109 citations · 109 across the 9 of their papers we have counts for
10 papers
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.…
Harnessing the Freedom of Non-Uniformity in Monostatic ISAC with Antenna Flexibility
Zhe Wang, Mahmoud Zaher, Vitaly Petrov +1
This paper studies flexible non-uniform array design for monostatic integrated sensing and communication (ISAC) systems. An antenna pool is considered at the base station, where ea…
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…
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…
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…
Joint Energy and Latency Optimization in Federated Learning over Cell-Free Massive MIMO Networks
Afsaneh Mahmoudi, Mahmoud Zaher, Emil Björnson
Federated learning (FL) is a distributed learning paradigm wherein users exchange FL models with a server instead of raw datasets, thereby preserving data privacy and reducing comm…
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…
A Bayesian Approach to Characterize Unknown Interference Power in Wireless Networks
Mahmoud Zaher, Emil Björnson, Marina Petrova
The existence of unknown interference is a prevalent problem in wireless communication networks. Especially in multi-user multiple-input multiple-output (MIMO) networks, where a la…
Soft Handover Procedures in mmWave Cell-Free Massive MIMO Networks
Mahmoud Zaher, Emil Björnson, Marina Petrova
This paper considers a mmWave cell-free massive MIMO (multiple-input multiple-output) network composed of a large number of geographically distributed access points (APs) simultane…
Learning-Based Downlink Power Allocation in Cell-Free Massive MIMO Systems
Mahmoud Zaher, Özlem Tuğfe Demir, Emil Björnson +1
This paper considers a cell-free massive multiple-input multiple-output (MIMO) system that consists of a large number of geographically distributed access points (APs) serving mult…