Intercell Interference Mitigation with Long-Term Beamforming and Low SINR Feedback Rate in a Multiuser Multicell Unicast Scenario
- 1 April 2009
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 15502252,p. 1-5
- https://doi.org/10.1109/vetecs.2009.5073606
Abstract
This paper considers downlink transmit beamforming for a unicast transmission to a multitude of users with the goal of a joint optimization of the beamforming weights from multitude of basestations. In wireless systems, bandwidth is a limited resource. Therefore in this paper, a frequency reuse-1 is applied at the expense of intercell interference. The optimization of the beamforming weights is done with semideflnite programming with the knowledge of long term channel state information (CSI). This paper presents a fair beamforming technique that results in a very low signal to interference and noise rate (SINR) feedback rate. An improvement of the throughput for users in the cell edge region with a constrained transmit power is achieved.Keywords
This publication has 5 references indexed in Scilit:
- Quality of Service and Max-Min Fair Transmit Beamforming to Multiple Cochannel Multicast GroupsIEEE Transactions on Signal Processing, 2008
- Transmit beamforming for physical-layer multicastingIEEE Transactions on Signal Processing, 2006
- Convex OptimizationPublished by Cambridge University Press (CUP) ,2004
- Opportunistic beamforming using dumb antennasPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Using SeDuMi 1.02, A Matlab toolbox for optimization over symmetric conesOptimization Methods and Software, 1999