Utility Maximization in the Multi-User MISO Downlink with Linear Precoding

  title={Utility Maximization in the Multi-User MISO Downlink with Linear Precoding},
  author={Johannes Brehmer and Wolfgang Utschick},
  journal={2009 IEEE International Conference on Communications},
The maximization of an increasing function over the set of achievable rates in a multi-user, multi-antenna downlink is addressed. In general, the set of rates achievable by linear precoding and treating interference as noise is nonconvex. As a result, the corresponding utility maximization problem is nonconvex. The rate region can be convexified by time sharing, and the utility maximization over the convexified region can be solved via Lagrange duality. Still, subproblems in the dual problem… CONTINUE READING
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