Robust group sparse beamforming for dense C-RANs with probabilistic SINR constraints

Y Teng, W Zhao - 2017 IEEE Wireless Communications and …, 2017 - ieeexplore.ieee.org
Next-generation cellular network may encounter unprecedented challenges, while cloud
radio access network (C-RAN) is regarded as a promising network architecture to meet the …

Efficient max-min power control for cell-free massive MIMO systems: An alternating projection-based approach

B Wang, J Wang, J Fang, H Duan… - IEEE Signal Processing …, 2021 - ieeexplore.ieee.org
We consider the problem of max-min power control for downlink cell-free (CF) massive
MIMO systems. Under the bisection framework, solving this problem amounts to solving a …

Black-Box Acceleration of Monotone Convex Program Solvers

P London, S Vardi, R Eghbali… - Operations …, 2024 - pubsonline.informs.org
This paper presents a black-box framework for accelerating packing optimization solvers.
Our method applies to packing linear programming problems and a family of convex …

Reconfigurable intelligent surface assisted federated learning with privacy guarantee

Y Yang, Y Zhou, T Wang, Y Shi - 2021 IEEE International …, 2021 - ieeexplore.ieee.org
In this paper, we consider a wireless federated learning (FL) system concerning differential
privacy (DP) guarantee, where multiple edge devices collaboratively train a shared model …

Joint admission control and beamforming for intelligent reflecting surface aided wireless networks

D Li, K Wang, H Zhu, Y Zhou… - 2021 IEEE International …, 2021 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is a promising technique that can enhance the spectral-
efficiency and energy-efficiency of wireless networks. The existing studies on resource …

Large-Scale Beamforming for Massive MIMO<? brk?> via Randomized Sketching

H Choi, T Jiang, Y Shi, X Liu, Y Zhou… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Massive MIMO system yields significant improvements in spectral and energy efficiency for
future wireless communication systems. The regularized zero-forcing (RZF) beamforming is …

Energy-efficient massive MIMO with decentralized precoder design

S Zhang, B Yin, Y Cheng, LX Cai… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
This paper presents an energy-efficient downlink precoding scheme in a multi-cell Massive
MIMO system. We approach the precoder design problem to maximize the system energy …

Adapting downlink power in fronthaul-constrained hierarchical software-defined RANs

X Chen, Z Han, Z Chang, G Xue… - 2017 IEEE Wireless …, 2017 - ieeexplore.ieee.org
The proof-of-concept software-defined radio access network (RAN) is not flexible enough
due to the inherent delay and the necessity of high-capacity fronthaul links. We are hence …

Low complexity antenna selection for low target rate users in dense cloud radio access networks

J Park, RW Heath - IEEE Transactions on Wireless …, 2016 - ieeexplore.ieee.org
We propose a low complexity antenna selection algorithm for low target rate users in cloud
radio access networks. The algorithm consists of two phases. In the first phase, each remote …

An alternating augmented Lagrangian method for constrained nonconvex optimization

G Galvan, M Lapucci, T Levato… - … Methods and Software, 2020 - Taylor & Francis
We consider the problem of minimizing a smooth nonconvex function over a structured
convex feasible set, that is, defined by two sets of constraints that are easy to treat when …