Antenna Port Selection in a Coordinated Cloud Radio Access Network

BULU G., Ahmad T., Gohary R. H., TOKER C., Yanikomeroglu H.

IEEE COMMUNICATIONS LETTERS, vol.21, no.3, pp.588-591, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.1109/lcomm.2016.2628380
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.588-591
  • Hacettepe University Affiliated: Yes


We investigate the optimization of antenna port selection in the downlink of a cloud radio access network in which a user terminal can be served by multiple ports. The goal is to maximize the minimum weighted signal-to-interference-plusnoise ratios observed by the users while satisfying their quality-of-service requirements. This optimization is formulated as a mixed integer programming problem and solved using semidefinite relaxation and Gaussian randomization. It is shown that our technique outperforms baseline schemes by 6-8 dB.