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- W1751828394 abstract "We consider the coordinated downlink beamforming problem in a cellular network with the base stations (BSs) equipped with multiple antennas, and with each user equipped with a single antenna. The BSs cooperate in sharing their local interference information, and they aim at maximizing the sum rate of the users in the network. A set of new lower bounds (one bound for each BS) of the non-convex sum rate is identifie d. These bounds facilitate the development of a set of algorithms that allow the BSs to update their beams by optimizing their respective lower bounds. We show that when there is a single user per-BS, the lower bound maximization problem can be solved exactly with rank-1 solutions. In this case, the overall sum rate maximization problem can be solved to a KKT point. Numerical results show that the proposed algorithms achieve high system throughput with reduced backhaul information exchange among the BSs. I. I NTRODUCTION" @default.
- W1751828394 created "2016-06-24" @default.
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- W1751828394 date "2011-11-27" @default.
- W1751828394 modified "2023-09-27" @default.
- W1751828394 title "Lower Bounds Optimization for Coordinated Linear Transmission Beamformer Design in Multicell Network Downlink" @default.
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