David Samuelsson, Mats Bengtsson, Björn E. Ottersten. An efficient algorithm for solving the downlink beamforming problem with indefinite constraints. In 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05, Philadelphia, Pennsylvania, USA, March 18-23, 2005. pages 905-908, IEEE, 2005. [doi]
Abstract is missing.