Antenna Port Selection in a Coordinated Cloud Radio Access Network
IEEE COMMUNICATIONS LETTERS, vol.21, no.3, pp.588-591, 2017 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 21 Issue: 3
- Publication Date: 2017
- Doi Number: 10.1109/lcomm.2016.2628380
- Journal Name: IEEE COMMUNICATIONS LETTERS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.588-591
- Hacettepe University Affiliated: Yes
Abstract
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.