Symbol-Wise Beamforming with Limited Feedback for MIMO-OFDM Systems

In this paper, we consider the symbol-wise beamforming with limited feedback for MIMO-OFDM systems in the presence of co-channel interference. We propose a non-iterative algorithm for the symbol-wise beamforming with limited feedback, which provides the considerable performance with low computational complexity. We also propose the codebook for the symbol-wise beamforming with limited feedback under spatially correlated frequency-selective channel. It is clear from our simulation that our proposed scheme outperforms the symbol-wise beamforming with limited feedback based on the iterative algorithm. We also confirm that our proposed codebook shows a better performance compared to the random vector quantization (RVQ) codebook.