TY  - CHAP
A1  - Goeckel, Tom
A1  - Schiffer, Stefan
A1  - Wagner, Hermann
A1  - Lakemeyer, Gerhard
T1  - The Video Conference Tool Robot ViCToR
T2  - Intelligent Robotics and Applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II
N2  - We present a robotic tool that autonomously follows a conversation to enable remote presence in video conferencing. When humans participate in a meeting with the help of video conferencing tools, it is crucial that they are able to follow the conversation both with acoustic and visual input. To this end, we design and implement a video conferencing tool robot that uses binaural sound source localization as its main source to autonomously orient towards the currently talking speaker. To increase robustness of the acoustic cue against noise we supplement the sound localization with a source detection stage. Also, we include a simple onset detector to retain fast response times. Since we only use two microphones, we are confronted with ambiguities on whether a source is in front or behind the device. We resolve these ambiguities with the help of face detection and additional moves. We tailor the system to our target scenarios in experiments with a four minute scripted conversation. In these experiments we evaluate the influence of different system settings on the responsiveness and accuracy of the device.
Y1  - 2015
SN  - 978-3-319-22876-1
U6  - http://dx.doi.org/10.1007/978-3-319-22876-1_6
N1  - Lecture Notes in Computer Science ; 9245
SP  - 61
EP  - 73
PB  - Springer
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Zierhut, R.
A1  - Jost, T.
A1  - Wang, Wei
T1  - Airport channel measurements at 5.2GHz
T2  - 3rd European Conference on Antennas and Propagation : (EuCAP) ; Berlin, Germany, 23 - 27 March 2009
Y1  - 2009
SN  - 978-1-4244-4753-4 ; 978-3-00-024573-2
SP  - 877
EP  - 881
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Sorger, Ulrich
T1  - A new approach to tracking time-variant channels
T2  - Proceedings / 5th International Symposium on Wireless Personal Multimedia Communications : WPMC : October 27 - 30, 2002, Honolulu, Hawaii ; vol. 3
Y1  - 2002
SN  - 0-7803-7442-8
SN  - 1347-6890
SP  - 1342
EP  - 1345
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Schneckenburger, N.
A1  - Franzen, N.
A1  - Schnell, Michael
A1  - Müller, S.
A1  - Günzel, H.
T1  - L-Band compatibility of LDACS1
T2  - 3rd CEAS Air and Space Conference, 24 - 28 October 2011, Venezia, Italy
Y1  - 2011
SP  - 1
EP  - 8
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Pulini, Paola
T1  - Simplified airport surface channel model based on the WSSUS assumption
T2  - 2010 Integrated Communications, Navigation and Surveillance Conference (ICNS 2010) : Herndon, Virginia, USA, 11 - 13 May 2010
Y1  - 2010
SN  - 978-1-4244-7457-8
SN  - 2155-4943
SP  - F2-1
EP  - F2-11
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Jost, T.
A1  - Walter, M.
T1  - Scatterer based airport surface channel model
T2  - IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla.
Y1  - 2009
SN  - 978-1-4244-4078-8
SP  - 4C2-1
EP  - 4C2-10
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Epple, Ulrich
A1  - Schnell, Michael
T1  - The LDACS1 physical layer design
T2  - Future aeronautical communications
Y1  - 2011
SN  - 978-953-307-625-6
SP  - 317
EP  - 332
PB  - Intech
CY  - London
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
A1  - Bott, Rainer
A1  - Sorger, Ulrich
ED  - Fazel, Khaled
T1  - Equalization for multi-carrier systems in time-varying channels
T2  - Multi-carrier spread-spectrum for future generation wireless systems : fourth international workshop, Germany, September 17-19, 2003
Y1  - 2004
SN  - 1402018371
SP  - 251
EP  - 258
ER  - 
TY  - CHAP
A1  - Gligorevic, Snjezana
T1  - Joint channel estimation and equalization for fast time-variant multipath channels
T2  - Proceedings / 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC 2002 : Lisboa, Portugal, September 15 - 18, 2002
Y1  - 2002
SN  - 0-7803-7589-0
SP  - 1127
EP  - 1130
ER  - 
TY  - JOUR
A1  - Gligorevic, Snjezana
T1  - Joint channel estimation and equalisation of fast time-varying frequency-selective channels
JF  - European transactions on telecommunications
Y1  - 2008
SN  - 1541-8251; 2161-3915; 1120-3862; 1124-318X
VL  - Vol. 19
IS  - Iss. 1
SP  - 1
EP  - 13
ER  -