On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Queuing with adaptive modulation and coding over wireless links: cross-Layer analysis and design
IEEE Transactions on Wireless Communications
Adaptive scheduling for MIMO wireless networks: cross-layer approach and application to HSDPA
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
On the capacity of multiuser wireless channels with multiple antennas
IEEE Transactions on Information Theory
Subchannel Allocation in Multiuser Multiple-Input–Multiple-Output Systems
IEEE Transactions on Information Theory
Performance Analysis of Scheduling in Multiuser MIMO Systems with Zero-Forcing Receivers
IEEE Journal on Selected Areas in Communications
Buffer sizing in TxSDMA systems
MACOM'11 Proceedings of the 4th international conference on Multiple access communications
Performance Analysis on Adaptive Modulation-based BLAST Systems with Queuing Model
Wireless Personal Communications: An International Journal
The Role of the Queueing Process in the Performance of Downlink SDMA Systems
Wireless Personal Communications: An International Journal
Computer Networks: The International Journal of Computer and Telecommunications Networking
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We develop a queuing analytic model to study cross-layer effects on Quality of Service (QoS) performance for downlink transmission in a Vertical Bell Laboratories Layered Space-Time Architecture (V-BLAST) Multiple Input Multiple Output (MIMO) wireless system exploiting multiuser diversity. As in multiuser Single Input Single Output (SISO) systems, multiuser diversity has been shown to have a great potential in improving system throughput in multiuser MIMO systems as well. In a V-BLAST MIMO system, the transmit antennas can carry parallel streams and multiple users can be scheduled for transmissions at the same time. We consider a multiuser diversity scheme that can effectively exploit this extra dimension in multiuser scheduling. To investigate the cross-layer aspect of the performance improvement, we perform a queuing analysis to derive buffer statistics, queuing delay distribution, packet throughput and loss rate experienced in the data link layer when this multiuser diversity technique is deployed in the system. We also present selected numerical results to show how the queuing model can help us to relate these important QoS measures to relevant physical layer and traffic parameters. Usefulness of the developed analytical model is also demonstrated through example applications.