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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/26503

Title: Dual connectivity in backhaul-limited massive-MIMO HetNets: User association and power allocation
Authors: Liu, Ye
Derakhshani, Mahsa
Lambotharan, Sangarapillai
Issue Date: 2017
Publisher: IEEE
Citation: LIU, Y., DERAKHSHANI, M. and LAMBOTHARAN, S., 2017. Dual connectivity in backhaul-limited massive-MIMO HetNets: User association and power allocation. Presented at the IEEE Global Communications Conference (IEEE GLOBECOM), Singapore, 4-8th December.
Abstract: With dual connectivity, a mobile user can be served by a macro base station (MBS) and a pico base station (PBS) simultaneously. In this paper, we address the problem of optimizing user-PBS association and power allocation in the uplink such that the network can serve the users’ demand at the minimum cost, where the PBSs are subject to backhaul capacity limitations and minimum rate requirements of users. We show that this non-convex problem can be formulated as a signomial geometric programming (SGP) whose solution can be found by solving a series of geometric programming (GP) problems. Simulation results are provided to demonstrate traffic offloading trend to PBSs for different cost and backhaul capacity settings, confirming the effectiveness of the proposed iterative algorithm. They also show that the output of the proposed algorithm closely matches the global optimal solution with affordable complexity.
Description: This paper is in closed access until it is published.
Sponsor: This work has been supported by the Engineering and Physical Science Research Council of the UK, EPSRC, under the grant EP/M015475.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/26503
Publisher Link: http://globecom2017.ieee-globecom.org/
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

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