From the 1 of 6 linked papers with an AI index.
4 papers · 1 filter
Assessing Ionospheric Scintillation Risk for Direct-to-Cellular Satellite Communications using Frequency-Scaled GNSS Observations
Abdollah Masoud Darya, Muhammad Mubasshir Shaikh
The paper investigates ionospheric scintillation impacts on Direct‑to‑Cellular satellite links by scaling GNSS L‑band scintillation data to D2C frequencies and validating the resul…
Data-Aided Channel and Doppler Estimation for mMIMO LEO SatComs with Uncompensated Doppler
Abdollah Masoud Darya, Saeed Abdallah
This paper presents a framework for estimating and tracking massive multiple-input multiple-output (mMIMO) low-Earth-orbit (LEO) satellite channels under uncompensated Doppler. The…
EM-Based Channel Estimation for mMIMO LEO SATCOM Under Imperfect Doppler Compensation
Abdollah Masoud Darya, Saeed Abdallah
Massive multiple-input multiple-output low-Earth-orbit communication channels are highly time-varying due to severe Doppler shifts and propagation delays. While satellite-mobility-…
Semi-blind Channel Estimation for Massive MIMO LEO Satellite Communications
Abdollah Masoud Darya, Saeed Abdallah
This letter proposes decision-directed semi-blind channel estimation for massive multiple-input multiple-output low-Earth-orbit satellite communications. Two semi-blind estimators…