Patent ID: 7697622
Filing Date: 2010-04-13
Classification: H04B,H04L

Abstract:
1. A method for transmitting data in a base station of a wireless communication system that transmits data depending on channel status information fed back from terminals and uses a plurality of antennas in a Multiple-Input Multiple-Output (MIMO) scheme, the method comprising the steps of: determining a terminal to which the base station will transmit data, determining antennas via which the base station will transmit data among the plurality of antennas, and determining a space pre-coding method based on the channel status information; multiplexing transmission data into a plurality of data streams according to the number of the determined antennas, and performing coding and modulation on each of the data streams; outputting a matrix select signal for selecting one of a plurality of space pre-coding matrixes according to the space pre-coding method, and spatial-coding each of the coded streams with the matrix selected based on the matrix select signal; and performing Orthogonal Frequency Division Multiplexing (OFDM) modulation on each of the spatial-coded streams, and transmitting each of the OFDM-modulated streams via an associated antenna.