376 citations · 4.1k across the 391 of their papers we have counts for
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Large System Analysis for Amplify & Forward SIMO Multiple Access Channel with Ill-conditioned Second Hop
Symeon Chatzinotas
Relaying has been extensively studied during the last decades and has found numerous applications in wireless communications. The simplest relaying method, namely amplify and forwa…
Constructive Multiuser Interference in Symbol Level Precoding for the MISO Downlink Channel
Maha Alodeh, Symeon Chatzinotas, Björn Ottersten
This paper investigates the problem of interference among the simultaneous multiuser transmissions in the downlink of multiple antennas systems. Using symbol level precoding, a new…
Sum Rate Maximizing Multigroup Multicast Beamforming under Per-antenna Power Constraints
Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten
A multi-antenna transmitter that conveys independent sets of common data to distinct groups of users is herein considered, a model known as physical layer multicasting to multiple…
Multicast Multigroup Beamforming under Per-antenna Power Constraints
Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten
Linear precoding exploits the spatial degrees of freedom offered by multi-antenna transmitters to serve multiple users over the same frequency resources. The present work focuses o…
Weighted Fair Multicast Multigroup Beamforming under Per-antenna Power Constraints
Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten
A multi-antenna transmitter that conveys independent sets of common data to distinct groups of users is considered. This model is known as physical layer multicasting to multiple c…
Multicast Multigroup Precoding and User Scheduling for Frame-Based Satellite Communications
Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten
The present work focuses on the forward link of a broadband multibeam satellite system that aggressively reuses the user link frequency resources. Two fundamental practical challen…