On Single-User Collaborative Random Beamforming
In recent years, multi-cell DownLink (DL) collaborative Multi-Input Multi-Output (MIMO) transmission has drawn a lot of attentions due to its potential benefits in system throughput. However, the requirements on training and feedback may hamper its practical applications. In this paper, the authors consider a single-user Collaborative Random BeamForming (Co-RBF) scheme to ease the training and feedback burden in a multi-cell environment. The proposed single-user collaborative random beamforming system, either with and without additional transmitter phase adjustments, are described and analyzed from outage probability perspective.