TRANSMITTING AND RECEIVING APPARATUS AND METHOD IN CLOSED-LOOP MULTIPLE-INPUT MULTIPLE-OUTPUT ANTENNA SYSTEM USING CODEBOOK

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and method for reducing the quantity of calculations accompanying a codebook search for a MIMO communication system using a closed-loop system.;SOLUTION: The receiver of the MIMO antenna system includes a window size decider which stores a codebook with beamforming weights and selects and outputs the beamforming weights corresponding to a specified window size from the codebook, and a beamforming weight selector which selects an optimal beamforming weight based on a current channel state among the beamforming weights output from the window size decider, and feeds back the selected optimal beamforming weight to a transmitter.;COPYRIGHT: (C)2007,JPO&INPIT