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Multicast transmission is an effective technology for data transmission in modern mobile communication systems. Since most application are based on SNR threshold at receiver, it is critical to guarantee the access rate. The problem of beamforming for single group multicast systems is considered to maximize the access rate. We first discuss the access control and some special cases. Closed-form solutions...
In this paper, a novel optimization objective namely weighted sum rate is proposed for beamformer design in single group multicast systems. As an upper bound and special case of maximizing minimum rate, it can overcome previous disadvantages of computation complexity and sensitivity to channel state when the weights are chosen properly. Although the corresponding optimization problem is nonconvex,...
The problem of energy-efficient joint beamforming and antenna selection for multicast systems is consider in this paper. Under the performance objective of maximizing the number of bits per joule of energy consumed, beamformer design, optimal transmit power and antenna selection is discussed respectively. The beamforming problem is converted to an equivalent form of the max-min problem and we propose...
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