Convex Optimization
Linear precoding via conic optimization for fixed MIMO receivers
IEEE Transactions on Signal Processing
Linear Multiuser MIMO Transceiver Design With Quality of Service and Per-Antenna Power Constraints
IEEE Transactions on Signal Processing - Part I
Network coordination for spectrally efficient communications in cellular systems
IEEE Wireless Communications
Cooperative MIMO-OFDM Cellular System with Soft Handover Between Distributed Base Station Antennas
IEEE Transactions on Wireless Communications
On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming
IEEE Journal on Selected Areas in Communications
Distributed coordinated multi-cell transmission based on dual decomposition
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Joint MMSE transceiver designs and performance benchmark for CoMP transmission and reception
ISRN Communications and Networking
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Coordinated multi-cell processing facilitates multi-user precoding techniques across distributed base station (BS) antenna heads. Hence, it can efficiently exploit the available spatial degrees of freedom in a multi-user multiple-input multiple-output (MIMO) channel. A generalised method for joint design of linear transceivers with coordinated multi-cell processing subject to per-BS/antenna power constraints is proposed. The system optimisation objective is to balance the weighted SINR across all the transmitted data streams. The method can accommodate a variety of scenarios from coherent multi-cell beamforming across a large virtual MIMO channel to single-cell beamforming with inter-cell interference coordination and beam allocation. The performance of different coherent/non-coherent and coordinated/noncoordinated multi-cell transmission methods with optimal and heuristic beam allocation algorithms is numerically compared in different scenarios with varying inter-cell interference. The coherent multi-cell beamforming greatly outperforms the non-coherent cases, especially at the cell edge and with a full spatial load. However, the coordinated single-cell transmission with interference avoidance and dynamic beam allocation performs considerably well with a partial spatial loading.