Author

Md. Sahabul Alam

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Open access 2026

Correlation-Aware Optimal Antenna Spacing for HAPS Massive MIMO With Uniform Planar Arrays

High-altitude platform stations (HAPS) have received significant attention in recent years due to their inherent advantages, including wide-area line-of-sight connectivity, rapid deployment, and the ability to provide a flexible aerial layer between terrestrial and satellite networks. These characteristics position HAP...

Md. Sahabul Alam · IEEE Access · 0 citations

Oct 2026

Integrated cellular and cell-free augmented architecture: performance evaluation for next-generation wireless networks

In this paper, we propose an Integrated Cellular and Cell-Free Augmented Architecture (ICFC-A) for next-generation wireless networks, designed to enhance coverage, spectral efficiency, and user experience in heterogeneous suburban-urban environments. The architecture integrates traditional macrocellular deployment in u...

Khushnub Anwar, Imtiaz Ahmed, Zoheb Hassan et al. · Optics and Photonics for Inf... · 0 citations

Oct 2026

Extended Kalman filter-based angle-of-arrival estimation for optical inter-satellite tracking

Accurate angle-of-arrival (AOA) estimation is essential for acquisition and tracking in free-space optical (FSO) inter-satellite links operating in low Earth orbit (LEO), where rapid relative motion, sensor noise, and nonlinear spherical geometry complicate real-time beam pointing. This paper presents a causal Extended...

Tyler E. Carter Mills, Md. Sahabul Alam, Mohammad Matin · Optics and Photonics for Inf... · 0 citations