CONTINUOUS BEAMFORMING FOR MIMO-OFDM SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide continuous beamforming for a MIMO-OFDM system.SOLUTION: A transmitting entity performs spatial processing on data symbols for each subband with an eigenmode matrix, a steering matrix, or an identity matrix to obtain spatially processed symbols for the subband. The data symbols may be sent on orthogonal spatial channels with the eigenmode matrix, on different spatial channels with the steering matrix, or from different transmit antennas with the identity matrix. The transmitting entity further performs beamforming on the spatially processed symbols, in the frequency domain or time domain, prior to transmission from the multiple transmit antennas. The receiving entity may derive a spatial filter matrix for each subband on the basis of a MIMO channel response for that subband and perform receiver spatial processing for the subband with the spatial filter matrix.