40 citations · 106 across the 10 of their papers we have counts for
9 papers · 1 filter
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…
Energy Efficiency Fairness for Multi-Pair Wireless-Powered Relaying Systems
Kien-Giang Nguyen, Quang-Doanh Vu, Le-Nam Tran +1
We consider a multi-pair amplify-and-forward relay network where the energy-constrained relays adopting time-switching protocol harvest energy from the radio frequency signals tran…
Energy Efficiency Maximization for C-RANs: Discrete Monotonic Optimization, Penalty, and l0-Approximation Methods
Kien-Giang Nguyen, Quang-Doanh Vu, Markku Juntti +1
We study downlink of multiantenna cloud radio access networks (C-RANs) with finite-capacity fronthaul links. The aim is to propose joint designs of beamforming and remote radio hea…
Analysis and Optimization for Weighted Sum Rate in Energy Harvesting Cooperative NOMA Systems
Binh Van Nguyen, Quang-Doanh Vu, Kiseon Kim
We consider a cooperative non-orthogonal multiple access system with radio frequency energy harvesting, in which a user with good channel harvests energy from its received signal a…
Energy-Efficient Transmission Strategies for CoMP Downlink - Overview, Extension, and Numerical Comparison
Kien-Giang Nguyen, Oskari Tervo, Quang-Doanh Vu +2
This paper focuses on energy-efficient coordinated multi-point (CoMP) downlink in multi-antenna multi-cell wireless communications systems. We provide an overview of transmit beamf…
Globally Optimal Beamforming Design for Downlink CoMP transmission with Limited Backhaul Capacity
Kien-Giang Nguyen, Quang-Doanh Vu, Markku Juntti +1
This paper considers a multicell downlink channel in which multiple base stations (BSs) cooperatively serve users by jointly precoding shared data transported from a central proces…
Energy Efficient Precoding C-RAN Downlink with Compression at Fronthaul
Kien-Giang Nguyen, Quang-Doanh Vu, Markku Juntti +1
This paper considers a downlink transmission of cloud radio access network (C-RAN) in which precoded baseband signals at a common baseband unit are compressed before being forwarde…
Conic Quadratic Formulations for Wireless Communications Design
Quang-Doanh Vu, Markku Juntti, Een-Kee Hong +1
As a wide class of resource management problems in wireless communications are nonconvex and even NP-hard in many cases, finding globally optimal solutions to these problems is of…
Time Reversal-based Transmissions with Distributed Power Allocation for Two-Tier Networks
Vu Tran-Ha, Quang-Doanh Vu, Een-Kee Hong
Radio pollution and power consumption problems lead to innovative development of green heterogeneous networks (HetNet). Time reversal (TR) technique which has been validated from w…