Antenna Port Selection in a Coordinated Cloud Radio Access Network

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

IEEE COMMUNICATIONS LETTERS, cilt.21, sa.3, ss.588-591, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 3
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1109/lcomm.2016.2628380
  • Dergi Adı: IEEE COMMUNICATIONS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.588-591
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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.