• Publications
  • Influence
Five disruptive technology directions for 5G
Five technologies that could lead to both architectural and component disruptive design changes: device-centric architectures, millimeter wave, massive MIMO, smarter devices, and native support for machine-to-machine communications are described.
Scenarios for 5G mobile and wireless communications: the vision of the METIS project
This article describes the scenarios identified for the purpose of driving the 5G research direction and gives initial directions for the technology components that will allow the fulfillment of the requirements of the identified 5G scenarios.
SLEEP mode techniques for small cell deployments
This article introduces energy-efficient SLEEP mode algorithms for small cell base stations in a bid to reduce cellular networks' power consumption and proposes three different strategies for algorithm control, relying on small cell driven, core network driven, and user equipment driven approaches.
Downlink and Uplink Cell Association With Traditional Macrocells and Millimeter Wave Small Cells
A general analytical model is developed to characterize and derive the uplink and downlink cell association in the view of the signal-to-interference-and-noise-ratio and rate coverage probabilities in a mixed deployment of traditional sub-6 GHz macrocells and mmWave small cells.
Downlink and Uplink Decoupling: A disruptive architectural design for 5G networks
This paper studies the notion of Downlink and Uplink Decoupling (DUDe) where the downlink cell association is based on the downlinks received power while the uplink isbased on the pathloss.
A Near-Optimum Technique using Linear Precoding for the MIMO Broadcast Channel
Asymptotically as the number of user K increases without bound, it is shown that block diagonalization with receive antenna selection under PAPC and SPC are asymPTotically optimal.
On transceiver design and channel quantization for downlink multiuser MIMO systems with limited feedback
An analytic characterization of the achievable throughput in the case of many users is provided and it is shown how additional receive antennas or higher multiuser diversity can reduce the required feedback rate to achieve a target throughput.
Why to decouple the uplink and downlink in cellular networks and how to do it
It is demonstrated that decoupling can lead to significant gains in network throughput, outage, and power consumption at a much lower cost compared to other solutions that provide comparable or lower gains.
User Selection Schemes for MIMO Broadcast Channels with Limited Feedback
A user selection algorithm and the supporting feedback scheme, for MIMO Gaussian broadcast channels with arbitrary number of users, transmit beamforming and limited channel state information available at the transmitter, and results show improved performance compared to other finite-rate feedback schemes.
Multiuser eigenmode transmission for mimo broadcast channels with limited feedback
We consider the problem of communicating in a MIMO broadcast channel (a point-to-multipoint system where both the transmitter and receivers employ multiple antennas) where the transmitter has