arXiv subjects

Higo T. P. Silva

Publications and source records attributed to Higo T. P. Silva.

4 recordsLinked to original sources

arXiv2026

Cascaded Multiwire-PLC/Multiple-VLC System: Characterization and Performance

This paper proposes a cascaded multiwire-power line communication (PLC)/multiple-visible light communication (VLC) system. This hybrid architecture offers low installation cost, enhanced performance, practical feasibility, and a wide range of applications. Novel analytical expressions are derived for key statistics and outage probability, bit error probability, and ergodic channel capacity metrics. Furthermore, the analytical results are validated through Monte Carlo simulations, with several performance curves presented under various channel and PLC/VLC system parameters. All expressions derived in this work are original and have not been previously published. Our proposed system proves feasible for smart environments, green communication systems, internet of things networks, industrial environments, and next-generation networks.

eess.SP↗

arXiv2026

On the Performance of THz Wireless Systems over $α$-$\mathcal{F}$ Channels with Beam Misalignment, Mobility and Hardware Impairments

This paper investigates the performance of terahertz (THz) wireless systems over the $α$-$\mathcal{F}$ fading channels with beam misalignment, mobility and hardware impairments. New expressions are derived for the probability density, cumulative distribution, and higher-order moments of the instantaneous signal-to-noise ratio (SNR). Building upon the aforementioned expressions, we extract novel formulas for the outage probability (OP), average symbol error probability, and average channel capacity. Asymptotic expressions are also derived, providing useful insights into system performance in the high-SNR regime. Furthermore, an upper bound on the capacity metric is obtained. Monte Carlo simulation results are presented to validate the developed analytical framework.

eess.SP↗

arXiv2025

Slow, Fast and Opportunistic FAMA: A Spatial Block-Correlation Analysis under Nakagami-m Fading Channels

This paper studies slow, fast and opportunistic fluid antenna multiple access (FAMA) under the effect of Nakagami-m fading channels, considering the new and realistic spatial blockcorrelation model. Expressions for the outage probability (OP), based on the signal-to-interference ratio (SIR), are derived for slow FAMA. Interestingly, we provide mathematical relationships that allow the expressions of fast FAMA to be obtained from slow FAMA. Multiplexing gains for an opportunistic FAMA (OFAMA) network are presented for both slow and fast FAMA scenarios. Our analytical results are validated through Monte Carlo simulations, under various channel and system parameters. All expressions derived in this work are original.

math.ST↗

arXiv2025

On the Secrecy Performance of $α$-$\mathcal{F}$ Channels with Pointing Errors

This paper investigates the physical layer security (PLS) performance of $α$-$\mathcal{F}$ fading channels with pointing errors under passive and active eavesdropping scenarios. Novel analytical expressions are derived for key PLS metrics, including the probability of strictly positive secrecy capacity, the average secrecy capacity, and the secure outage probability. An asymptotic analysis is also investigated to provide further insights into the system behavior under high signal-to-noise ratio conditions. The analytical results are validated through Monte Carlo simulations, with several performance curves presented for a range of channel and system parameters. All expressions derived in this work are original and have not been previously published.

cs.IT↗