作者
Guido Dartmann, Gerd Ascheid
发表日期
2013/5/31
期刊
IEEE transactions on vehicular technology
卷号
62
期号
9
页码范围
4643-4648
出版商
IEEE
简介
Multicast downlink transmission in a multicell network with multiple users is investigated. Max–min beamforming (MB) enables a fair distribution of the signal-to-interference-plus-noise ratio (SINR) among all users in a network for given power constraints at the base stations (BSs) of the network. The multicast MB problem (MBP) is proven to be NP-hard and nonconvex in general. However, the MBP has an equivalent quasi-convex (QC) form and can be optimally solved with an efficient algorithm for special instances, depending on the structure of the available channel state information (CSI). This paper derives the equivalent QC form of the MBP for the practically relevant scenario of long-term CSI in the form of Hermitian positive semi-definite Toeplitz (HPST) matrices and per-antenna array power constraints. The optimization problem is then given by a convex feasibility check problem with finite autocorrelation …
引用总数
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