62 citations · 86 across the 35 of their papers we have counts for
40 papers
On the State Evolution of Approximate Message Passing with Discontinuous Denoisers
Kuranage Roche Rayan Ranasinghe, Takumi Takahashi, Giuseppe Thadeu Freitas de Abreu
We consider approximate message passing (AMP) with discontinuous denoisers, such as hard slicers, quantizers and hard thresholding, for which the classical state evolution (SE) ana…
Integrated Communication and Computing with Index Modulation
Shreesal Shrestha, Kuranage Roche Rayan Ranasinghe, Hyeon Seok Rou +1
We propose an integrated communication and computing (ICC) architecture that repurposes the inactive antennas of a spatial index modulation (IM) transmitter to perform over-the-air…
Orbital Detection: On Maximum-Entropy Priors
Kuranage Roche Rayan Ranasinghe, Takumi Takahashi, Giuseppe Thadeu Freitas de Abreu
Soft-input detection over a discrete constellation \(\mathcal{M}\) of cardinality \(M\) requires computing a posterior whose mean and mode are respectively given by the minimum mea…
Distortion-Aware Integrated Sensing and Communication with Affine Filter Bank Modulation
Eya Gourar, Henrique L. Senger, Gustavo P. Gonçalves +6
The stringent energy-efficiency requirements of future Integrated Sensing and Communications (ISAC) systems are fundamentally challenged. Unlike conventional communication systems,…
Orbital Detection
Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu
We introduce orbital detection (OD), a framework for designing asymptotically optimal, low-complexity message passing (MP) receivers for digitally modulated multiple-input multiple…
Bistatic Integrated Sensing and Communications with Flexible Intelligent Metasurfaces
Iván Alexander Morales Sandoval, Thushar Venkataramanaiah, Kuranage Roche Rayan Ranasinghe +3
We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), suitable for integrated sensin…
Characterization of Continuous Electromagnetic Manifolds via Calculus of Variations
Kuranage Roche Rayan Ranasinghe, Miguel Rodrigo Castellanos, Giuseppe Thadeu Freitas de Abreu
We present a novel calculus of variations (CoV)-based framework for the characterizing of, and beamforming over, continuous electromagnetic manifolds of arbitrary multiple-input mu…
Joint Synchronization and Radar Parameter Estimation for OFDM-based DISAC Systems
Niclas Führling, Hyeon Seok Rou, Kuranage Roche Rayan Ranasinghe +2
We propose a novel approach to the synchronization paradigm in distributed ISAC (DISAC) systems in doubly-dispersive (DD) channel environments via a joint synchronization and radar…
Learning to Compute on Dirty Paper
Shreesal Shrestha, Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu +1
We propose a fully learning-based approach to integrated communication and computing (ICC) that combines dirty paper coding (DPC) with over-the-air computation. Each user employs a…
On the Robustness of AFBM Sensing to Power Amplifier Nonlinearities
Eya Gourar, Henrique L. Senger, Gustavo P. Gonçalves +6
We investigate the impact of power amplifier (PA) nonlinearities on the sensing performance of affine filter bank modulation (AFBM). While AFBM offers several advantageous properti…
Electromagnetic Signal and Information Theory: A Continuous-Aperture Array Perspective
Zhaolin Wang, Chongjun Ouyang, Kuranage Roche Rayan Ranasinghe +4
Emerging wireless systems are evolving toward larger, denser, higher-frequency, and more reconfigurable apertures, which motivates the study of continuous-aperture arrays (CAPAs).…
A Novel Framework for the Characterization of Continuous Electromagnetic Manifolds
Kuranage Roche Rayan Ranasinghe, Miguel Rodrigo Castellanos, Giuseppe Thadeu Freitas de Abreu
A unified framework for the characterization of continuous electromagnetic (EM) manifolds for arbitrary multipleinput multiple-output (MIMO) system geometries is presented. The EM…
Regularized Approximate Message Passing for Overloaded Discrete Linear Inversion
Shreesal Shrestha, Getuar Rexhepi, Kuranage Roche Rayan Ranasinghe +2
We propose regularized approximate message passing (RAMP), a low-complexity algorithm for discrete signal detection in overloaded multiple-input multiple-output (MIMO) systems wher…
1-bit Quantized Continuous Aperture Arrays
Kuranage Roche Rayan Ranasinghe, Getuar Rexhepi, Zhaolin Wang +1
Continuous aperture arrays (CAPAs) have emerged as a promising physical-layer paradigm for sixth generation (6G) systems, offering spatial degrees of freedom beyond those of conven…
Flexible Continuous Aperture Arrays
Kuranage Roche Rayan Ranasinghe, Zhaolin Wang, Giuseppe Thadeu Freitas de Abreu +1
A novel electromagnetic (EM) structure termed flexible continuous aperture array (FCAPA) is proposed, which incorporates inherent surface flexibility into typical continuous apertu…
Mutual Coupling in Continuous Aperture Arrays: Physical Modeling and Beamforming Design
Zhaolin Wang, Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu +1
The phenomenon of mutual coupling in continuous aperture arrays (CAPAs) is studied. First, a general physical model for the phenomenon that accounts for both polarization and surfa…
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…
Computing on Dirty Paper: Interference-Free Integrated Communication and Computing
Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu, David González G. +1
Inspired by Costa's pioneering work on dirty paper coding (DPC), this paper proposes a novel scheme for integrated communication and computing (ICC), named Computing on Dirty Paper…
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…
Low-Complexity Receiver Design for Multicarrier CAPA-based Systems in Doubly-Dispersive Channels
Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu, Emil Björnson
We propose a novel low-complexity receiver design for multicarrier continuous aperture array (CAPA) systems operating over doubly-dispersive (DD) channels. The receiver leverages a…
Adversarially Robust MIMO Physical Layer Authentication for Non-Stationary Channels
Ali Khandan Boroujeni, Ghazal Bagheri, Kuranage Roche Rayan Ranasinghe +3
We propose an adversarially robust physical layer authentication (AR-PLA) framework tailored for non-stationary multiple-input multiple-output (MIMO) wireless channels. The framewo…
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…
Integrated Communication and Computing in Time-Varying mmWave Channels
Joan Çollaku, Kuranage Roche Rayan Ranasinghe, Giuseppe Thadeu Freitas de Abreu +1
We propose a novel framework for integrated communication and computing (ICC) transceiver design in time-varying millimeter-wave (mmWave) channels. In particular, in order to cope…
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…