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Author

F. A. P. de Figueiredo

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3 papers indexed here

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Open access 2026

A Block Double Proportionate Sign Adaptive Filter: Derivation and Convergence Analysis

This paper proposes the Block Double Proportionate Sign Adaptive Filter (BDP-SAF) for sparse system identification in impulsive noise environments. The algorithm brings three mechanisms that are individually established in the adaptive filtering literature, namely block-level proportionate adaptation, zero-attraction a...

M. Salman, Hadi Zayyani, F. A. P. de Figueiredo et al. · 0 citations
Preprint Aug 2026

Fluid Antenna-Aided Noise Modulation: Spatial Diversity for Variance-Based Wireless Communication

Noise modulation (NoiseMod) encodes information in the \emph{variance} of a transmitted noise-like waveform rather than in its amplitude, phase, or frequency, and is attractive for ultra-low-power and covert links. Its main weakness is that, unlike classical modulation, it exhibits \emph{no} diversity under Rayleigh fa...

Hadi Zayyani, F. A. P. de Figueiredo, Pedro M. R. Pereira et al. · 1 citation
Preprint Aug 2026

Fluid Antenna Multiple Access for Noise Modulation

Noise modulation (NoiseMod) encodes information in the variance of a noise-like waveform. Its noncoherent structure enables low-complexity links, but co-channel users are challenging because interference affects the same variance statistic used for detection. We study fluid antenna multiple access (FAMA) for two-level...

Hadi Zayyani, F. A. P. de Figueiredo · 0 citations

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