Fast Converging Algorithm for Weighted Sum Rate Maximization in Multicell MISO Downlink

作者：Le Nam Tran^*; Hanif Muhammad Fainan; Tolli Antti; Juntti Markku

来源：IEEE Signal Processing Letters, 2012, 19(12): 872-875.

DOI：10.1109/LSP.2012.2223211

• Beamforming
• convex approximation
• multicell downlink
• weighted sum rate maximization

The problem of maximizing weighted sum rates in the downlink of a multicell environment is of considerable interest. Unfortunately, this problem is known to be NP-hard. For the case of multi-antenna base stations and single antenna mobile terminals, we devise a low complexity, fast and provably convergent algorithm that locally optimizes the weighted sum rate in the downlink of the system. In particular, we derive an iterative second-order cone program formulation of the weighted sum rate maximization problem. The algorithm converges to a local optimum within a few iterations. Superior performance of the proposed approach is established by numerically comparing it to other known solutions.

• 出版日期2012-12