5 papers · 1 filter
Convex Optimization-Based Procedures for Non-Convex Quadratic Problems
Mahmoud Zaher, Emil Björnson
Mathematical optimization plays a fundamental role in signal processing and wireless communications, serving as an essential framework for the systematic design of modern systems.…
Low-Complexity ADMM-Based Multicast Beamforming in Cell-Free Massive MIMO Systems
Mahmoud Zaher, Emil Björnson
The growing demand for efficient delivery of common content to multiple user equipments (UEs) has motivated significant research in physical-layer multicasting. By exploiting the b…
Cell-Free Beamforming Design for Physical Layer Multigroup Multicasting
Mahmoud Zaher, Emil Björnson, Marina Petrova
In many wireless communication applications, it is desirable to transmit the same data to multiple user equipments (UEs). Physical layer multicasting presents an efficient transmis…
Low-Complexity SDP-ADMM for Physical-Layer Multicasting in Massive MIMO Systems
Mahmoud Zaher, Emil Björnson
There is a demand for the same data content from several user equipments (UEs) in many wireless communication applications. Physical-layer multicasting combines the beamforming cap…
Unknown Interference Modeling for Rate Adaptation in Cell-Free Massive MIMO Networks
Mahmoud Zaher, Emil Björnson, Marina Petrova
Co-channel interference poses a challenge in any wireless communication network where the time-frequency resources are reused over different geographical areas. The interference is…