Karthik Upadhya

Publication Activity (10 Years)

Years Active: 2014-2023
Publications (10 Years): 26

Top Topics

Top Venues

Publications

Andrea Bedin, Akshay Jain, Andrea Zanella, Karthik Upadhya
Heterogeneous Rank Beamforming for Industrial Communications. CoRR (2023)
Andrea Bedin, Dmitry Chizhik, Jinfeng Du, Martti Moisio, Karthik Upadhya, Reinaldo A. Valenzuela, Mikko A. Uusitalo
28 GHz NLOS Channel Measurements Revealing Low Path Loss and High Angular Spread in Container Ports. CoRR (2023)
Karthik Upadhya, Kimmo Valkealahti, Martti Moisio, Dani Korpi, Tero Ihalainen, Mikko A. Uusitalo
Passive Reflectors for Enhancing Cellular UAV Coverage. WCNC (2022)
Leonardo Chiarello, Paolo Baracca, Karthik Upadhya, Saeed R. Khosravirad, Silvio Mandelli, Thorsten Wild
Jamming Resilient Indoor Factory Deployments: Design and Performance Evaluation. WCNC (2022)
Bin Han, Mohammad Asif Habibi, Björn Richerzhagen, Kim Schindhelm, Florian Zeiger, Fabrizio Lamberti, Filippo Gabriele Pratticò, Karthik Upadhya, Charalampos Korovesis, Ioannis-Prodromos Belikaidis, Panagiotis Demestichas, Siyu Yuan, Hans D. Schotten
Digital Twins for Industry 4.0 in the 6G Era. CoRR (2022)
Leonardo Chiarello, Paolo Baracca, Karthik Upadhya, Saeed R. Khosravirad, Silvio Mandelli, Thorsten Wild
Jamming Resilient Indoor Factory Deployments: Design and Performance Evaluation. CoRR (2022)
Leonardo Chiarello, Paolo Baracca, Karthik Upadhya, Saeed R. Khosravirad, Thorsten Wild
Jamming Detection With Subcarrier Blanking for 5G and Beyond in Industry 4.0 Scenarios. CoRR (2021)
Leonardo Chiarello, Paolo Baracca, Karthik Upadhya, Saeed R. Khosravirad, Thorsten Wild
Jamming Detection with Subcarrier Blanking for 5G and Beyond in Industry 4.0 Scenarios. PIMRC (2021)
Atchutaram K. Kocharlakota, Karthik Upadhya, Sergiy A. Vorobyov
Impact of Pilot Overhead and Channel Estimation on the Performance of Massive MIMO. IEEE Trans. Commun. 69 (12) (2021)
Karthik Upadhya, Stefan Wesemann
Nonlinear Precoding for Quantized Outphasing RF Chains in Massive MIMO Systems. VTC Spring (2021)
Gilberto Berardinelli, Paolo Baracca, Ramoni O. Adeogun, Saeed R. Khosravirad, Frank Schaich, Karthik Upadhya, Dong Li, Tao Tao, Harish Viswanathan, Preben E. Mogensen
Extreme Communication in 6G: Vision and Challenges for 'in-X' Subnetworks. IEEE Open J. Commun. Soc. 2 (2021)
Atchutaram K. Kocharlakota, Karthik Upadhya, Sergiy A. Vorobyov
On Achievable Rates for Massive Mimo System with Imperfect Channel Covariance Information. ICASSP (2019)
Atchutaram K. Kocharlakota, Karthik Upadhya, Sergiy A. Vorobyov
On the Spectral Efficiency for Massive MIMO Systems With Imperfect Spacial Covariance Information. CoRR (2019)
Karthik Upadhya, Sergiy A. Vorobyov, Robert W. Heath Jr.
Low-Overhead Receiver-Side Channel Tracking for Mmwave Mimo. ICASSP (2018)
Karthik Upadhya, Sergiy A. Vorobyov
Covariance Matrix Estimation for Massive MIMO. IEEE Signal Process. Lett. 25 (4) (2018)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Downlink Performance of Superimposed Pilots in Massive MIMO Systems. IEEE Trans. Wirel. Commun. 17 (10) (2018)
Karthik Upadhya, Sergiy A. Vorobyov
Covariance Matrix Estimation for Massive MIMO. CoRR (2018)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Superimposed Pilots Are Superior for Mitigating Pilot Contamination in Massive MIMO. IEEE Trans. Signal Process. 65 (11) (2017)
Karthik Upadhya, Robert W. Heath Jr., Sergiy A. Vorobyov
Tracking abruptly changing channels in mmWave systems using overlaid data and training. CAMSAP (2017)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Time-multiplexed / superimposed pilot selection for massive MIMO pilot decontamination. ICASSP (2017)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Superimposed Pilots are Superior for Mitigating Pilot Contamination in Massive MIMO - Part I: Theory and Channel Estimation. CoRR (2016)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Downlink performance of superimposed pilots in massive MIMO systems in the presence of pilot contamination. GlobalSIP (2016)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Superimposed Pilots are Superior for Mitigating Pilot Contamination in Massive MIMO: Part II - Performance Analysis and Hybrid System Design. CoRR (2016)
Karthik Upadhya, Sergiy A. Vorobyov, Mikko Vehkaperä
Superimposed pilots: An alternative pilot structure to mitigate pilot contamination in massive MIMO. ICASSP (2016)
Karthik Upadhya, Chandra Sekhar Seelamantula, K. V. S. Hari
A risk minimization framework for channel estimation in OFDM systems. Signal Process. 128 (2016)
Karthik Upadhya, Sergiy A. Vorobyov
An array processing approach to pilot decontamination for massive MIMO. CAMSAP (2015)
Karthik Upadhya, Chandra Sekhar Seelamantula, K. V. S. Hari
A Risk Minimization Framework for Channel Estimation in OFDM Systems. CoRR (2014)