Author

G. D. de Abreu

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Preprint Oct 2026

Effects of Residual Chirp Rate on DAFT-s-AFDM Uplink Performance

Affine frequency division multiplexing (AFDM) is robust to doubly dispersive channels in high-mobility 6G systems but, like orthogonal frequency division multiplexing (OFDM), suffers from a high peak-to-average power ratio (PAPR). Spreading with a discrete affine Fourier transform (DAFT) yields DAFT-s-AFDM, whose preco...

Henrique L. Senger, Gustavo P. Gonçalves, Bruno S. Chang et al. · 0 citations

Preprint Oct 2026

Comparative Analysis of Filter Bank Waveforms for ISAC Systems: 2D-FFT FB and AFBM

We present a comparative analysis of two promising filter bank multicarrier waveforms for integrated sensing and communications (ISAC) systems operating in high-mobility environments. In particular, we consider two-dimensional FFT-precoded filter bank (2D-FFT FB) modulation and the recently-proposed affine filter bank...

Polianna Basso, Victor Augusto Del Monego, Hyeon Seok Rou et al. · 0 citations

Preprint Sep 2026

Integrated Communication and Computing with Index Modulation

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 computation (AirComp). While IM delivers excellent spectral efficiency by selectively activating a subset of transmit antennas, the unused...

S. Shrestha, K. R. R. Ranasinghe, Hyeon Seok Rou et al. · 0 citations

Preprint Aug 2026

Distortion-Aware Integrated Sensing and Communication with Affine Filter Bank Modulation

The stringent energy-efficiency requirements of future Integrated Sensing and Communications (ISAC) systems are fundamentally challenged. Unlike conventional communication systems, ISAC transmitters must radiate significantly higher power to ensure reliable target detection, forcing the High-Power Amplifier (HPA) to op...

Eya Gourar, Henrique L. Senger, Gustavo P. Gonçalves et al. · 0 citations

Preprint Jul 2026

Bistatic Integrated Sensing and Communications with Flexible Intelligent Metasurfaces

We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), suitable for integrated sensing and communications (ISAC) in high-mobility scenarios. We show how the proposed FIM-parameterized DD (FPDD) channel model extends to multic...

Iván Alexander Morales Sandoval, Thushar Venkataramanaiah, K. R. R. Ranasinghe et al. · 0 citations