Enhancing LTE with Cloud-RAN and Load-Controlled Parasitic Antenna Arrays

Matteo Artuso, Dora Boviz, Aleksandra Checko, Henrik L. Christiansen, Bruno Clerckx, Laura Cottatellucci, David Gesbert, Bobby Gizas, Aravinthan Gopalasingham, Faheem Khan, Jean Marc Kelif, Ralf Muller, Dimitrios Ntaikos, Konstantinos Ntougias, Constantinos B. Papadias, Borzoo Rassouli, Mohammad Ali Sedaghat, Tharmalingam Ratnarajah, Laurent Roullet, Stephane SenecalHaifan Yin, Lin Zhou

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Cloud radio access network systems, consisting of remote radio heads densely distributed in a coverage area and connected by optical fbers to a cloud infrastructure with large computational capabilities, have the potential to meet the ambitious objectives of next generation mobile networks. Actual implementations of C-RANs tackle fundamental technical and economic challenges. In this article, we present an end-to-end solution for practically implementable C-RANs by providing innovative solutions to key issues such as the design of cost-effective hardware and power-effective signals for RRHs, efcient design and distribution of data and control trafc for coordinated communications, and conception of a flexible and elastic architecture supporting dynamic allocation of both the densely distributed RRHs and the centralized processing resources in the cloud to create virtual base stations. More specifcally, we propose a novel antenna array architecture called load-controlled parasitic antenna array (LCPAA) where multiple antennas are fed by a single RF chain. Energy-and spectral-efcient modulation as well as signaling schemes that are easy to implement are also provided. Additionally, the design presented for the fronthaul enables flexibility and elasticity in resource allocation to support BS virtualization. A layered design of information control for the proposed end-to-end solution is presented. The feasibility and effectiveness of such an LCPAA-enabled C-RAN system setup has been validated through an over-the-air demonstration.

Original languageEnglish
Article number7736614
Pages (from-to)183-191
Number of pages9
JournalIEEE Communications Magazine
Issue number12
Publication statusPublished - 2016 Dec

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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