Vishnu Unnikrishnan

Publication Activity (10 Years)

Years Active: 2014-2024
Publications (10 Years): 50

Top Topics

Top Venues

Publications

Vishnu Unnikrishnan, Clara Puga, Miro Schleicher, Uli Niemann, Berthold Langguth, Stefan Schoisswohl, Birgit Mazurek, Rilana Cima, Jose Antonio Lopez-Escamez, Dimitrios Kikidis, Eleftheria Vellidou, Rüdiger Pryss, Winfried Schlee, Myra Spiliopoulou
Training and Validating a Treatment Recommender with Partial Verification Evidence. CoRR (2024)
Guixian Xu, Vesa Lampu, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynänen, Mikko Valkama, Lauri Anttila
Digital Polar Transmitters for Massive MIMO: Sum-Rate and Power Efficiency Analysis. IEEE Trans. Wirel. Commun. 23 (1) (2024)
Agnimesh Ghosh, Andrei Spelman, Tze Hin Cheung, Dhanashree Boopathy, Kari Stadius, Manil Dev Gomony, Mikko Valkama, Jussi Ryynänen, Marko Kosunen, Vishnu Unnikrishnan
Reconfigurable Signal Processing and DSP Hardware Generator for 5G and Beyond Transmitters. IEEE Trans. Very Large Scale Integr. Syst. 32 (1) (2024)
Vesa Lampu, Guixian Xu, Alberto Brihuega, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynänen, Christian Fager, Mikko Valkama, Lauri Anttila
Multilevel Outphasing With Over-the-Air Combining in Large Antenna Arrays. IEEE Trans. Commun. 71 (12) (2023)
Miro Schleicher, Vishnu Unnikrishnan, Rüdiger Pryss, Johannes Schobel, Winfried Schlee, Myra Spiliopoulou
Prediction meets time series with gaps: User clusters with specific usage behavior patterns. Artif. Intell. Medicine 142 (2023)
Dhanashree Boopathy, Tze Hin Cheung, Andrei Spelman, Agnimesh Ghosh, Vesa Lampu, Lauri Anttila, Kari Stadius, Marko Kosunen, Jussi Ryynänen, Vishnu Unnikrishnan
High-Precision Time-to-Digital Conversion for Calibration of Outphasing Radio Transmitters. NEWCAS (2023)
Vishnu Unnikrishnan, Miro Schleicher, Clara Puga, Rüdiger Pryss, Carsten Vogel, Winfried Schlee, Myra Spiliopoulou
A Similarity-Guided Framework for Error-Driven Discovery of Patient Neighbourhoods in EMA Data. IDA (2023)
Anna Kleinau, Simon Flügel, Rüdiger Pryss, Carsten Vogel, Milena Engelke, Winfried Schlee, Vishnu Unnikrishnan, Myra Spiliopoulou
Predicting Patient-Based Time-Dependent Mobile Health Data. CBMS (2023)
Noor Jamaludeen, Vishnu Unnikrishnan, André Brechmann, Myra Spiliopoulou
Discovering Instantaneous Granger Causalities in Non-stationary Categorical Time Series Data. AIME (2022)
Okko Järvinen, Vishnu Unnikrishnan, Ilia Kempi, Kari Stadius, Marko Kosunen, Jussi Ryynänen
Design of Cyclic-Coupled Ring Oscillators with Guaranteed Maximal Phase Resolution. ISCAS (2022)
Okko Järvinen, Vishnu Unnikrishnan, Ilia Kempi, Santeri Porrasmaa, Kari Stadius, Marko Kosunen, Jussi Ryynänen
Energy-Efficient Cyclic-Coupled Ring Oscillator With Delay-Based Injection Locking. IEEE Trans. Circuits Syst. II Express Briefs 69 (9) (2022)
Miikka Tenhunen, Kalle Spoof, Vishnu Unnikrishnan, Kari Stadius, Marko Kosunen, Jussi Ryynänen
A 2 GS/s 9-bit Time-Interleaved SAR ADC with Overlapping Conversion Steps. NEWCAS (2022)
Kalle Spoof, Miikka Tenhunen, Vishnu Unnikrishnan, Kari Stadius, Marko Kosunen, Jussi Ryynänen
True-Time-Delay Receiver IC With Reconfigurable Analog and Digital Beamforming. IEEE Access 10 (2022)
Kalle Spoof, Miikka Tenhunen, Vishnu Unnikrishnan, Kari Stadius, Marko Kosunen, Jussi Ryynänen
A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End. ICECS 2022 (2022)
Ilia Kempi, Okko Järvinen, Marko Kosunen, Vishnu Unnikrishnan, Kari Stadius, Jussi Ryynänen
A 0.9-Nyquist-Band Digital Timing Mismatch Correction for Time-Interleaved ADCs Achieving Delay Tuning Range of 0.12-Sample-Period. ISCAS (2022)
Agnimesh Ghosh, Andrei Spelman, Tze Hin Cheung, Dhanashree Boopathy, Vishnu Unnikrishnan, Vesa Lampu, Guixian Xu, Lauri Anttila, Kari Stadius, Marko Kosunen, Jussi Ryynänen
Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters. NorCAS (2022)
Subash Prakash, Vishnu Unnikrishnan, Rüdiger Pryss, Robin Kraft, Johannes Schobel, Ronny Hannemann, Berthold Langguth, Winfried Schlee, Myra Spiliopoulou
Interactive System for Similarity-Based Inspection and Assessment of the Well-Being of mHealth Users. Entropy 23 (12) (2021)
Noor Jamaludeen, Vishnu Unnikrishnan, Rüdiger Pryss, Johannes Schobel, Winfried Schlee, Myra Spiliopoulou
Circadian Conditional Granger Causalities on Ecological Momentary Assessment Data from an mHealth App. CBMS (2021)
Vishnu Unnikrishnan, Okko Järvinen, Waqas Siddiqui, Kari Stadius, Marko Kosunen, Jussi Ryynänen
Data Conversion With Subgate-Delay Time Resolution Using Cyclic-Coupled Ring Oscillators. IEEE Trans. Very Large Scale Integr. Syst. 29 (1) (2021)
Saijal Shahania, Vishnu Unnikrishnan, Rüdiger Pryss, Robin Kraft, Johannes Schobel, Ronny Hannemann, Winny Schlee, Myra Spiliopoulou
User-centric vs whole-stream learning for EMA prediction. CBMS (2021)
Vishnu Unnikrishnan, Yash Shah, Miro Schleicher, Carlos Fernández-Viadero, Mirela Strandzheva, Doroteya Velikova, Plamen Dimitrov, Rüdiger Pryss, Johannes Schobel, Winfried Schlee, Myra Spiliopoulou
Love thy Neighbours: A Framework for Error-Driven Discovery of Useful Neighbourhoods for One-Step Forecasts on EMA data. CBMS (2021)
Clara Puga, Uli Niemann, Vishnu Unnikrishnan, Miro Schleicher, Winfried Schlee, Myra Spiliopoulou
Discovery of Patient Phenotypes through Multi-layer Network Analysis on the Example of Tinnitus. DSAA (2021)
Okko Järvinen, Vishnu Unnikrishnan, Waqas Siddiqui, Teuvo Korhonen, Kimmo Koli, Kari Stadius, Marko Kosunen, Jussi Ryynänen
A 100-750 MS/s 11-Bit Time-to-Digital Converter With Cyclic-Coupled Ring Oscillator. IEEE Access 9 (2021)
Vesa Lampu, Guixian Xu, Lauri Anttila, Alberto Brihuega, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynänen, Mikko Valkama
Energy-Efficient Array Transmitters Through Outphasing and Over-the-Air Combining. ACSCC (2021)
Ilia Kempi, Nouman Ahmed, Andreas Hammer, Olaitan Olabode, Vishnu Unnikrishnan, Marko Kosunen, Jussi Ryynänen
Resilient flow control for wireless data streaming in inductively coupled medical implants. Microprocess. Microsystems 72 (2020)
Vishnu Unnikrishnan, Christian Beyer, Pawel Matuszyk, Uli Niemann, Rüdiger Pryss, Winfried Schlee, Eirini Ntoutsi, Myra Spiliopoulou
Entity-level stream classification: exploiting entity similarity to label the future observations referring to an entity. Int. J. Data Sci. Anal. 9 (1) (2020)
Olaitan Olabode, Marko Kosunen, Vishnu Unnikrishnan, Tommi Palomäki, Tomi Laurila, Kari Halonen, Jussi Ryynänen
Time-Based Sensor Interface for Dopamine Detection. IEEE Trans. Circuits Syst. (10) (2020)
Vishnu Unnikrishnan, Yash Shah, Miro Schleicher, Mirela Strandzheva, Plamen Dimitrov, Doroteya Velikova, Rüdiger Pryss, Johannes Schobel, Winfried Schlee, Myra Spiliopoulou
Predicting the Health Condition of mHealth App Users with Large Differences in the Number of Recorded Observations - Where to Learn from? DS (2020)
Vishnu Unnikrishnan, Okko Järvinen, Kari Stadius, Marko Kosunen, Jussi Ryynänen
Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation. ISCAS (2020)
Christian Beyer, Vishnu Unnikrishnan, Robert Brüggemann, Vincent Toulouse, Hafez Kader Omar, Eirini Ntoutsi, Myra Spiliopoulou
Resource management for model learning at entity level. Ann. des Télécommunications 75 (9-10) (2020)
Christian Beyer, Maik Büttner, Vishnu Unnikrishnan, Miro Schleicher, Eirini Ntoutsi, Myra Spiliopoulou
Active feature acquisition on data streams under feature drift. Ann. des Télécommunications 75 (9-10) (2020)
Neetha Jambigi, Tirtha Chanda, Vishnu Unnikrishnan, Myra Spiliopoulou
Assessing the Difficulty of Labelling an Instance in Crowdworking. PKDD/ECML Workshops (2020)
Kalle Spoof, Vishnu Unnikrishnan, Mahwish Zahra, Kari Stadius, Marko Kosunen, Jussi Ryynänen
True-Time-Delay Beamforming Receiver With RF Re-Sampling. IEEE Trans. Circuits Syst. (12) (2020)
Abdullah Al Safi, Christian Beyer, Vishnu Unnikrishnan, Myra Spiliopoulou
Multivariate Time Series as Images: Imputation Using Convolutional Denoising Autoencoder. IDA (2020)
Christian Beyer, Vishnu Unnikrishnan, Uli Niemann, Pawel Matuszyk, Eirini Ntoutsi, Myra Spiliopoulou
Exploiting entity information for stream classification over a stream of reviews. SAC (2019)
Yury Antonov, Mikko Valkama, Marko Kosunen, Jussi Ryynänen, Mahwish Zahra, Kari Stadius, Zahra Khonsari, Ilia Kempi, Toni Miilunpalo, Juha Inkinen, Vishnu Unnikrishnan, Lauri Anttila
A Delay-Based LO Phase-Shifting Generator for a 2-5GHz Beamsteering Receiver in 28nm CMOS. ESSCIRC (2019)
Olaitan Olabode, Marko Kosunen, Vishnu Unnikrishnan, Tommi Palomäki, Tomi Laurila, Kari Halonen, Jussi Ryynänen
A Sensor Interface for Neurochemical Signal Acquisition. MWSCAS (2019)
Noor Jamaludeen, Vishnu Unnikrishnan, Maya S. Sekeran, Majed Ali, Le Anh Trang, Myra Spiliopoulou
Assessing the Reliability of Crowdsourced Labels via Twitter. LWDA (2019)
Yury Antonov, Mahwish Zahra, Kari Stadius, Zahra Khonsari, Nouman Ahmed, Ilia Kempi, Juha Inkinen, Vishnu Unnikrishnan, Jussi Ryynänen
A 3-43ps time-delay cell for LO phase-shifting in 1.5-6.5GHz beamsteering receiver. NEWCAS (2018)
Ilia Kempi, Nouman Ahmed, Andreas Hammer, Olaitan Olabode, Vishnu Unnikrishnan, Marko Kosunen, Jussi Ryynänen
A Low-Power Hardware Stack for Continuous Data Streaming from Telemetry Implants. NORCAS (2018)
Christian Beyer, Vishnu Unnikrishnan, Pawel Matuszyk, Uli Niemann, Rüdiger Pryss, Winfried Schlee, Eirini Ntoutsi, Myra Spiliopoulou
Entity-Level Stream Classification: Exploiting Entity Similarity to Label the Future Observations Referring to an Entity. DSAA (2018)
Christian Beyer, Uli Niemann, Vishnu Unnikrishnan, Eirini Ntoutsi, Myra Spiliopoulou
Predicting polarities of entity-centered documents without reading their contents. SAC (2018)
Olaitan Olabode, Vishnu Unnikrishnan, Ilia Kempi, Andreas Hammer, Marko Kosunen, Jussi Ryynänen
A Configurable Hysteresis Comparator for Asynchronous Sigma-Delta Modulators. NORCAS (2018)
Olaitan Olabode, Antti Ontronen, Vishnu Unnikrishnan, Marko Kosunen, Jussi Ryynänen
A VCO-based ADC with Relaxation Oscillator for Biomedical Applications. ICECS (2018)
Mark Vesterbacka, Vishnu Unnikrishnan
Ring Counters as Phase Accumulator in VCO-Based ADCs. ICECS (2018)
Vishnu Unnikrishnan, Mark Vesterbacka
Mitigation of Sampling Errors in VCO-Based ADCs. IEEE Trans. Circuits Syst. I Regul. Pap. (7) (2017)
Vishnu Unnikrishnan, Mark Vesterbacka
Mixed-Signal Design Using Digital CAD. ISVLSI (2016)
Vishnu Unnikrishnan, Mark Vesterbacka
Linearization of VCO-based ADCs using asynchronous sigma-delta modulation. MWSCAS (2016)
Vishnu Unnikrishnan, Mark Vesterbacka, Atila Alvandpour
VCO-based ADCs for IoT applications. ISIC (2016)
Vishnu Unnikrishnan, Mark Vesterbacka
Design of a VCO-based ADC in 28 nm CMOS. NORCAS (2016)
Vishnu Unnikrishnan, Srinivasa Rao Pathapati, Mark Vesterbacka
A fully synthesized all-digital VCO-based analog-to-digital converter. NORCAS (2015)
Vishnu Unnikrishnan, Mark Vesterbacka
Linearization of synthesizable VCO-based ADCs using delta modulation. ECCTD (2015)
Vishnu Unnikrishnan, Mark Vesterbacka
A NAND gate based standard cell VCO for use in synthesizable ADCs. NORCAS (2015)
Vishnu Unnikrishnan, Mark Vesterbacka
Time-Mode Analog-to-Digital Conversion Using Standard Cells. IEEE Trans. Circuits Syst. I Regul. Pap. (12) (2014)