93 citations · 199 across the 44 of their papers we have counts for
18 papers · 2 filters
Normalized Ambiguity Function Characteristics of OFDM, OTFS, AFDM, and CP-AFDM for ISAC
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu
This paper presents a unified and system-agnostic analysis of the ambiguity function (AF) characteristics of four representative multicarrier waveforms, orthogonal frequency divisi…
The IEEE Signal Processing Society's Leading Role in Developing Standards for Computational Imaging and Sensing: Part II
Andreas Bathelt, Benjamin Deutschmann, Hyeon Seok Rou +3
In every imaging or sensing application, the physical hardware creates constraints that must be overcome or they limit system performance. Techniques that leverage additional degre…
On the Noise Robustness of Affine Frequency Division Multiplexing: Analysis and Applications
Vincent Savaux, Steve Sawadogo, Hyeon Seok Rou +1
This paper investigates the robustness of affine frequency division multiplexing (AFDM) and orthogonal time frequency space (OTFS) modulation schemes against non-white Gaussian noi…
Secrecy-Driven Beamforming for Multi-User Integrated Sensing and Communication
Ali Khandan Boroujeni, Hyeon Seok Rou, Ghazal Bagheri +4
This paper proposes a secure integrated sensing and communications (ISAC) framework for multi-user systems with multiple communication users (CUs) and adversarial targets, where th…
A Secure ISAC Waveform Design Framework via Random Frequency and PRI Agility
Ali Khandan Boroujeni, Hyeon Seok Rou, Ghazal Bagheri +4
This paper presents a novel framework for enhancing the security, data rate, and sensing performance of integrated sensing and communications (ISAC) systems. We employ a random fre…
Affine Filter Bank Modulation (AFBM): A Novel 6G ISAC Waveform with Low PAPR and OOBE
Kuranage Roche Rayan Ranasinghe, Henrique L. Senger, Gustavo P. Gonçalves +4
We propose the affine filter bank modulation (AFBM) waveform for enhanced integrated sensing and communications (ISAC) in sixth generation (6G), designed by drawing on concepts fro…
Doubly-Dispersive Continuous MIMO Systems: Channel Modeling and Beamforming Design
Kuranage Roche Rayan Ranasinghe, Zhaolin Wang, Hyeon Seok Rou +2
We address the modeling and optimal beamforming (BF) design for multiple-input multiple-output (MIMO) continuous aperture array (CAPA) systems operating over doubly-dispersive (DD)…
Reciprocal Beyond-Diagonal Reconfigurable Intelligent Surface (BD-RIS): Scattering Matrix Design via Manifold Optimization
Marko Fidanovski, Iván Alexander Morales Sandoval, Hyeon Seok Rou +2
Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) are emerging as a transformative technology in wireless communications, enabling enhanced performance and quality of s…
Flexible Intelligent Metasurfaces in High-Mobility MIMO Integrated Sensing and Communications
Kuranage Roche Rayan Ranasinghe, Jiancheng An, Iván Alexander Morales Sandoval +4
We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), which is suitable for integrat…
Affine Frequency Division Multiplexing (AFDM) for 6G: Properties, Features, and Challenges
Hyeon Seok Rou, Kuranage Roche Rayan Ranasinghe, Vincent Savaux +3
Affine frequency division multiplexing (AFDM) is an emerging waveform candidate for future sixth generation (6G) systems offering a range of promising features, such as enhanced ro…
Chirp-Permuted AFDM: A Versatile Waveform Design for ISAC in 6G
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu
We present a novel multicarrier waveform, termed chirp-permuted affine frequency division multiplexing (CP-AFDM), which introduces a unique chirp-permutation domain on top of the c…
Quadrature Over-the-Air-Computing for Multimodal Dual-Stream Signal Processing
Hyeon Seok Rou, Kengo Ando, Giuseppe Thadeu Freitas de Abreu +1
We propose a novel quadrature over-the-air computing (Q-OTAC) framework that enables the simultaneously computation of two independent functions and/or data stream within a single…
Metasurfaces-Integrated Doubly-Dispersive MIMO: Channel Modeling and Optimization
Kuranage Roche Rayan Ranasinghe, Hyeon Seok Rou, Iván Alexander Morales Sandoval +2
The doubly-dispersive (DD) channel structure has played a pivotal role in wireless communications, particularly in high-mobility scenarios and integrated sensing and communications…
A Flexible Design Framework for Integrated Communication and Computing Receivers
Kuranage Roche Rayan Ranasinghe, Kengo Ando, Hyeon Seok Rou +4
We propose a framework to design integrated communication and computing (ICC) receivers capable of simultaneously detecting data symbols and performing over-the-air computing (AirC…
Quantum Manifold Optimization: A Design Framework for Future Communications Systems
Getuar Rexhepi, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu
Inspired by recent developments in various areas of science relevant to quantum computing, we introduce quantum manifold optimization (QMO) as a promising framework for solving con…
Blinding the Wiretapper: RIS-Enabled User Occultation in the ISAC Era
Getuar Rexhepi, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu +1
An undesirable consequence of the foreseeable proliferation of sophisticated integrated sensing and communications (ISAC) technologies is the enabling of spoofing, by malicious age…
Chirp-Permuted AFDM for Quantum-Resilient Physical-Layer Secure Communications
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu
We present a novel physical-layer secure communications scheme based on a chirp-permuted variant of the affine frequency division multiplexing (AFDM) waveform recently proposed for…
Doubly-Dispersive MIMO Channels with Stacked Intelligent Metasurfaces: Modeling, Parametrization, and Receiver Design
Kuranage Roche Rayan Ranasinghe, Iván Alexander Morales Sandoval, Hyeon Seok Rou +2
Introduced with the advent of statistical wireless channel models for high mobility communications and having a profound role in communication-centric (CC) integrated sensing and c…