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Scopus Author ID: 57188767371

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Employment (1)

Nokia Bell Labs Espoo: Espoo, Uusimaa, FI

Employment
Source: Self-asserted source
Karthik Upadhya

Education and qualifications (2)

Aalto University: Espoo, FI

2014 to 2018 | DSc. (Tech) (Signal Processing and Acoustics)
Education
Source: Self-asserted source
Karthik Upadhya

Indian Institute of Technology Madras: Chennai, Tamil Nadu, IN

2009 to 2011 | Masters in technology (Electrical Engineering)
Education
Source: Self-asserted source
Karthik Upadhya

Works (19)

Jamming Resilient Indoor Factory Deployments: Design and Performance Evaluation

arXiv
2022 | Other
EID:

2-s2.0-85124893241

Part of ISSN: 23318422
Contributors: Chiarello, L.; Baracca, P.; Upadhya, K.; Khosravirad, S.R.; Mandelli, S.; Wild, T.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Extreme Communication in 6G: Vision and Challenges for 'in-X' Subnetworks

IEEE Open Journal of the Communications Society
2021 | Journal article
DOI: 10.1109/OJCOMS.2021.3121530
EID:

2-s2.0-85121390583

Part of ISSN: 2644125X
Contributors: Berardinelli, G.; Baracca, P.; Adeogun, R.O.; Khosravirad, S.R.; Schaich, F.; Upadhya, K.; Li, D.; Tao, T.; Viswanathan, H.; Mogensen, P.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Impact of Pilot Overhead and Channel Estimation on the Performance of Massive MIMO

IEEE Transactions on Communications
2021 | Journal article
DOI: 10.1109/TCOMM.2021.3112213
EID:

2-s2.0-85115125168

Part of ISSN: 15580857 00906778
Contributors: Kocharlakota, A.K.; Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Jamming detection with subcarrier blanking for 5G and beyond in industry 4.0 Scenarios

arXiv
2021 | Other
EID:

2-s2.0-85109603358

Part of ISSN: 23318422
Contributors: Chiarello, L.; Baracca, P.; Upadhya, K.; Khosravirad, S.R.; Wild, T.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Jamming Detection with Subcarrier Blanking for 5G and beyond in Industry 4.0 Scenarios

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
2021 | Conference paper
DOI: 10.1109/PIMRC50174.2021.9569600
EID:

2-s2.0-85118433309
Contributors: Chiarello, L.; Baracca, P.; Upadhya, K.; Khosravirad, S.R.; Wild, T.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Nonlinear Precoding for Quantized Outphasing RF Chains in Massive MIMO Systems

IEEE Vehicular Technology Conference
2021 | Conference paper
DOI: 10.1109/VTC2021-Spring51267.2021.9448980
EID:

2-s2.0-85112454932

Part of ISSN: 15502252
Contributors: Upadhya, K.; Wesemann, S.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

On Achievable Rates for Massive Mimo System with Imperfect Channel Covariance Information

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2019 | Conference paper
DOI: 10.1109/ICASSP.2019.8682163
EID:

2-s2.0-85069000232

Part of ISSN: 15206149
Contributors: Kocharlakota, A.K.; Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

On the spectral efficiency of massive mimo systems with imperfect spatial covariance information

arXiv
2019 | Other
EID:

2-s2.0-85093435708

Part of ISSN: 23318422
Contributors: Kocharlakota, A.K.; Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Covariance matrix estimation for massive MIMO

arXiv
2018 | Other
EID:

2-s2.0-85094549868

Part of ISSN: 23318422
Contributors: Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Covariance matrix estimation for massive MIMO

IEEE Signal Processing Letters
2018 | Journal article
DOI: 10.1109/LSP.2018.2805725
EID:

2-s2.0-85042091950

Part of ISSN: 10709908
Contributors: Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Downlink performance of superimposed pilots in massive MIMO systems

IEEE Transactions on Wireless Communications
2018 | Journal article
DOI: 10.1109/TWC.2018.2861770
EID:

2-s2.0-85051399206

Part of ISSN: 15582248 15361276
Contributors: Upadhya, K.; Vorobyov, S.A.; Vehkapera, M.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Low-Overhead Receiver-Side Channel Tracking for Mmwave Mimo

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2018 | Conference paper
DOI: 10.1109/ICASSP.2018.8461320
EID:

2-s2.0-85054272712

Part of ISSN: 15206149
Contributors: Upadhya, K.; Vorobyov, S.A.; Heath, R.W.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Tracking abruptly changing channels in mmWave systems using overlaid data and training

2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2017
2018 | Conference paper
DOI: 10.1109/CAMSAP.2017.8313188
EID:

2-s2.0-85050739709
Contributors: Upadhya, K.; Heath, R.W.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Downlink performance of superimposed pilots in massive MIMO systems in the presence of pilot contamination

2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Proceedings
2017 | Conference paper
DOI: 10.1109/GlobalSIP.2016.7905925
EID:

2-s2.0-85018516573
Contributors: Upadhya, K.; Vorobyov, S.A.; Vehkapera, M.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Superimposed Pilots Are Superior for Mitigating Pilot Contamination in Massive MIMO

IEEE Transactions on Signal Processing
2017 | Journal article
DOI: 10.1109/TSP.2017.2675859
EID:

2-s2.0-85018492442

Part of ISSN: 1053587X
Contributors: Upadhya, K.; Vorobyov, S.A.; Vehkapera, M.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Time-multiplexed / superimposed pilot selection for massive MIMO pilot decontamination

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2017 | Conference paper
DOI: 10.1109/ICASSP.2017.7952799
EID:

2-s2.0-85023777302

Part of ISSN: 15206149
Contributors: Upadhya, K.; Vorobyov, S.A.; Vehkapera, M.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

A risk minimization framework for channel estimation in OFDM systems

Signal Processing
2016 | Journal article
DOI: 10.1016/j.sigpro.2016.03.012
EID:

2-s2.0-84962786651

Part of ISSN: 01651684
Contributors: Upadhya, K.; Seelamantula, C.S.; Hari, K.V.S.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

Superimposed pilots: An alternative pilot structure to mitigate pilot contamination in massive MIMO

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2016 | Conference paper
DOI: 10.1109/ICASSP.2016.7472301
EID:

2-s2.0-84973326574

Part of ISSN: 15206149
Contributors: Upadhya, K.; Vorobyov, S.A.; Vehkapera, M.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier

An array processing approach to pilot decontamination for massive MIMO

2015 IEEE 6th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2015
2015 | Conference paper
DOI: 10.1109/CAMSAP.2015.7383834
EID:

2-s2.0-84963864612
Contributors: Upadhya, K.; Vorobyov, S.A.
Source: Self-asserted source
Karthik Upadhya via Scopus - Elsevier
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