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Scheduling and feedback reduction in coordinated networks

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2 Author(s)
Bang, H.J. ; Elliptic Labs., Oslo, Norway ; Orten, P.

Base station coordination has received much attention as a means to reduce the inter-cell interference in cellular networks. However, this interference reducing ability comes at the expense of increased feedback, backhaul load and computational complexity. The degree of coordination is therefore limited in practice. In this paper, we explore the trade-off between capacity and feedback load in a cellular network with coordination clusters. Our main interest lies in a scenario with multiple fading users in each cell. The results indicate that a large fraction of the total gain can be achieved by a significant reduction in feedback. We also find an approximate expression for the distribution of the instantaneous signal to interference-plus-noise ratio (SINR) and propose a new effective scheduling algorithm.

Published in:

Communications and Networks, Journal of  (Volume:13 ,  Issue: 4 )