Kerdock codes for limited feedback precoded MIMO systems
IEEE Transactions on Signal Processing
Limited feedback unitary precoding for orthogonal space-time block codes
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
On the capacity of spatially correlated MIMO Rayleigh-fading channels
IEEE Transactions on Information Theory
Transmit beamforming in multiple-antenna systems with finite rate feedback: a VQ-based approach
IEEE Transactions on Information Theory
Distributed wireless communication system: a new architecture for future public wireless access
IEEE Communications Magazine
Systematic Codebook Designs for Quantized Beamforming in Correlated MIMO Channels
IEEE Journal on Selected Areas in Communications
An overview of limited feedback in wireless communication systems
IEEE Journal on Selected Areas in Communications
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The distributed antenna system is a promising technique to enhance system performance in next-generation broadband wireless mobile communications. The application of linear precoding with space time codeword based on channel state information can further enhance the link quality and reduce the receiver complexity in DASs. However, designing the optimal codebook for DAS to convey the precoding information remains an open issue. This article provides a tutorial addressing various issues of DASs with limited feedback, focusing on the challenges in its codebook design. A suboptimal codebook design is then proposed, suitable for DAS. Furthermore, an effective feedback reduction strategy without performance loss is presented by exploiting the channel correlation property. Numerical results are given to demonstrate the effectiveness of the proposed scheme.