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🔍 ranjan kumar 📂 Engineering 📄 Preprint
Showing 78 results for "ranjan kumar" in Engineering · Preprint
Engineering Preprint PDF DOI

Photogrammetry-Reconstructed 3D Head Meshes for Accessible Individual Head-Related Transfer Functions

Ludovic Pirard, Lorenzo Picinali, Katarina C. Poole · 2026

Individual head-related transfer functions (HRTFs) are essential for accurate spatial audio binaural rendering but remain difficult to obtain due to measurement complexity. This study investigates whe…

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Engineering Preprint PDF DOI

RamanSeg: Interpretability-driven Deep Learning on Raman Spectra for Cancer Diagnosis

Chris Tomy, Mo Vali, David Pertzborn, Tammam Alamatouri, Anna Muhlig, Orlando Guntinas-Lichius, Anna Xylander, Eric Michele Fantuzzi, Matteo Negro, Francesco Crisafi, Pietro Lio, Tiago Azevedo · 2026

Histopathology, the current gold standard for cancer diagnosis, involves the manual examination of tissue samples after chemical staining, a time-consuming process requiring expert analysis. Raman spe…

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Engineering Preprint PDF DOI

CT-CFAR A Robust CFAR Detector Based on CLEAN and Truncated Statistics in Sidelobe-Contaminated Environments

Jiachen Zhu, Fangjiong Chen, Jie Wu, Ming Xia · 2025

This paper proposes a constant false alarm rate (CFAR) target detection algorithm based on the CLEAN concept and truncated statistics to mitigate the non-homogeneity of reference samples caused by sid…

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Engineering Preprint PDF DOI

Transfer Learning-Enabled Efficient Raman Pump Tuning under Dynamic Launch Power for C+L Band Transmission

Jiaming Liu, Rui Wang, JinJiang Li, Hong Lin, Jing Zhang, Kun Qiu · 2025

We propose a transfer learning-enabled Transformer framework to simultaneously realize accurate modeling and Raman pump design in C+L-band systems. The RMSE for modeling and peak-to-peak GSNR variatio…

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Engineering Preprint PDF DOI

Enhancing Photogrammetry Reconstruction For HRTF Synthesis Via A Graph Neural Network

Ludovic Pirard, Katarina C. Poole, Lorenzo Picinali · 2025

Traditional Head-Related Transfer Functions (HRTFs) acquisition methods rely on specialised equipment and acoustic expertise, posing accessibility challenges. Alternatively, high-resolution 3D modelli…

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Engineering Preprint PDF DOI

Fundamental Limits of THz Inter-Satellite ISAC Under Hardware Impairments

Haofan Dong, Ozgur B. Akan · 2025

This paper establishes a theoretical framework for analyzing the fundamental performance limits of terahertz (THz) Low Earth Orbit (LEO) inter-satellite link (ISL) Integrated Sensing and Communication…

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Engineering Preprint PDF DOI

A General Nonlinear Model for Arbitrary Modulation Formats in the Presence of Inter-Channel Simulated Raman Scattering

Zhiwei Liang, Bin Chen, Jiwei Xu, Yi Lei, Qingqing Hu, Fan Zhang, Gabriele Liga · 2025

The four-dimensional nonlinear model is extended to include the inter-channel stimulated Raman scattering, enabling accurate prediction of dual-polarization four-dimensional modulation formats and pro…

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Engineering Preprint PDF DOI

Closed-form Expression for the Power Profile in Wideband Systems with Inter-channel Stimulated Raman Scattering

Lucas Alves Zischler, Chiara Lasagni, Paolo Serena, Alberto Bononi, Giammarco Di Sciullo, Divya A. Shaji, Antonio Mecozzi, Cristian Antonelli · 2025

Wideband systems experience significant inter-channel stimulated Raman scattering (ISRS) and channel-dependent losses. Due to the non-uniform attenuation profile, the combined effects of ISRS and fibe…

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Engineering Preprint PDF DOI

PixCell: A generative foundation model for digital histopathology images

Srikar Yellapragada, Alexandros Graikos, Zilinghan Li, Kostas Triaridis, Varun Belagali, Tarak Nath Nandi, Karen Bai, Beatrice S. Knudsen, Tahsin Kurc, Rajarsi R. Gupta, Prateek Prasanna, Ravi K Madduri, Joel Saltz, Dimitris Samaras · 2025

The digitization of histology slides has revolutionized pathology, providing massive datasets for cancer diagnosis and research. Self-supervised and vision-language models have been shown to effective…

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Engineering Preprint PDF DOI

A Self-supervised Learning Method for Raman Spectroscopy based on Masked Autoencoders

Pengju Ren, Ri-gui Zhou, Yaochong Li · 2025

Raman spectroscopy serves as a powerful and reliable tool for analyzing the chemical information of substances. The integration of Raman spectroscopy with deep learning methods enables rapid qualitati…

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Engineering Preprint PDF DOI

Signal and Backward Raman Pump Power Optimization in Multi-Band Systems Using Fast Power Profile Estimation

Yanchao Jiang, Jad Sarkis, Stefano Piciaccia, Fabrizio Forghieri, Pierluigi Poggiolini · 2025

This paper presents an efficient numerical method for calculating spatial power profiles of both signal and pump with significant Interchannel Stimulated Raman Scattering (ISRS) and backward Raman amp…

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Engineering Preprint PDF DOI

EEG-Based Decoding of Sound Location: Comparing Free-Field to Headphone-Based Non-Individual HRTFs

Nils Marggraf-Turley, Martha Shiell, Niels Pontoppidan, Drew Cappotto, Lorenzo Picinali · 2025

Sound source localization relies on spatial cues such as interaural time differences (ITD), interaural level differences (ILD), and monaural spectral cues. Individually measured Head-Related Transfer …

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Engineering Preprint PDF DOI

RG-Attn: Radian Glue Attention for Multi-modality Multi-agent Cooperative Perception

Lantao Li, Kang Yang, Wenqi Zhang, Xiaoxue Wang, Chen Sun · 2025

Cooperative perception enhances autonomous driving by leveraging Vehicle-to-Everything (V2X) communication for multi-agent sensor fusion. However, most existing methods rely on single-modal data shari…

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Engineering Preprint PDF DOI

Self-Calibrated Dual Contrasting for Annotation-Efficient Bacteria Raman Spectroscopy Clustering and Classification

Haiming Yao, Wei Luo, Tao Zhou, Ang Gao, Xue Wang · 2024

Raman scattering is based on molecular vibration spectroscopy and provides a powerful technology for pathogenic bacteria diagnosis using the unique molecular fingerprint information of a substance. Th…

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Engineering Preprint PDF DOI

Adversarial Contrastive Domain-Generative Learning for Bacteria Raman Spectrum Joint Denoising and Cross-Domain Identification

Haiming Yao, Wei Luo, Xue Wang · 2024

Raman spectroscopy, as a label-free detection technology, has been widely utilized in the clinical diagnosis of pathogenic bacteria. However, Raman signals are naturally weak and sensitive to the cond…

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Engineering Preprint PDF DOI

Performance Assessment of Lidar Odometry Frameworks: A Case Study at the Australian Botanic Garden Mount Annan

Mohamed Mourad Ouazghire, Julie Stephany Berrio, Mao Shan, Stewart Worrall · 2024

Autonomous vehicles are being tested in diverse environments worldwide. However, a notable gap exists in evaluating datasets representing natural, unstructured environments such as forests or gardens.…

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Engineering Preprint PDF DOI

An Algorithm to Speed up the Spatial Power Profile Calculation in Backward Raman Amplified Systems

Jad Sarkis, Yanchao Jiang, Pierluigi Poggiolini · 2024

As data transmission demands grow, long-haul optical transmission links face increasing pressure to increase their throughput. Expanding usable bandwidth through Ultra-Wide Band (UWB) systems has beco…

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Engineering Preprint PDF DOI

Memory-Efficient Training for Text-Dependent SV with Independent Pre-trained Models

Seyed Ali Farokh, Hossein Zeinali · 2024

This paper presents our submission to the Iranian division of the Text-Dependent Speaker Verification Challenge (TdSV) 2024. Conventional TdSV approaches typically jointly model speaker and linguistic…

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Engineering Preprint PDF DOI

Experimental validation of the closed-form GN model accounting for distributed Raman amplification in an S+C+L-band hybrid amplified long-haul transmission system

Jiaqian Yang, Henrique Buglia, Eric Sillekens, Mingming Tan, Pratim Hazarika, Dini Pratiwi, Ronit Sohanpal, Mindaugas Jarmolovicius, Romulo Aparecido, Ralf Stolte, Wladek Forysiak, Polina Bayvel, Robert I. Killey · 2024

The accuracy of a recently-developed closed-form GN nonlinear interference model is evaluated in experimental 1065 km S+C+L band WDM transmission with backward Raman pumping. The model accurately esti…

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Engineering Preprint PDF DOI

Closed-Form EGN Model with Comprehensive Raman Support

Yanchao Jiang, Antonino Nespola, Stefano Straullu, Alberto Tanzi, Stefano Piciaccia, Fabrizio Forghieri, Dario Pilori, Pierluigi Poggiolini · 2024

We present a series of experiments testing the accuracy of a new closed-form multiband EGN model, carried out over a full-Raman 9-span C+L link. Transmission regimes ranged from linear to strongly non…

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