Joint Beamforming for Multicell Multigroup Multicast with Per-cell Power Constraints
Date Issued
2014
Date
2014
Author(s)
Wang, Hai-Han
Abstract
This thesis considers a joint beamforming design problem in the multicell multicast system with multiple groups that provide different multicast services using the same time-frequency resource. By jointly design beamforming vectors among
cooperative cells, the worst received signal-to-interference-plus-noise-ratio (SINR) of all serving users in the multiple multicast groups can be improved. Inspired by previous works in the literature, we apply semidefinite relaxation (SDR) technique to perform joint beamforming design among the cooperating base stations. Per-cell power constraints are considered which makes solving the problem challenging. We propose two algorithms to accommodate the per-cell power constraints while performing joint beamforming. Simulation results show that the proposed algorithms provide better performance compared to the existing multicast methods in the multicell environment.
Subjects
群播
結合式集波束
最佳化設計
半正定規劃
最小平衡值
Type
thesis
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