A multiuser MIMO transmit beamformer based on the statistics of the signal-to-leakage ratio
EURASIP Journal on Wireless Communications and Networking
Transmit beamforming and power allocation for downlink OFDMA systems
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Improved linear transmit processing for single-user and multi-user MIMO communications systems
IEEE Transactions on Signal Processing
Efficient GSVD based multi-user MIMO linear precoding and antenna selection scheme
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Multi-user Multi-stream Vector Perturbation Precoding
Wireless Personal Communications: An International Journal
Hi-index | 35.69 |
The paper develops a dynamic antenna scheduling strategy for downlink MIMO communications, where a subset of the receive antennas at certain users is selectively disabled. The proposed method improves the signal-to-leakage-plus-noise (SLNR) ratio performance of the system and it relaxes the condition on the number of transmit-receive antennas in comparison to traditional zero-forcing and time-scheduling strategies. The largest value that the SLNR can achieve is shown to be equal to the maximum eigenvalue of a certain random matrix combination, and the probability distribution of this eigenvalue is characterized in terms of a Whittaker function. The result shows that increasing the number of antennas at some users can degrade the SLNR performance at other users. This fact is used to propose an antenna scheduling scheme that leads to improvement in terms of SINR outage probabilities