METHOD OF COMMUNICATING BETWEEN BASE STATION AND TERMINAL BASED ON INTERFERENCE ALIGNMENT IN MULTICELL MULTIUSER MIMO INTERFERENCE CHANNEL AND METHOD AND APPARATUS OF COMMUNICATION USING INTERFERENCE ALIGNMENT AND BLOCK SUCCESSIVE INTERFERENCE PRE-CANCELLATION FOR MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT INTERFERENCE CHANNEL

摘要

PURPOSE: A method for communicating between a terminal and a base station based on interference alignment in a multi cell multi user multiple input multiple output (MIMO) antenna interference channel environment and a communication method using interference alignment and block successive interference pre-cancellation in a multi user MIMO interference channel are provided to perform communication by aligning interference in order to maximize signal to interference and noise ratio (SINR) and signal to leakage and noise ratio (SLNR) in the multi cell multi user MIMO antenna interference channel. CONSTITUTION: A channel matrix between antennas installed in a terminal and antennas installed in a first base station (111) and a channel matrix between the antennas installed in the terminal and antennas installed in a second base station (121) are recognized. A channel matrix between antenna installed in at least one other terminal in a first cell and antennas installed in the first base station and a channel matrix between the antennas installed in the at least one other terminal and antennas installed in the second base station are recognized. A precoding matrix used in communication between the first base station and the terminal is determined on the basis of the channel matrixes, in order to maximize SLNR for the terminal. [Reference numerals] (110) First cell; (111) First base station; (112,113,122,AA,DD,EE) Device; (120) Second cell; (121) Second base station; (BB) K^th cell; (CC) K^th base station