M. Bengtsson and B. Ottersten, "Optimal and suboptimal transmit beamforming," in Handbook of Antennas in Wireless Communications. CRC Press, 2001, pp. 18-1-18-33, qC 20111107.
M. Bengtsson and B. Ottersten, "Optimal downlink beamforming using semidefinite optimization," in Proc. of Annual Allert. Conf. on Commun. Control and Computing, vol. 37. Citeseer, 1999, pp. 987-996.
M. Schubert and H. Boche, "Solution of the multiuser downlink beamforming with individual SINR constraints," IEEE Trans. Veh. Technol., vol. 53, no. 1, pp. 18-28, 2004.
W. Yu and T. Lan, "Transmitter optimization for the multi-antenna downlink with per-antenna power constraints," IEEE Trans. Signal Process., vol. 55, no. 6, pp. 2646-2660, June 2007.
N. Sidiropoulos, T. Davidson, and Z.-Q. Luo, "Transmit beamforming for physical-layer multicasting," IEEE Trans. Signal Process., vol. 54, no. 6, pp. 2239-2251, 2006.
E. Karipidis, N. Sidiropoulos, and Z.-Q. Luo, "Quality of service and max-min fair transmit beamforming to multiple cochannel multicast groups," IEEE Trans. Signal Process., vol. 56, no. 3, pp. 1268-1279, 2008.
D. Christopoulos, S. Chatzinotas, and B. Ottersten, "Weighted fair multicast multigroup beamforming under per-antenna power constraints," IEEE Trans. Signal Process., vol. 62, no. 19, pp. 5132-5142, Oct. 2014.
D. Christopoulos, S. Chatzinotas, and B. Ottersten, "Multicast multigroup beamforming under per-antenna power constraints," in Proc. of IEEE International Communications Conference (ICC), Sydney, AU, Jun. 2014, pp. 4704-4710.
M. Kaliszan, E. Pollakis, and S. Stanczak, "Multigroup multicast with application-layer coding: Beamforming for maximum weighted sum rate," in Wireless Communications and Networking Conference (WCNC), 2012 IEEE, 2012, pp. 2270-2275.
S. Stanczak, M. Wiczanowski, and H. Boche, Fundamentals of resource allocation in wireless networks: theory and algorithms. Springer Publishing Company, Incorporated, 2009.
Z.-Q. Luo, W.-K. Ma, A.-C. So, Y. Ye, and S. Zhang, "Semidefinite relaxation of quadratic optimization problems," IEEE Signal Processing Mag., vol. 27, no. 3, pp. 20-34, 2010.
S. Boyd and L. Vandenberghe, Convex optimization. Cambridge Univ. Press, 2004.