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Research interests (selected publications)

RF-based device-free activity recognition	Spontaneous secure device interaction	The RF-channel as a calculator for mathematical functions	Distributed adaptive beamforming
Context prediction	HSDPA resource allocation	Quantum Automata	Gait-based device pairing (pdf)

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2018
CSI location tracking
2017
Device pairing from gait
2016
Ambient assisted Living
2015
Gesture recognition
2014
Attention monitoring
2013
Calculation utilising the RF channel
2012
Spontaneous secure device interaction
2011
Neuron-inspired coll. transmission
2010
Prediction by alignment methods
2009
Beamforming algorithms
2008
Context Prediction Architecture
2007
Minimising the context prediction error
2006
Novel context prediction approach
2004
Quantum automata

Poster (2006-2015; more recent content )

Video ( more recent content )

• SenseWaves: Radiowaves for context recognition, Pervasive 2011

Talks (2011-2015; more recent content )

• Superorganism_Sigg_150907 , Workshop on Collective Adaptation in Very Large Scale Ubicomp: Towards a Superorganism of Wearables
• Exploiting the RF-channel for gesture recognition and mathematical calculations , Johannes Kepler University Linz
• Sensing of environmental stimuli for activity recognition and Secure device pairing, HIIT, University of Helsinki
• RF-based DFAR for wearable devices, Electronics Laboratory, ETH Zurich
• Secure spontaneous device authentication from ambient audio, WWU Muenster
• Harvesting enviornmental stimuli, Osaka Prefecture University
• Device-free activity recognition from the physical layer, Dagstuhl seminar 12492 on Human Activity Recognition
• Device interaction at the physical layer, Seminar at Open University, Milton Keynes
• Feedback based distributed adaptive transmit beamforming, TU Braunschweig, Informatik Kolloquium

Publications (2006-2015; more recent content )

Google Scholar Google Scholar Profile Research Gate

2015

• This list is discontinued. Please visit Google Scholar or my new profile
• Stephan Sigg: Contact-free sensing for collective activity recognition. UbiComp/ISWC Adjunct 2015.
• Stephan Sigg, Kai Kunze, Xiaoming Fu: Recent Advances and Challenges in Ubiquitous Sensing. CoRR abs/1503.04973 (2015)
• Christoph Rauterberg, Mathias Velten, Stephan Sigg, Xiaoming Fu: Simply use the force - Implementation of RF-based gesture interaction on an android phone, IEEE/KuVS NetSys 2015 adjunct proceedings
• J Christoph Rauterberg, Stephan Sigg, Xiaoming Fu: Demo abstract: Use the force, Luke: Implementation of RF-based gesture interaction on an android phone, in IEEE International Conference on Pervasive Computing and Communication Workshops (PerCom Workshops), March 2015 (doi: 10.1109/PERCOMW.2015.7134018)

2014

• Stephan Sigg, Xiaoming Fu: Social Opportunistic Sensing and Social Centric Networking - Enabling technology for Smart Cities, ACM International Workshop on Wireless and Mobile Technologies for Smart Cities (WiMobCity 2014), in conjunction with MobiHoc 2014, Philadelphia, PA, USA, ACM, August 2014.
• Stephan Sigg, Ulf Blanke and Gerhard Troester: The Telepathic Phone: Frictionless Activity Recognition from WiFi-RSSI, IEEE International Conference on Pervasive Computing and Communications (PerCom), Budapest, Hungary, March 24-28, 2014 (Slides, DOI,Slides) [Most downloaded paper of PerCom2014 (according to IEEEXplore Usage statistics)]
• Shuyu Shi, Stephan Sigg, Wei Zhao, and Yusheng Ji: Monitoring of Attention from Ambient FM-radio Signals, IEEE Pervasive Computing, Los Alamitos, CA, USA, IEEE Computer Society, Jan-Mar 2014, vol. 13, no. 1, pp. 30-36, 2014 (DOI)
• Stephan Sigg, Markus Scholz, Shuyu Shi, Yusheng Ji and Michael Beigl: RF-sensing of activities from non-cooperative subjects in device-free recognition systems using ambient and local signals, in IEEE Transactions on Mobile Computing (TMC), Feb. 2014, vol. 13, no. 4 (DOI)
• Jiyin He, Kai Kunze, Christoph Lofi, Sanjay K. Madria and Stephan Sigg: Towards Mobile Sensor-Aware Crowdsourcing: Architecture, Opportunities and Challenges, UnCrowd 2014: DASFAA Workshop on Uncertain and Crowdsourced Data, Bali, Indonesia, April 21, 2014
• Stephan Sigg: A fast binary feedback-based distributed adaptive carrier synchronisation for transmission among clusters of disconnected IoT nodes in smart spaces, Elsevier Journal on Ad Hoc Networks, vol. 16, May 2014, pp. 120-130 (DOI, PDF)
• Stephan Sigg, Shuyu Shi and Yusheng Ji: Teach your WiFi-Device: Recognise Simultaneous Activities and Gestures from Time-Domain RF-Features, International Journal on Ambient Intelligence and Computing (IGI), vol. 6, no. 1, January 2014 (DOI)

2013

• Stephan Sigg, Mario Hock, Markus Scholz, Gerhard Troester, Lars Wolf, Yusheng Ji and Michael Beigl: Passive, device-free recognition on your mobile phone: tools, features and a case study, 10th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous 2013), Tokyo, Japan, 2013
• Stephan Sigg, Shuyu Shi, Felix Buesching, Yusheng Ji and Lars Wolf: Leveraging RF-channel fluctuation for activity recognition, 11th International Conference on Advances in Mobile Computing and Multimedia (MoMM2013), Vienna, Austria, 2013
• Stephan Sigg, Shuyu Shi, and Yusheng Ji: RF-based device-free recognition of simultaneously conducted activities, adjunct proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp 2013), Zurich, Switzerland, 2013
• Shuyu Shi, Stephan Sigg and Yusheng Ji: Joint Localisation and Activity Recognition from Ambient FM Broadcast Signals, adjunct proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp 2013), Zurich, Switzerland, 2013
• Shuyu Shi, Stephan Sigg and Yusheng Ji: ActiviTune: A Multi-stage system for activity recognition of passive entities from ambient FM-radio signals, in the 8th International Conference on Wireless Algorithms, Systems, and Applications (WASA 2013)
• Stephan Sigg, Predrag Jakimovski, Yusheng Ji and Michael Beigl: Utilising convolutions of random functions to realise function calculation via a physical channel, accepted for presentation at the 2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
• Dominik Schuermann and Stephan Sigg: Secure communication based on ambient audio, in IEEE Transactions on Mobile Computing (TMC), Feb. 2013, vol. 12 no. 2 (DOI)
• Markus Scholz, Dawud Gordon, Leonardo Ramirez, Stephan Sigg, Tobias Dyrks and Michael Beigl: A Concept for Support of Firefighter Frontline Communication, in Future Internet, vol.5, no. 2, pp. 113-127 (PDF, DOI)
• Shuyu Shi, Stephan Sigg and Yusheng Ji: A comparison of two approaches to activity recognition of individuals in an indoor environment, in 2013 IEICE General Conference

2012

• Shuyu Shi, Stephan Sigg and Yusheng Ji: Passive detection of situations from ambient FM-radio signals, in Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12). Pittsburgh, PA, USA, 1049-1053, 2012 (doi: 10.1145/2370216.2370440) (DOI)
• Shuyu Shi, Stephan Sigg and Yusheng Ji: Activity recognition from Radio Frequency data: Two-stage recognition and features, in Proceedings of the 2012 IEICE Society Conference
• Stephan Sigg, Predrag Jakimovski and Michael Beigl: Calculation of functions on the RF-channel for IoT, in Proceedings of the 3rd international conference on the Internet of Things (IoT2012), October 2012 (DOI)
• Shuyu Shi, Stephan Sigg and Yusheng Ji: Activity recognition from Radio Frequency data: Multi-stage recognition and features, in Proceedings of the 2012 IEEE Vehicular Technology Conference (VTC Fall), pp.1-6, 3-6 Sept. 2012 (DOI)
• Stephan Sigg, Lei Zhong, Yusheng Ji: Activity recognition with implicit context classification, in Proceedings of the 2012 IEEE Vehicular Technology Conference (VTC Fall), pp.1-6, 3-6 Sept. 2012 (DOI)
• Stephan Sigg, Ngu Nguyen, An Huynh and Yusheng Ji: AdhocPairing: Spontaneous audio based secure device pairing for Android mobile devices, in Proceedings of the 4th International Workshop on Security and Privacy in Spontaneous Interaction and Mobile Phone Use, in conjunction with Pervasive 2012, 2012 (PDF, slides)
• Stephan Sigg, Dawud Gordon, Georg von Zengen, Michael Beigl, Sandra Haseloff and Klaus David: Investigation of context prediction accuracy for different context abstraction levels, in IEEE Transactions on Mobile Computing (TMC), 2012 (DOI)
• Ngu Nguyen, Stephan Sigg, An Huynh and Yusheng Ji: Pattern-based Alignment of Audio Data for Ad-hoc Secure Device Pairing, in 2012 16th International Symposium on Wearable Computers (ISWC), pp.88-91, 18-22 June 2012 (DOI, slides)
• Ngu Nguyen, Stephan Sigg, An Huynh and Yusheng Ji: Using ambient audio in secure mobile phone communication, 2012 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops), pp.431-434, 19-23 March 2012 (DOI, poster)
• Predrag Jakimovski, Hedda R. Schmidtke, Stephan Sigg, Leonardo Weiss, Ferreira Chaves and Michael Beigl: Collective Communication for Dense Sensing Environments, in Journal of Ambient Intelligence and Smart Environments (JAISE), 2012 (DOI)

2011

• Markus Scholz, Stephan Sigg, Hedda Schmidtke and Michael Beigl: Challenges for device-free radio-based activity recognition, in Proceedings of the 3rd Workshop on Context Systems Design Evaluation and Optimisation (CoSDEO), 2011 (PDF)
• Markus Scholz, Stephan Sigg, Dimana Shihskova, Georg von Zengen, Gerrit Bagshik, Toni Guenther, Michael Beigl and Yusheng Ji: SenseWaves: Radiowaves for context recognition, in Video Proceedings of the 9th International Conference on Pervasive Computing (Pervasive 2011), 2011 (Video, PDF)
• Stephan Sigg, Dominik Schuermann and Jusheng Ji: PINtext: A framework for secure communication based on context, in Proceedings of the 8th International ICST Conference on Mobile and Ubiquitous Systems (MobiQuitous 2011), 2011 (DOI)
• Johannes Starosta, Markus Reschke, Sebastian Schwarzl, Stephan Sigg and Michael Beigl: Context awareness through the RF-channel, in 2nd workshop for Context Systems Design and Evaluation (CoSDEO) in conjunction with 5th Conference on Architecture for Computing Systems (ARCS), 2011 (PDF)
• Stephan Sigg, Rayan Merched El Masri and Michael Beigl: Feedback based closed-loop carrier synchronisation: A sharp asymptotic bound, an asymptotically optimal approach, simulations and experiments, in IEEE Transactions on Mobile Computing (TMC), 2011 (DOI)
• Stephan Sigg, Predrag Jakimovski, Florian Becker, Hedda Schmidtke, Martin Alexander Neumann, Yusheng Ji and Michael Beigl: Neuron-inspired collaborative transmission in wireless sensor networks, in Proceedings of the 8th International ICST Conference on Mobile and Ubiquitous Systems (MobiQuitous 2011), 2011 (DOI,slides)
• Stephan Sigg: Context-based security: State of the art, open research topics and a case study, in Proceedings of the 5th ACM International Workshop on Context-Awareness for Self-Managing Systems (CASEMANS 2011), 2011 (DOI, slides)
• Stephan Sigg, Matthias Budde, Yusheng Ji and Michael Beigl: Entropy of audio fingerprints for unobtrusive device authentication, in Poster Proceedings of the 7th International and Interdisciplinary Conference on Modeling and Using Context (Context2011), 2011 (Online, poster)
• Stephan Sigg, Michael Beigl and Behnam Banitalebi: Efficient adaptive communication from resource restricted transmitters, In Organic Computing - A Paradigm Shift for Complex Systems, Christian Mueller-Schloer and Hartmut Schmeck and and Theo Ungerer, Springer, 2011 (Online)
• Stephan Sigg and Michael Beigl: An adaptive protocol for distributed beamforming, in 17. Fachtagung 'Kommunikation in Verteilten Systemen 2011' (KiVS11), 2011 (PDF)
• Markus Reschke, Johannes Starosta, Sebastian Schwarzl and Stephan Sigg: Situation awareness based on channel measurements, 2011 73rd IEEE Vehicular Technology Conference (VTC Spring), pp.1-5, 15-18 May 2011 (DOI)
• Predrag Jakimovski, Florian Becker, Stephan Sigg, Hedda R. Schmidtke and Michael Beigl: Collective Communication for Dense Sensing Environments, in 7th IEEE International Conference on Intelligent Environments (IE), 2011 (**Best paper**) (DOI)
• Dawud Gordon, Stephan Sigg and Michael Beigl: Using Prediction to Conserve Energy in Recognition on Mobile Devices, in 9th IEEE International Conference on Pervasive Computing and Communications (PerCom), WiP session, 2011 (DOI)
• Behnam Banitalebi, Dawud Gordon, Stephan Sigg, Takashi Miyaki and Michael Beigl: Collaborative Channel Equalization: Analysis and Performance Evaluation of Distributed Aggregation Algorithms in WSNs, in Proceedings of the 8th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE MASS 2011), 2011 (DOI)

2010

• Stephan Sigg and Michael Beigl: Distributed adaptive expectation aware in-network context processing, in Fourth ACM International Workshop on Context-Awareness for Self-Managing Systems, 2010 (DOI, slides)
• Behnam Banitalebi, Stephan Sigg and Michael Beigl: Performance analysis of receive collaboration in TDMA-based Wireless Sensor Networks, in Proceedings of the fourth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (Ubicomm), October 2010 (PDF)
• Behnam Banitalebi, Stephan Sigg and Michael Beigl: On the Feasibility of Receive Collaboration in Wireless Sensor Networks, in Proceedings of the 21st annual IEEE Symposium on Personal, Indoor and Mobile Radio Communications, March 2010 (DOI)
• Stephan Sigg: Optimisation of a three stage cooling process, Master's Thesis, FernUniversitaet in Hagen, Februar 2010
• Rayan Merched El Masri, Stephan Sigg and Michael Beigl: An asymptotically optimal approach to the distributed adaptive transmit beamforming in wireless sensor networks, in Proceedings of the 16th European Wireless Conference, April 2010 (DOI)
• Niklas Klein, Stephan Sigg, Klaus David and Michael Beigl: DAG Based Context Reasoning: Optimised DAG Creation, in Proceedings of the first Workshop on Context-Systems Design, Evaluation and Optimisation, February 2010
• Stephan Sigg, Klaus David and Sandra Haseloff: An Alignment Approach for Context Prediction Tasks in UbiComp Environments, in IEEE Pervasive Computing, Los Alamitos, CA, USA, IEEE Computer Society, 2010 (DOI,PDF)

2009

• Stephan Sigg, Rayan Merched El Masri and Julian Ristau Michael Beigl: Limitations, performance and instrumentation of closed-loop feedback based distributed adaptive transmit beamforming in WSNs, in Fifth International Conference on Intelligent Sensors, Sensor Networks and Information Processing - Symposium on Adaptive Sensing, Control, and Optimization in Sensor Networks, 2009 (DOI)
• Stephan Sigg and Michael Beigl: Algorithmic approaches to distributed adaptive transmit beamforming, in Fifth International Conference on Intelligent Sensors, Sensor Networks and Information Processing - Symposium on Theoretical and Practical Aspects of Large-scale Wireless Sensor Networks, 2009 (DOI, slides)
• Stephan Sigg and Michael Beigl: Algrithms for closed-loop feedback based distributed adaptive beamforming in wireless sensor networks, in Fifth International Conference on Intelligent Sensors, Sensor Networks and Information Processing - Symposium on Adaptive Sensing, Control, and Optimization in Sensor Networks, 2009 (DOI)

2008

• Stephan Sigg and Michael Beigl: Randomised Collaborative Transmission of Smart Objects, in 2nd International Workshop on Design and Integration Principles for Smart Objects (DIPSO2008) in conjunction with Ubicomp 2008, September 2008 (PDF)
• Stephan Sigg, Daniel Roehr, Monty Beuster and Michael Beigl: Audio Fingerprinting in UbiComp Environments - Performance Measurements and Applications, in Proceedings of the fifth International Conference on Networked Sensing Systems (INSS'08), Juni 2008
• Stephan Sigg, Monty Beuster, Daniel Roehr and Michael Beigl: Search Space Size and Context Prediction, in Proceedings of the fifth International Conference on Networked Sensing Systems (INSS'08), June 2008
• Stephan Sigg: Ein Vergleich von Varianten endlicher Quantenautomaten - Eine algorithmenorientierte Analyse, VDM Verlag, March 2008 (Verlag)
• Stephan Sigg: Development of a novel context prediction algorithm and analysis of context prediction schemes, University of Kassel, Chair for Communication Technology, ComTec, February 2008 (DOI)
• Stephan Sigg and Michael Beigl: Collaborative Transmission in Wireless Sensor Networks by a (1+1)-EA, in Proceedings of the 8th International Workshop on Applications and Services in Wireless Networks (ASWN'08), 2008(DOI)
• Daniel Roehr, Michael Beigl, Monty Beuster, Stephan Sigg, Christian Decker, Till Riedel and Martin Berchtold: Developing a Virtual Environment for better Sensory Perception, in Fifth International Conference on Networked Sensing Systems. June 17 - 19, 2008, Kanazawa, Japan, 2008 (DOI)

2007

• Stephan Sigg, Sandra Haseloff and Klaus David: A Study on Context Prediction and Adaptivity, in Proceedings of the International Workshop on Context Modeling and Management for Smart Environments (CMMSE'07), October 2007 (DOI)
• Stephan Sigg, Sandra Haseloff and Klaus David: Prediction of Context Time Series (PDF), in Proceedings of the 5th Workshop on Applications of Wireless Communications (WAWC'07), J. Ikonen and M. Juutilainen and J. Porras, Seite 31-45, August 2007
• Stephan Sigg, Sian Lun Lau, Sandra Haseloff and Klaus David: Approaching a Definition of Context Prediction, in Proceedings of the Third Workshop on Context Awareness for Proactive Systems (CAPS'07), June 2007
• Stephan Sigg, Sandra Haseloff and Klaus David: Minimising the Context Prediction Error, in Proceedings of IEEE 65th Vehicular Technology Conference VTC2007-Spring (VTC-2007 Spring), April 2007 (DOI)

2006

• Stephan Sigg, Sandra Haseloff and Klaus David: A novel approach to context prediction in ubicomp environments, in Proceedings of the 17th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2006), September 2006 (DOI)
• Stephan Sigg, Sandra Haseloff and Klaus David: The Impact of the Context Interpretation Error on the Context Prediction Accuracy, in Proceedings of the 3rd Annual International Conference on Mobile and Ubiquitous Systems: Networks and Services (MOBIQUITOUS 2006), July 2006 (DOI)
• Stephan Sigg, Sandra Haseloff and Klaus David: Context Prediction by Alignment Methods, in Poster Proceedings of the 4th International Conference on Mobile Systems, Applications, and Services (MobiSys 2006), June 2006 (PDF)
• Tino Loeffler, Stephan Sigg, Sandra Haseloff and Klaus David: The Quick Step to Foxtrot, in Proceedings of the Second Workshop on Context Awareness for Proactive Systems (CAPS 2006), Klaus David and Olaf Droegehorn and Sandra Haseloff, Kassel University press, June 2006 (Online)
• Stephan Sigg and Klaus David: Optimum Resource Allocation in HSDPA, in Proceedings of the 12th European Wireless Conference: Enabling Technologies for Wireless Multimedia Communications (EW 2006), April 2006 (PDF)
• Stephan Sigg, Tino Loeffler, Sandra Haseloff and Klaus David: A Flexible Architecture For Context Aware Applications, in Workshop: Selbstorganisierende, adaptive und kontextsensitive Systeme (SAKS), 2006

2004

• Stephan Sigg: Ein Vergleich verschiedener Varianten endlicher Quanten-Automaten, Master's Thesis, University of Dortmund, August 2004 (PDF in German)