Globally Optimal Energy Efficiency Maximization for Capacity-Limited Fronthaul Crans with Dynamic Power Amplifiers’ Efficiency
|Title:||Globally Optimal Energy Efficiency Maximization for Capacity-Limited Fronthaul Crans with Dynamic Power Amplifiers’ Efficiency||Authors:||Nguyen, Kien-Giang
|Permanent link:||http://hdl.handle.net/10197/10384||Date:||13-Sep-2018||Online since:||2019-05-09T10:28:58Z||Abstract:||A joint beamforming and remote radio head (RRH)-user association design for downlink of cloud radio access networks (CRANs) is considered. The aim is to maximize the system energy efficiency subject to constraints on users' quality-of-service, capacity offronthaullinks and transmit power. Different to the conventional power consumption models, we embrace the dependence of baseband signal processing power on the data rate, and the dynamics of the power amplifiers' efficiency. The considered problem is a mixed Boolean nonconvex program whose optimal solution is difficult to find. As our main contribution, we provide a discrete branch-reduce-and-bound (DBRnB) approach to solve the problem globally. We also make some modifications to the standard DBRnB procedure. Those remarkably improve the convergence performance. Numerical results are provided to confirm the validity of the proposed method.||Type of material:||Conference Publication||Publisher:||IEEE||Start page:||3759||End page:||3763||Copyright (published version):||2018 IEEE||Keywords:||Energy efficiency; CRAN; Limited fronthaul; Nonlinear power amplifier; Discrete branch-reduce-and-bound||DOI:||10.1109/icassp.2018.8461308||Other versions:||https://2018.ieeeicassp.org/||Language:||en||Status of Item:||Not peer reviewed||Is part of:||2018 IEEE International Conference on Acoustics, Speech and Signal Processing: Proceedings||Conference Details:||The 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Calgary, Canada, 15-20 April 2018||ISBN:||978-1-5386-4658-8|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
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