Research activities at the SI Department are focused towards designing advanced receiver techniques and architectures for the new generation of Communication and Positioning systems. The Department carries out fundamental and applied research in the fields of statistical signal processing, communication theory, multi-antenna systems, data fusion, and PHY prototyping. Activities are centered in four main research lines:
- Advanced synchronization techniques, robust to propagation impairments and weak signal conditions (strong involvement in deep space communications and robust ranging).
- Coding aspects for (5G and beyond) wireless communications, including (physical-layer) network coding and decoding algorithms.
- Anywhere/anytime positioning systems, including GNSS and indoor positioning solutions with proof-of-concept developments.
- Prototyping of PHY communication and positioning systems, with focus on baseband processing but encompassing end-to-end receiver design.
S. Pfletschinger, D. Declercq, M. Navarro, Adaptive HARQ with non-binary repetition coding, IEEE Transactions on Wireless Communications, Vol. 13, No. 8, pp. 4193-4204, August 2014.
M. Luise, C. Fernández-Prades, S. Gezici, H. Wymeersch, Signal processing techniques for anywhere, anytime positioning, EURASIP Journal on Advances in Signal Processing, Vol. 2014, No. 93, June 2014.
X. Liu, M. Liang, Y. Morton, P. Closas, T. Zhang, Z. Hong, Performance evaluation of MSK and OFDM modulations for future GNSS signals, GPS Solutions, Vol. 18, No. 2, pp. 163-175, April 2014.
F. Fabra, C. Calvin, A. Rius, J. Arribas, C. Fernández-Prades, Processing Aspects of the Software PARIS Interferometric Receiver, in Proceedings of the Advanced RF Sensors and Remote Sensing Instruments (ARSI’14), 4-7 November 2014, Noordwijk (The Netherlands).
J. M. Castro, J. Vilà-Valls, P. Closas, J. A. Fernández-Rubio, Simultaneous Tracking and RSS Model Calibration by Robust Filtering, in Proceedings of 48th Asilomar Conference on Signals, Systems and Computers, 2-5 November 2014, Pacific Grove, CA (USA).
S. Pfletschinger, M. Navarro, C. Ibars, Multilevel Coding for Non-Orthogonal Broadcast , in Proceedings of 48th Asilomar Conference on Signals, Systems and Computers, 2-5 November 2014, Pacific Grove, CA (USA).
S. Pfletschinger, M. Navarro, Broadcasting of multiple data streams in overlapping beams and suitable decoding methods , in Proceedings of 13th Signal Processing for Space Communications Workshop (ASMS/SPSC), 8-10 September 2014, Livorno (Italy).
J. Arribas, M. Branzanti, C. Fernández-Prades, P. Closas, Fastening GPS and Galileo Tight with a Software Receiver, in Proceedings of the ION GNSS+, 08-12 September 2014, Tampa, Florida (USA).
A. Gusi, P. Closas, A. Mallat, L. Vandendorpe, Cramér-Rao Bound Analysis of UWB based Localization Approaches , in Proceedings of International Conference on Ultra-WideBand (ICUWB), 1-3 September 2014, Paris (France).
E. Lagunas, M. Navarro, P. Closas, M. Najar, Spatial Sparsity Based Direct Positioning for IR-UWB in IEEE 802.15.4a Channels , in Proceedings of International Conference on Ultra-WideBand (ICUWB), 1-3 September 2014, Paris (France).
S. Pfletschinger, D. Wübben, G. Bacci, Physical-Layer Network Coding with Non-Binary Channel Codes, in Proceedings of URSI General Assembly and Scientific Symposium, 16-23 August 2014, Beijing (China).
J. Vilà-Valls, Q. Wei, P. Closas, C. Fernández-Prades, Robust Gaussian Sum Filtering with Unknown Noise Statistics: Application to Target Tracking, in Proceedings of the IEEE Workshop on Statistical Signal Processing (SSP), 29-2 July 2014, Gold Coast (Australia).
S. Pfletschinger, Joint decoding of multiple non-binary codewords, in Proceedings of IEEE ICC 2014 Workshop on Massive Uncoordinated Access Protocols (MASSAP 2014), 10-14 June 2014, Sydney (Australia).
G. Cocco, S. Pfletschinger, Seek and decode: Random multiple access with multiuser detection and physical-layer network coding, in Proceedings of IEEE ICC 2014 Workshop on Massive Uncoordinated Access Protocols (MASSAP 2014), 10-14 June 2014, Sydney (Australia).
S. Pfletschinger, C.vitiello, M. Navarro, Decoding Options for the Symmetric and Asymmetric Turbo-Coded Two-Way Relay Channel, in Proceedings of the European Conference on Networks and Communications (EuCNC), 23-26 June 2014, Bologna (Italy).
J. Arribas, P. Closas, C. Fernández-Prades, Interference Mitigation in GNSS Receivers by Array Signal Processing: A Software Radio Approach, in Proceedings of the 8th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2014), 22-25 June 2014, A Coruña (Spain).
S. Pfletschinger, M. Navarro, G. Cocco, Interference Cancellation and Joint Decoding for Collision Resolution in Slotted ALOHA, in Proceedings of International Symposium on Network Coding (NetCod 2014), 27-28 June 2014, Aalborg (Denmark).
P. Closas, J. A. Fernández-Rubio, Cramér-Rao lower bound for breakpoint distance estimation in a path-loss model, in Proceedings of IEEE International Conference on Communications (IEEE ICC 2014), 10-14 June 2014, Sydney (Australia).
H. Benzerrouk, A. Nebylov, P. Closas, MEMS IMU/ZUPT Based Cubature Kalman Filter applied to Pedestrian Navigation System, in Proceedings of International Electronic Conference on Sensors and Applications, 1-6 June 2014.
S. Fosson, J. Matamoros, C. Antón-Haro, E. Magli, Distributed Support Detection of Jointly Sparse Signals, in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 4-9 May 2014, Firenze (Italy).
A. Gusi-Amigó, P. Closas, A. Mallat, L. Vandendorpe, Ziv-Zakai Lower Bound for UWB based TOA Estimation with Unknown Interference, in Proceedings of the IEEE International Conference on Acoustic, Speech and Signal Processing (ICASSP), 4-9 May 2014 , Florence (Italy).
X. Mestre, D. Gregoratti, A parallel processing approach to filterbank multicarrier MIMO transmission under strong frequency selectivity , in Proceedings of International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 4-9 May 2014, Florence (Italy).
X. Mestre, S. Pfletschinger, M. Majoral, Method for equalizing filterbank multicarrier (FBMC) modulations , Granted patent: USA 8.929.495
M. Nájar, M. Navarro, Method of Demodulation and Synchronization in Ultrawideband Systems , Granted patent: US 8.472.500, EP2332267, ES2355999.