Joint proportional fair user scheduling for in-building distributed antenna systems

This study exploits coordinated proportional fair (PF) user scheduling for in-building distributed antenna systems (DAS) to address the co-channel interference problem. The PF algorithm for multiple remote units in the DAS has been analysed and two sub-optimal solutions have been proposed, which manage to maximise the subcarrier-wise summation of PF ratio either in a brute-force search manner or in a greedy manner with lower complexity. System-level evaluation shows that the throughput of the cell edge users can indeed be significantly improved, whereas the average throughput of radio units in the proposed schemes also outperforms that in the conventional PF scheme.