240 citations · 866 across the 44 of their papers we have counts for
6 papers · 1 filter
On the Secrecy Capacity of MIMO Wiretap Channels: Convex Reformulation and Efficient Numerical Methods
Anshu Mukherjee, Björn Ottersten, Le-Nam Tran
This paper presents novel numerical approaches to finding the secrecy capacity of the multiple-input multiple-output (MIMO) wiretap channel subject to multiple linear transmit cova…
Optimization of RIS-aided MIMO Systems via the Cutoff Rate
Nemanja Stefan Perović, Le-Nam Tran, Marco Di Renzo +1
The main difficulty concerning optimizing the mutual information (MI) in reconfigurable intelligent surface (RIS)-aided communication systems with discrete signaling is the inabili…
A Low-Complexity Approach for Max-Min Fairness in Uplink Cell-Free Massive MIMO
Muhammad Farooq, Hien Quoc Ngo, Le Nam Tran
We consider the problem of max-min fairness for uplink cell-free massive multiple-input multiple-output which is a potential technology for beyond 5G networks. More specifically, w…
Utility Maximization for Large-Scale Cell-Free Massive MIMO Downlink
Muhammad Farooq, Hien Quoc Ngo, Een-Kee Hong +1
We consider the system-wide utility maximization problem in the downlink of a cell-free massive multiple-input multiple-output (MIMO) system whereby a very large number of access p…
Achievable Rate Optimization for MIMO Systems with Reconfigurable Intelligent Surfaces
Nemanja Stefan Perović, Le-Nam Tran, Marco Di Renzo +1
Reconfigurable intelligent surfaces (RISs) represent a radical new technology that can shape the radio wave propagation in wireless communication systems and offers a great variety…
Noncoherent Joint Transmission Beamforming for Dense Small Cell Networks: Global Optimality, Efficient Solution and Distributed Implementation
Quang-Doanh Vu, Le-Nam Tran, Markku Juntti
We investigate the coordinated multi-point noncoherent joint transmission (JT) in dense small cell networks. The goal is to design beamforming vectors for macro cell and small cell…