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- W2000981853 abstract "We study a system where a base station (BS) with an antenna array serves multiple users. Each user has a single antenna. Due to practical limitations, each antenna of the BS has an individual power constraint. Assume that only long-term channel state information (CSI) is available. The objective is to minimize the downlink transmission power under the users' signal-to-interference-plus-noise ratio (SINR) constraints and the per-antenna power constraints. Mathematically, the objective is to find the optimal solution of a non-convex optimization problem. With dual decomposition, the problem is decomposed into two levels. For the lower level problem, we propose a novel iterative method based on the theory of matrix pencils. For the higher level problem, we propose a subgradient method and prove its convergence. Assembling all the computation methods, we obtain a beamforming and power control algorithm. At last, numerical results are provided to illustrate the performance of the algorithm." @default.
- W2000981853 created "2016-06-24" @default.
- W2000981853 creator A5018901692 @default.
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- W2000981853 date "2014-04-01" @default.
- W2000981853 modified "2023-10-16" @default.
- W2000981853 title "Downlink beamforming and power control with per-antenna power constraints" @default.
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- W2000981853 doi "https://doi.org/10.1109/wcnc.2014.6952321" @default.
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