{"title":"Joint Beamforming Design and BBU Computational Resources Allocation in Heterogeneous C-RAN with QoS Guarantee","authors":"Mostafa M. Abdelhakam, M. M. Elmesalawy","doi":"10.1109/ISNCC.2018.8530999","DOIUrl":null,"url":null,"abstract":"In this paper, we consider the joint transmission coordinated multi-point (CoMP) technique in a downlink heterogeneous cloud radio access network (C-RAN). The joint beamforming design and baseband unit (BBU) computational resources allocation problem in Heterogenous C-RAN is investigated. This problem is formulated as an optimization problem to minimize the overall system power consumption under per-user quality-of-service (QoS), fronthaul capacity, per-antenna transmit power and per-remote radio head (RRH) total transmit power constraints. The considered problem is a non-convex optimization problem due to the presence of the binary indicator in the fronthaul constraints. To address this challenge, we use the re-weighted $\\boldsymbol{\\ell}_{1}$-norm technique and reformulate the problem into a tractable form. Then, we transform the problem to a weighted sum mean square error (MSE) minimization problem and propose a weighted minimum mean square error (WMMSE) algorithm to solve it. Simulation results are provided to verify the effectiveness of the proposed algorithm.","PeriodicalId":313846,"journal":{"name":"2018 International Symposium on Networks, Computers and Communications (ISNCC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 International Symposium on Networks, Computers and Communications (ISNCC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISNCC.2018.8530999","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
In this paper, we consider the joint transmission coordinated multi-point (CoMP) technique in a downlink heterogeneous cloud radio access network (C-RAN). The joint beamforming design and baseband unit (BBU) computational resources allocation problem in Heterogenous C-RAN is investigated. This problem is formulated as an optimization problem to minimize the overall system power consumption under per-user quality-of-service (QoS), fronthaul capacity, per-antenna transmit power and per-remote radio head (RRH) total transmit power constraints. The considered problem is a non-convex optimization problem due to the presence of the binary indicator in the fronthaul constraints. To address this challenge, we use the re-weighted $\boldsymbol{\ell}_{1}$-norm technique and reformulate the problem into a tractable form. Then, we transform the problem to a weighted sum mean square error (MSE) minimization problem and propose a weighted minimum mean square error (WMMSE) algorithm to solve it. Simulation results are provided to verify the effectiveness of the proposed algorithm.