IEEE Transactions on Signal Processing
Spectrum sharing in wireless networks via QoS-aware secondary multicast beamforming
IEEE Transactions on Signal Processing
On multicast beamforming for minimum outage
IEEE Transactions on Wireless Communications
Transmit precoding design for multi-antenna multicast broadcast services with limited feedback
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Low complexity power control and beamforming for multigroup multicast MIMO downlink channel
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Rank-constrained separable semidefinite programming for optimal beamforming design
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
IEEE Transactions on Signal Processing
Rank-constrained separable semidefinite programming with applications to optimal beamforming
IEEE Transactions on Signal Processing
Code design for radar STAP via optimization theory
IEEE Transactions on Signal Processing
Reduced computational complexity beamspace beamforming design for MIMO multicast systems
NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
Utility of beamforming strategies for secrecy in multiuser MIMO wiretap channels
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Capacity limits of multi-antenna multicasting under correlated fading channels
IEEE Transactions on Communications
Simple, zero-feedback, distributed beamforming with unsynchronized carriers
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Beamforming-based physical layer network coding for non-regenerative multi-way relaying
EURASIP Journal on Wireless Communications and Networking - Special issue on physical-layer network coding for wireless cooperative networks
ASIC: an architecture for scalable intra-domain control in OpenFlow
Proceedings of the 7th International Conference on Future Internet Technologies
Wireless Personal Communications: An International Journal
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The problem of transmit beamforming to multiple cochannel multicast groups is considered, when the channel state is known at the transmitter and from two viewpoints: minimizing total transmission power while guaranteeing a prescribed minimum signal-to-interference-plus-noise ratio (SINR) at each receiver; and a "fair" approach maximizing the overall minimum SINR under a total power budget. The core problem is a multicast generalization of the multiuser downlink beamforming problem; the difference is that each transmitted stream is directed to multiple receivers, each with its own channel. Such generalization is relevant and timely, e.g., in the context of the emerging WiMAX and UMTS-LTE wireless networks. The joint problem also contains single-group multicast beamforming as a special case. The latter (and therefore also the former) is NP-hard. This motivates the pursuit of computationally efficient quasi-optimal solutions. It is shown that Lagrangian relaxation coupled with suitable randomization/cochannel multicast power control yield computationally efficient high-quality approximate solutions. For a significant fraction of problem instances, the solutions generated this way are exactly optimal. Extensive numerical results using both simulated and measured wireless channels are presented to corroborate our main findings.