EURASIP Journal on Advances in Signal Processing - Multiuser MIMO Transmission with Limited Feedback, Cooperation, and Coordination
Downlink assisted uplink zero forcing for TDD multiuser MIMO systems
EURASIP Journal on Wireless Communications and Networking - 3GPP LTE and LTE Advanced
Block diagonalization in the MIMO broadcast channel with delayed CSIT
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Linear beamforming for multiuser MIMO downlink systems with channel orthogonalization
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Low complexity coordinated beamforming in 2-user MIMO systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Low complexity non-iterative coordinated beamforming in 2-user broadcast channels
IEEE Transactions on Communications
A new SLNR-based linear precoding for downlink multi-user multi-stream MIMO systems
IEEE Communications Letters
Differential feedback of MIMO channel gram matrices based on geodesic curves
IEEE Transactions on Wireless Communications
EURASIP Journal on Wireless Communications and Networking - Special issue on interference management in wireless communication systems: theory and applications
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Wireless Communications & Mobile Computing
CSI Feedback for Dynamic Switching Between Single User and Multiuser MIMO
Wireless Personal Communications: An International Journal
Multiuser MIMO Transceiver Design for Uplink and Downlink with Imperfect CSI
Wireless Personal Communications: An International Journal
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In this paper, we propose a new joint optimization of linear transmit beamforming and receive combining vectors for the multiple-input multiple-output (MIMO) broadcast channel. We consider the transmission of a single information stream to two users with two or more receive antennas. Unlike past work in which iterative computation is required to design the beamformers, we derive specific formulations for the transmit beamformers for two active users via a power iteration and a generalized eigen analysis. To enable practical implementation, a new limited feedback algorithm is proposed that exploits the structure of the algorithm to avoid full channel quantization. The feedback overhead of the proposed algorithm is independent of the number of receive antennas. Monte Carlo simulations are used to evaluate the bit error rate and the sum rate performances of the proposed algorithm. Simulation results show that the proposed method performs close to the sum capacity of the MIMO broadcast channel even with limited feedback.