Radio Wave Propagation Studies

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Accurate characterization of Terahertz (THz) band path loss is critical for reliable high-frequency communication, especially in aerial networks where transceivers may operate at different altitudes. Existing THz-band path loss models for aerial networks focus on horizontal or vertical transceiver deployments, and fal…

Accurate characterization of Terahertz (THz) band path loss is critical for reliable high-frequency communication, especially in aerial networks where transceivers may operate at different altitudes. Existing THz-band path loss models for aerial networks focus on horizontal or vertical transceiver deployments, and fal…

Accurate characterization of Terahertz (THz) band path loss is critical for reliable high-frequency communication, especially in aerial networks where transceivers may operate at different altitudes. Existing THz-band path loss models for aerial networks focus on horizontal or vertical transceiver deployments, and fal…

The non-terrestrial network (NTN) architecture has gained significant interest from the academia owing to its versatility and the ability to provide worldwide service. To achieve extremely high data rates in NTNs, as intended in the sixth-generation (6G) communication systems, millimeter wave (mmWave) and terahertz (T…

We develop power allocation strategies for asynchronous visible light positioning (VLP) systems employing LED arrays with the aim of improving localization accuracy. We formulate an optimization problem for minimizing the Cram´ er-Rao lower bound (CRLB) related to the estimation of the receiver location subject to pra…

The integration of visible light positioning (VLP) with multi-color visible light communication (MC-VLC) enables high-precision indoor localization without additional hardware complexity. Recent studies have shown that the blue-shift phenomenon, i.e., the angle-dependent spectral response of interference-type optical…

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Uniform Theory of Diffraction (UTD) is a fast and reliable model used for radio coverage prediction in urban environments. The accurate calculation of the L-parameter within the transition function is critical for ensuring continuity at shadow boundaries in this model. This study investigates the effect of calculating…

• ADEM AVCI
• MEHMET BARIŞ TABAKCIOĞLU
• UĞUR ERBAŞ

The scintillation index as evaluated by the unmodified (classical) Rytov method solution for weak turbulence and evaluated by the modified or the extended Rytov method solution for strong turbulence is compared in different turbulent media, such as non-Kolmogorov atmospheric, non-Kolmogorov jet engine exhaust, marine…

• YAHYA KEMAL BAYKAL

In this letter, we evaluate the impact of beam misalignment (BM) fading on Terahertz (THz) drone communications by deriving simple novel closed-form expressions for the outage probability and average bit error rate (BER). Additionally, we present a high signal-to-noise ratio (SNR) regime analysis, resulting in the div…