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It has been long believed that the distributed antenna system (DAS) has great potentials for capacity improvement compared to the traditional cellular system with co-located base-station antennas. Intuitively, the distributed characteristic of antennas provides a much more efficient utilization of spatial resources. It, however, also significantly complicates the channel modeling and system analysis...
This paper provides a comparative study of the distributed antenna system (DAS) and the conventional co-located antenna system (CAS) in the multi-user scenario. It is demonstrated that thanks to the decrease of the maximum minimum access distance, a tremendous transmission power gain can be achieved by DASs. Besides, the DAS has great potentials to outperform the CAS in terms of multi-user capacity...
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