We propose the QoS-aware BS-selection and the correspondingresource-allocation schemes for downlink multi-user transmissions over thedistributed multiple-input-multiple-output (MIMO) links, where multiplelocation-independent base-stations (BS), controlled by a central server,cooperatively transmit data to multiple mobile users. Our proposed schemes aimat minimizing the BS usages and reducing the interfering range of thedistributed MIMO transmissions, while satisfying diverse statistical delay-QoSrequirements for all users, which are characterized by the delay-boundviolation probability and the effective capacity technique. Specifically, wepropose two BS-usage minimization frameworks to develop the QoS-awareBS-selection schemes and the corresponding wireless resource-allocationalgorithms across multiple mobile users. The first framework applies the jointblock-diagonalization (BD) and probabilistic transmission (PT) to implementmultiple access over multiple mobile users, while the second one employstime-division multiple access (TDMA) approach to control multiple users' links.We then derive the optimal BS-selection schemes for these two frameworks,respectively. In addition, we further discuss the PT-only based BS-selectionscheme. Also conducted is a set of simulation evaluations to comparativelystudy the average BS-usage and interfering range of our proposed schemes and toanalyze the impact of QoS constraints on the BS selections for distributed MIMOtransmissions.
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