Efficient beamforming algorithms for MIMO multicast with application-layer coding

A communication scheme for the multiple antenna multicast fading channel is proposed, in which the transmission is coded at the application layer over a number of channel realizations. The scheme gives rise to a novel multicast transmit beamforming problem. The properties of the proposed scheme are presented, in particular the scaling of the achievable rate for the increasing number of users is investigated and the rate is shown not to decrease to zero, which is an improvement over multicast schemes without coding, e.g. so-called max-min transmit beamforming. Algorithms for solving the resulting beamforming problem are proposed and evaluated in simulation.

[1]  Praveen Kumar Gopala,et al.  Opportunistic multicasting , 2004, Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004..

[2]  N.D. Sidiropoulos,et al.  Joint Multicast Beamforming and Admission Control , 2007, 2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing.

[3]  Zhi-Quan Luo,et al.  Capacity Limits of Multiple Antenna Multicast , 2006, 2006 IEEE International Symposium on Information Theory.

[4]  Nikos D. Sidiropoulos,et al.  Transmit beamforming for physical-layer multicasting , 2006, IEEE Transactions on Signal Processing.

[5]  Michael Luby,et al.  LT codes , 2002, The 43rd Annual IEEE Symposium on Foundations of Computer Science, 2002. Proceedings..

[6]  Angel Lozano,et al.  Long-Term Transmit Beamforming for Wireless Multicasting , 2007, 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07.

[7]  Paul Tseng,et al.  Approximation Bounds for Quadratic Optimization with Homogeneous Quadratic Constraints , 2007, SIAM J. Optim..

[8]  Shlomo Shamai,et al.  Optimal Power and Rate Control for Minimal Average Delay: The Single-User Case , 2006, IEEE Transactions on Information Theory.