Linear transmit processing in MIMO communications systems
IEEE Transactions on Signal Processing - Part I
Joint transmitter receiver diversity for efficient space division multiaccess
IEEE Transactions on Wireless Communications
Duality, achievable rates, and sum-rate capacity of Gaussian MIMO broadcast channels
IEEE Transactions on Information Theory
Sum power iterative water-filling for multi-antenna Gaussian broadcast channels
IEEE Transactions on Information Theory
Sum-capacity computation for the Gaussian vector broadcast channel via dual decomposition
IEEE Transactions on Information Theory
Subchannel Allocation in Multiuser Multiple-Input–Multiple-Output Systems
IEEE Transactions on Information Theory
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We consider an innovative downlink multiuser MIMO scheme. Several users compete for the available resources in time, frequency and space. The proposed scheme exploits multiuser diversity and uses interference cancellation at the transmitter. We evaluate it for indoor, hot spot and multihop scenarios. Significant gains in terms of sum capacity can be achieved even under line of sight conditions. The theoretical limit can be approximately achieved in most scenarios. A nice feature of the proposed scheme is that it inherently provides some fairness regarding rate distribution among users even though fairness is not explicitly taken into account by the scheduler.