QoS-based resource allocation and transceiver optimization
Communications and Information Theory
Stable transmission in the time-varying MIMO broadcast channel
EURASIP Journal on Advances in Signal Processing
Power Control in Wireless Cellular Networks
Foundations and Trends® in Networking
Code design for MIMO broadcast channels
IEEE Transactions on Communications
Rate balancing in multiuser MIMO OFDM systems
IEEE Transactions on Communications
IEEE Transactions on Communications
IEEE Transactions on Signal Processing
Multiple peer-to-peer communications using a network of relays
IEEE Transactions on Signal Processing
Joint beamforming and power control for multiantenna relay broadcast channel with QoS constraints
IEEE Transactions on Signal Processing
Non-linear transceiver designs with imperfect CSIT using convex optimization
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Robust THP transceiver designs for multiuser MIMO downlink with imperfect CSIT
EURASIP Journal on Advances in Signal Processing - Multiuser MIMO Transmission with Limited Feedback, Cooperation, and Coordination
Rank-constrained separable semidefinite programming with applications to optimal beamforming
IEEE Transactions on Signal Processing
Weighted sum-rate maximization using weighted MMSE for MIMO-BC beamforming design
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Coordinated linear beamforming in downlink multi-cell wireless networks
IEEE Transactions on Wireless Communications
Coordinated beamforming for the multicell multi-antenna wireless system
IEEE Transactions on Wireless Communications
Robust Tomlinson-Harashima Precoders for Multiuser MISO Downlink with Imperfect CSI
Wireless Personal Communications: An International Journal
Mutual information bounds for MIMO channels under imperfect receiver CSI
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Robust precoding with Bayesian error modeling for limited feedback MU-MISO systems
IEEE Transactions on Signal Processing
Multi-cell MIMO cooperative networks: a new look at interference
IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
Coordinated multi-cell systems: carrier frequency offset estimation and correction
IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
MSE-based transceiver designs for the MIMO interference channel
IEEE Transactions on Wireless Communications
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We study the problem of power efficient multiuser beamforming transmission for both uplink and downlink. The base station is equipped with multiple antennas, whereas the mobile units have single antennas. In the uplink, interference is canceled by successive decoding. In the downlink, ideal "dirty paper" precoding is assumed. The design goal is to minimize the total transmit power while maintaining individual SINR constraints. In the uplink, the optimization problem is solved by a recursive formula with low computational complexity. The downlink problem is solved by exploiting the duality between uplink and downlink; thus, the uplink solution carries over to the downlink. In the second part of the paper, we show how the solution can be applied to the problem of rate balancing in Gaussian multiuser channels. We propose a strategy for throughput-wise optimal transmission for broadcast and multiple access channels under a sum power constraint. Finally, we show that single-user transmission achieves the sum capacity in the low-SNR regime. We completely characterize the SNR-range where single-user transmission is optimal.