality of communication terminal nodes having one base station having a plurality of transmission/reception antennae, one relay node and one transmission/reception antenna. [Reference numerals] (S21) Selecting N user terminal nodes corresponding to a smaller number between N_B and N_V; (S22) Generating a channel matrix from base station node to relay node and a channel matrix from user terminal node to relay node; (S23) Generating a codeword vector to be transmitted from the base station to the k^th user terminal node and a a codeword vector to be transmitted from the k^th user terminal node to the base station through horizontal encoding of the user terminal nodes; (S24) Generating a transmission signal of the base station node through linear line-encoding; (S25) Generating a transmission signal of the user terminal node; (S26) Generating a reception signal received in the relay node; (S27) Decoding each codeword from the reception signal using a horizontal sequential interference cancellation method; (S28) Encoding the decoded signal through a grid code in the relay node and transmitting to each base station node and user terminal node; (S29) Decoding its own signal from the signal encoded by the grid code in the each base station node and user terminal node