Reference : Coordinated Multipoint Transmission Design for Cloud-RANs With Limited Fronthaul Capa...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
Coordinated Multipoint Transmission Design for Cloud-RANs With Limited Fronthaul Capacity Constraints
Ha, Vu Nguyen mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Le, Long Bao []
Dao, Ngoc-Dung []
IEEE Transactions on Vehicular Technology
Institute of Electrical and Electronics Engineers
7432 - 7447
Yes (verified by ORBilu)
United States
[en] Cloud radio access network (Cloud-RAN) ; limited fronthaul capacity ; precoding and resource allocation
[en] In this paper, we consider the coordinated multipoint (CoMP) transmission design for the downlink cloud radio access network (Cloud-RAN). Our design aims to optimize the set of remote radio heads (RRHs) serving each user and the precoding and transmission power to minimize the total transmission power while maintaining the fronthaul capacity and users' quality-of-service (QoS) constraints. The fronthaul capacity constraint involves a nonconvex and discontinuous function that renders the optimal exhaustive search method unaffordable for large networks. To address this challenge, we propose two low-complexity algorithms. The first pricing-based algorithm solves the underlying problem through iteratively tackling a related pricing problem while appropriately updating the pricing parameter. In the second iterative linear-relaxed algorithm, we directly address the fronthaul constraint function by iteratively approximating it with a suitable linear form using a conjugate function and solving the corresponding convex problem. For performance evaluation, we also compare our proposed algorithms with two existing algorithms in the literature. Finally, extensive numerical results are presented, which illustrate the convergence of our proposed algorithms and confirm that our algorithms significantly outperform the state-of-the-art existing algorithms.

File(s) associated to this reference

Fulltext file(s):

Open access
Coordinated Multipoint Transmission Design for Cloud-RANs With Limited Fronthaul Capacity Constraints.pdfPublisher postprint1.52 MBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.