Research Associates
Krishan Kumar Tiwari
Contact
- tiwari@tu-berlin.de
- Phone
- —
- Office
- HFT
- Affiliation
- —
Profile
- Research interests
- —
- ORCID
- 0000-0001-5986-2121
- Google Scholar
- —
- Personal website
- —
- TU Berlin vCard
- tu.berlin/vcard
Publications
See all 19 →Artificial Magnetic Conductor Frame to Improve Impedance Matching and Radiation Symmetry in 2$\times$2 Array for 6G Applications
Edoardo Giusti, Krishan Kumar Tiwari, C. J. Reddy, Danilo Brizi, Agostino Monorchio, Giuseppe Caire
ArXiv.org · 2026
Codebook Design and Baseband Precoding for Pragmatic Array-Fed RIS Hybrid Multiuser MIMO
Krishan Kumar Tiwari, Giuseppe Caire
ArXiv.org · 2026
An Efficient, Modular, and Pragmatic Array-Fed RIS Architecture for Multiuser MIMO
Krishan Kumar Tiwari, Giuseppe Caire
IEEE Trans. Wirel. Commun. · 2026
Artificial Magnetic Conductor Frame to Improve Impedance Matching and Radiation Symmetry in 2\unicode107612 Array for 6G Applications
Edoardo Giusti, Krishan Kumar Tiwari, C. J. Reddy, Danilo Brizi, Agostino Monorchio, Giuseppe Caire
CoRR · 2026
Array-Fed RIS: Validation of Friis-Based Modeling Using Full-Wave Simulations
Krishan Kumar Tiwari, Thomas Flisgen, W. Heinrich, G. Caire
ArXiv.org · 2025
Flat-Top Beamforming with Efficient Array-Fed RIS
Krishan Kumar Tiwari, Giuseppe Caire
ArXiv.org · 2025
A Modular Pragmatic Architecture for Multiuser MIMO with Array-Fed RIS
Krishan Kumar Tiwari, Giuseppe Caire
arXiv (Cornell University) · 2024
Power Transfer between Two Antenna Arrays in the Near Field
Krishan Kumar Tiwari, G. Caire
99th IEEE Vehicular Technology Conference, VTC Spring 2024, Singapore, June 24-27, 2024 · 2024· 4 citations
RIS-Based Steerable Beamforming Antenna with Near-Field Eigenmode Feeder
Krishan Kumar Tiwari, Giuseppe Caire
2023
A New Old Idea: Beam-Steering Reflectarrays for Efficient Sub-THz Multiuser MIMO
Krishan Kumar Tiwari, Giuseppe Caire
CoRR · 2023
Power Transfer between Two Antenna Arrays in the Near Field
Krishan Kumar Tiwari, Giuseppe Caire
IEEE Vehicular Technology Conference · 2023
On the Behavior of the Near-Field Propagation Matrix between two Antenna Arrays, with Applications to RIS-Based Over-the-Air Beamforming
Krishan Kumar Tiwari, Giuseppe Caire
2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring) · 2022· 6 citations
Rate Loss due to Beam Cusping in Grid of Beams
Krishan Kumar Tiwari, Giuseppe Caire
2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall) · 2022· 2 citations
RIS-Based Steerable Beamforming Antenna with Near-Field Eigenmode Feeder
Krishan Kumar Tiwari, Giuseppe Caire
arXiv (Cornell University) · 2022
MAC Layer Beamforming: Rate Loss due to Beam Cusping
Krishan Kumar Tiwari, David Laurenson, Eckhard Grass, John Thompson, Ivan Ndip, Michael Kaiser
2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall) · 2021· 4 citations
Noise Performance of Orthogonal RF Beamforming for THz Radio Communications
Krishan Kumar Tiwari, Eckhard Grass, Rolf Kraemer
2019· 6 citations
Beam Entropy of 5G Cellular Millimetre-Wave Channels
Krishan Kumar Tiwari, Eckhard Grass, John Thompson, Rolf Kraemer
2019· 3 citations
Monopulse-based THz Beam Tracking for Indoor Virtual Reality Applications
Krishan Kumar Tiwari, Vladica Sark, Eckhard Grass, Rolf Kraemer
arXiv (Cornell University) · 2019· 1 citations
Noise Performance of Orthogonal RF Beamforming for Millimetre Wave Massive MIMO Communication Systems
Krishan Kumar Tiwari, John Thompson, Eckhard Grass
2018· 4 citations