Appointment: Professor

Research topics:

Development of terahertz, infrared, and optical metamaterial based active and passive plasmonic devices.

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1 to 10 of 79 Results
Dec 2, 2024 - Narendra VISHWAKARMA
Premanand, Rithwik; Vishwakarma, Narendra; Singh, Ranjan; Madhukumar, A. S., 2024, "Related Data for: Multi-IRS Empowered Terahertz Wireless Communication over Generalized Fading", https://doi.org/10.21979/N9/QGSBJZ, DR-NTU (Data), V1
Intelligent reflecting surfaces (IRS) have emerged as a promising technology for addressing the inherent challenges associated with terahertz (THz) bands, thereby enhancing system performance and offering immense potential for future wireless systems. However, existing single and...
Dec 2, 2024 - Narendra VISHWAKARMA
Premanand, Rithwik; Vishwakarma, Narendra; Singh, Ranjan; Madhukumar, A. S., 2024, "Related Data for: Intelligent Reflecting Surfaces-Assisted Hybrid THz/RF System Over Generalized Fading", https://doi.org/10.21979/N9/ZRTSHW, DR-NTU (Data), V1
This paper investigates a novel IRS-assisted hybrid framework that seamlessly combines both THz and radio frequency (RF) technologies using a selection combining (SC) scheme, thereby enhancing system reliability. The study incorporates the deterministic and statistical properties...
Dec 2, 2024 - Narendra VISHWAKARMA
Sharma, Shubha; Ong, Jun Siang; Madhukumar, A. S., 2024, "Related Data for: Secure transmission for MIMO THz communication system", https://doi.org/10.21979/N9/KJKSBN, DR-NTU (Data), V1
This work focuses on achieving security in the terahertz (THz) band using a MIMO wiretap channel. The source employs transmit antenna selection (TAS), while the main user and eavesdropper use maximal ratio combining (MRC) with their respective antennas. Statistical characteristic...
Dec 2, 2024 - Narendra VISHWAKARMA
Shubha, Sharma; Premanand, Rithwik; Vashistha, Ankush; Madhukumar, A. S., 2024, "Related Data for: IRS-assisted access link-based multihop THz communication", https://doi.org/10.21979/N9/N3YMHM, DR-NTU (Data), V1
This paper proposes an amplify-and-forward (AF) multihop terahertz (THz) backhaul communication system integrated with an intelligent reflecting surface (IRS)-assisted access THz link to address challenges in THz environments. The statistical analysis derives the probability dens...
Nov 29, 2024 - Narendra VISHWAKARMA
Premanand, Rithwik; Sharma, Shubha; Vishwakarma, Narendra; Singh, Ranjan; Madhukumar, A. S., 2024, "Related Data for: Intelligent Reflecting Surfaces Empowered TeraHertz Wireless Communication: System Modeling and Performance Analysis", https://doi.org/10.21979/N9/X107KJ, DR-NTU (Data), V1
MATLAB source code the publication title: "Intelligent Reflecting Surfaces Empowered TeraHertz Wireless Communication: System Modeling and Performance Analysis" These code will produce the outage probability, Bit error rate, and ergodic capacity plots for the above paper
Nov 29, 2024 - Narendra VISHWAKARMA
Premanand, Rithwik; Madhukumar, A. S.; Sharma, Shubha; Singh, Ranjan, 2024, "Related Data for: Performance Analysis of IRS-assisted Terahertz Communication System", https://doi.org/10.21979/N9/2A0HND, DR-NTU (Data), V1
In this paper, the performance of an IRS-assisted THz system, with N reflective elements, is systematically analyzed over the deterministic IRS channel gain, the THz path loss model, and the sum of independent and non-identically distributed (i.ni.d.) cascaded α−µ fading channels...
Jun 6, 2024 - MISHRA Sobhan Subhra
Mishra, Sobhan Subhra; Lourembam, James; Lin, Dennis Jing Xiong; Singh, Ranjan, 2024, "Replication Data for: Active ballistic orbital transport in Ni/Pt heterostructure", https://doi.org/10.21979/N9/FUGSDM, DR-NTU (Data), V1, UNF:6:dxyhfqPljbQpsfXuPYVaHg== [fileUNF]
Figure dataset for "Active Ballistic Orbital Transport in Ni/Pt Heterostructure"
May 8, 2024 - Manoj GUPTA
Gupta, Manoj; Singh, Ranjan, 2024, "Replication Data for: 150 Gbps THz Chipscale Topological Photonic Diplexer", https://doi.org/10.21979/N9/NZQTAK, DR-NTU (Data), V1
Photonic diplexers are being widely investigated for high data transfer rates in on-chip communication. However, dividing the available spectrum into non-overlapping multicarrier frequency sub-bands has remained a challenge in designing frequency-selective time-invariant channels...
May 8, 2024 - Manoj GUPTA
Gupta, Manoj; Navaratna, Nikhil; Singh, Ranjan, 2024, "Replication Data for: 327 Gbps THz Silicon Photonic Interconnect with Sub-λ Bends", https://doi.org/10.21979/N9/YL4ACT, DR-NTU (Data), V1, UNF:6:C5QJEfvnPU+qrx9Zz7jezQ== [fileUNF]
Miniaturized photonic devices at the terahertz (THz) band are envisioned to bring significant enhancement to data transfer capacity and integration density for computing and future wireless communications. Broadband silicon waveguiding technology has continuously matured to advan...
May 8, 2024 - Manoj GUPTA
Gupta, Manoj; Kumar, Abhishek; Singh, Ranjan, 2024, "Replication Data for: Electrically Tunable Topological Notch Filter for THz Integrated Photonics", https://doi.org/10.21979/N9/GVCVO0, DR-NTU (Data), V1, UNF:6:fney/f97bT2LRtsFWU7wSg== [fileUNF]
Electromagnetic filtering is essential for emerging integrated photonic technologies and widely adaptable processing of high-bandwidth signals. Conventional electro-optic modulator-based photonic approach for signal filtering at microwave frequencies could not be implemented at t...
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