Abstract
We consider the robust beamforming problem under imperfect channel state information (CSI) subject to SINR constraints in a downlink multiuser MISO system. One popular approach to solve this nonconvex optimization problem is via semidefinite relaxation (SDR). In this paper, we prove that the SDR method is tight when the channel uncertainty bound is small or when the base station is equipped with two antennas.
Original language | English (US) |
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Title of host publication | 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Proceedings |
Pages | 3096-3099 |
Number of pages | 4 |
DOIs | |
State | Published - 2011 |
Externally published | Yes |
Event | 36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Prague, Czech Republic Duration: May 22 2011 → May 27 2011 |
Other
Other | 36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 |
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Country/Territory | Czech Republic |
City | Prague |
Period | 5/22/11 → 5/27/11 |
Keywords
- channel uncertainty
- Robust beamforming
- SDR
- SINR
ASJC Scopus subject areas
- Software
- Signal Processing
- Electrical and Electronic Engineering