- Title
- Energy-efficient design for downlink cloud radio access networks
- Creator
- Vu, Tung; Ngo, Duy; Dao, Minh; Durrani, Salman; Nguyen, Duy; Middleton, Richard
- Date
- 2018
- Type
- Text; Conference proceedings
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/183889
- Identifier
- vital:16402
- Identifier
-
https://doi.org/10.1109/ICC.2018.8422878
- Identifier
- ISBN:978-1-5386-3180-5
- Abstract
- This work aims to maximize the energy efficiency of a downlink cloud radio access network (C-RAN), where data is transferred from a baseband unit in the core network to several remote radio heads via a set of edge routers over capacity-limited fronthaul links. The remote radio heads then send the received signals to their users via radio access links. We formulate a new mixed-integer nonlinear problem in which the ratio of network throughput and total power consumption is maximized. This challenging problem formulation includes practical constraints on routing, predefined minimum data rates, fronthaul capacity and maximum RRH transmit power. By employing the successive convex quadratic programming framework, an iterative algorithm is proposed with guaranteed convergence to a Fritz John solution of the formulated problem. Significantly, each iteration of the proposed algorithm solves only one simple convex program. Numerical examples with practical parameters confirm that the proposed joint optimization design markedly improves the C-RAN's energy efficiency compared to benchmark schemes.
- Publisher
- IEEE
- Relation
- 2018 IEEE International Conference on Communications (ICC); Kansas City, MO, USA; 20-24 May 2018 p. 1-6
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright IEEE
- Subject
- Downlink; Network coding; Power demand; Quality of service; Routing; Spread spectrum communication; Throughput
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