Md Saheed Ullah
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View article: Coherently distributed RF antenna arrays using photonic links
Coherently distributed RF antenna arrays using photonic links Open
This paper uses radio-frequency-over-fiber (RFoF), or RF-photonic links, to implement a remotely distributed antenna system that preserves both the spatial and temporal coherence of RF signals, over long distances with negligible propagati…
View article: Monolithically integrated ultra-wideband photonic receiver on thin film lithium niobate
Monolithically integrated ultra-wideband photonic receiver on thin film lithium niobate Open
As the demand for data capacity in wireless networks and mobile communications continues to grow, they are moving toward higher carrier frequencies and wider modulation bandwidths. Unfortunately, electronic device performance degrades in a…
View article: BIRC: Beamspace Interference Rejection With Beam Selection for Uplink Massive-MIMO at mmWave
BIRC: Beamspace Interference Rejection With Beam Selection for Uplink Massive-MIMO at mmWave Open
Modern wireless networks face increasingly complex radio propagation environments and electromagnetic congestion, motivating the use of ultra-large-scale phased arrays to enhance coverage and robustness via diverse beam configurations. How…
View article: Performance Analysis of 6G Multiuser Massive MIMO-OFDM THz Wireless Systems with Hybrid Beamforming under Intercarrier Interference
Performance Analysis of 6G Multiuser Massive MIMO-OFDM THz Wireless Systems with Hybrid Beamforming under Intercarrier Interference Open
6G networks are expected to provide more diverse capabilities than their predecessors and are likely to support applications beyond current mobile applications, such as virtual and augmented reality (VR/AR), AI, and the Internet of Things …
View article: Self-supervised Contrastive Learning for 6G UM-MIMO THz Communications: Improving Robustness Under Imperfect CSI
Self-supervised Contrastive Learning for 6G UM-MIMO THz Communications: Improving Robustness Under Imperfect CSI Open
This paper investigates the potential of contrastive learning in 6G ultra-massive multiple-input multiple-output (UM-MIMO) communication systems, specifically focusing on hybrid beamforming under imperfect channel state information (CSI) c…
View article: A Fast Effective Greedy Approach for MU-MIMO Beam Selection in mm-Wave and THz Communications
A Fast Effective Greedy Approach for MU-MIMO Beam Selection in mm-Wave and THz Communications Open
This paper addresses the beam-selection challenges in Multi-User Multiple Input Multiple Output (MU-MIMO) beamforming for mm-wave and THz channels, focusing on the pivotal aspect of spectral efficiency (SE) and computational efficiency. We…
View article: Beyond Traditional Beamforming: Singular Vector Projection for MU-MIMO
Beyond Traditional Beamforming: Singular Vector Projection for MU-MIMO Open
This letter introduces a low-complexity beamforming approach for MU-MIMO systems with multiple data streams per user, minimizing inter-user interference and improving spectral efficiency (SE). The Interference-Optimized Singular Vector Bea…
View article: A CNN based multifaceted signal processing framework for heart rate proctoring using Millimeter wave radar ballistocardiography
A CNN based multifaceted signal processing framework for heart rate proctoring using Millimeter wave radar ballistocardiography Open
The recent pandemic has refocused the medical world’s attention on the diagnostic techniques associated with cardiovascular disease. Heart rate provides a real-time snapshot of cardiovascular health. A more precise heart rate reading enabl…
View article: A CNN based Multifaceted Signal Processing Framework for Heart Rate Proctoring Using Millimeter Wave Radar Ballistocardiography
A CNN based Multifaceted Signal Processing Framework for Heart Rate Proctoring Using Millimeter Wave Radar Ballistocardiography Open
The recent pandemic has refocused the medical world's attention on the diagnostic techniques associated with cardiovascular disease. Heart rate provides a real-time snapshot of cardiovascular health. A more precise heart rate reading provi…
View article: SymSwarm: A Two-Staged Decentralized Symmetrical Pattern Formation Paradigm for a Swarm of Mobile Robots
SymSwarm: A Two-Staged Decentralized Symmetrical Pattern Formation Paradigm for a Swarm of Mobile Robots Open
For several decades, cooperative control of autonomous mobile robots has been an active research area with potential applications in dynamic areas such as agriculture, industrial plants, and the military. Although numerous research studies…