Dajana Cassioli

Associate Professor

Blocco Zero, Room 211
dajana.cassioli@univaq.it
+39 0862434452

Research highlights

Wireless Multimedia Sensor Networks (WMSNs): within the ERC Starting Grant VISION, I am designing and investigating novel architectures for WMSNs based on UWB 60 GHz radios, IP technology, and full context-awareness and adaptability.

60 GHz communication channel: within the ERC Starting Grant VISION, I have performed an extensive measurement campaign of the 60 GHz communication channels from 54 to 59 GHz and from 61 to 66 GHz in many different environments. I am devising a comprehensive channel model for these bands.

Routing in UWB sensor networks for low-data rate location/tracking applications for logistics and industrial environments: I have introduced a new multi-hop routing protocol with energy-aware feature, based on the greedy-perimeter stateless routing and showed its potentials in many papers for international conferences. This routing protocol has been integrated in the Network layer of the system prototyped in WP3b of the FP6 project PULSERS Phase II.

Evaluation of network architectures for UWB applications at high data rate (HDR and VHDR) and low data rate (LDR): I investigated the performance of several network architectures for UWB applications at HDR, VHDR and LDR within the WP3a of the Integrated FP6 Project PULSERS.

Ultra-Wideband Communications: I derived the first complete channel model for UWB radios that enables fast simulations and tractable performance analysis of UWB systems operating in the frequency range below 1 GHz; the model has had so far a great impact in the scientific community and has been included in the standard model of the IEEE 802.15.4a. I related the strong immunity to fading of UWB signals to the peculiarities of the UWB propagation channel; based on those propagation properties, I proposed the “Partial Rake” as the best trade-off in UWB channels between complexity and performance issues.
Specific contributions include:

Propagation Measurements and Statistical Modeling: I devised a statistical propagation channel model based on experimental data in the band below 1 GHz. Performed extensive measurement campaigns within the EC FP5 IST project ULTRAWAVES framework at higher frequencies (4.78 GHz) using a direct-sequence correlative channel sounder. I derived an accurate statistical characterization of the UWB indoor channel in the band around 5 GHz.

Receiver Design, Analysis and Simulations: I proposed numerical analysis based on the above mentioned model which enable the efficient design of UWB transmission. I evaluated link performance of reduced-complexity Rake receivers based on partial combining (PRake) in realistic UWB channels and compared them with the selective combining (SRake).

Spectral Analysis: I derived general expressions for the PSD of a variety of UWB spread-spectrum signaling schemes including random and periodic scrambling.

Bluetooth: I devised a semi-analytical framework that enables tractable analysis of performance of Bluetooth devices in a multi-piconet environment and conducted accurate capacity and performance analysis of Bluetooth devices in dense piconet areas.

Extension of GPS in railway tunnels at high speed: within a collaboration between RadioLabs and RFI, I was involved in the design of the re-irradiation system. I has been the responsible for the analysis and derivation of the channel model for the propagation of GPS signals in railway tunnels on the basis of simulations of both ray-launcing and propagation measurements conducted in a tunnel.

Simulation of WDM optical networks and optimization of semiconductor optical amplifiers: I designed a modular tool for the simulation of WDM optical networks. I modeled and simulated semiconductor optical amplifiers to optimize the design parameters so as to maximize the gain and saturation power.

 

Research Projects

2010-2015. Principal Investigator of the ERC Starting Independent Researcher Grant VISION - Video-oriented UWB-based Intelligent Ubiquitous Sensing, of the European Research Council. Start date: 1 April 2010. Duration: 60 months. Total budget: 1,2 M€ (EU-funding: 1,2 M€). Host Institution: Università degli Studi dell’Aquila (Principal Beneficiary) Beneficiaries: Università degli Studi di Roma Tor Vergata and Ss. Cyril and Methodius University in Skopje.

2009-2011. Scientific Responsible for RadioLabs of the European Project WiNNOVATE - Mediterranean Wireless Innovation (1G-MED08-525) of the STC Programme MED. Start date: 1 May 2009 Duration: 36 months. Total budget: 1,5 M€ (EU-funding: 1,5 M€). 8 partners (4 public institutions and 4 research centers).

2006-2008. Involved in the proposal writing and in the technical work (with the role of responsible of RadioLabs’ work in WP3b “UWB Sensor Networks for Industrial and Logistics Applications”) of the of the Integrated Project PULSERS Phase II - Pervasive Ultra-wideband Low Spectral Energy Radio Systems of the VI Framework of the European Community (Contract no. FP6-027142). Start date: 1 January 2006. Duration: 30 Months. Total budget: 16.5 M€ (EU-funding: 7.7 M€). 38 partners (accademia and industry). Successfully completed.

2004-2005. Involved in the proposal writing and in the technical work (with the role of responsible of RadioLabs’ work in WP3a) of the Integrated Project PULSERS - Pervasive Ultra-wideband Low Spectral Energy Radio Systems of the VI Framework of the European Community (Contract no. 506897). Start date: 1 January 2004. Duration: 24 Months. Total budget: 20.7 M€ (EU-funding: 12.4 M€). 30 partners (accademia and industry). Evaluated successfully completed at the end date of February 20-21, 2006.

2002-2004. Scientific responsible for RadioLabs of the European Project ULTRAWAVES - ULTRA Wideband Audio Video Entertainment System (Contract no. IST-2001-35189) of the V Framework. Start date: 14 April 2002. Duration: 30 Months. Total budget: 4.03 M€ (EU funding: 2.56 M€). 6 partners (accademia and industry). Evaluated successfully completed at the end date of October 20, 2004.

2001. She was awarded by the Young Researchers Project 2001 – University of Rome “Tor Vergata.”

 

Journal Papers

D. Cassioli, and A. Mecozzi, “Minimum-phase impulse response channels,” IEEE Transactions on Communications, vol. 57 , n. 12, pp. 3529 – 3532, Dec. 2009.

D. Cassioli, R. Giuliano and F. Mazzenga, “Analysis of UWB System Capacity in a Realistic Multipath Environment with Coexistence Constraints,” IET Communications, vol. 1, n. 3, pp. 391 – 397, Jun. 2007.

D. Cassioli, M. Z. Win, A. F. Molisch and F. Vatalaro, “Low-complexity Rake receivers in Ultra-wideband channels,” IEEE Trans. on Wireless Communications, vol. 6, n. 4, pp. 1265-1275, Apr. 2007.

Molisch, A. F.; Cassioli, D.; Chong, C.-C.; Emami, S.; Fort, A.; Kannan, B.; Karedal, J.; Kunisch, J.; Schantz, H. G.; Siwiak, K.; Win, M. Z, “A Comprehensive Standardized Model for Ultrawideband Propagation Channels,” IEEE Transactions on Antennas and Propagation, vol. 54,  n. 11,  Part 1,  pp. 3151–3166, Nov. 2006.

D. Cassioli, and A. Durantini, “Measurements, Modeling and Simulations of the UWB Propagation Channel based on Direct-Sequence Channel Sounding,” Special Issue: “Ultra-wideband Communications” of the Wireless Communications and Mobile Computing Journal, vol.5, n. 5, pp. 513-523, August 2005.

D. Cassioli, S. Persia, V. Bernasconi and A. Valent, “Measurements of the Performance Degradation of UMTS Receivers due to UWB Emissions,” IEEE Communications Letters, vol. 9, n. 5, pp. 441 – 443, May 2005.

W. Ciccognani, A. Durantini, and D. Cassioli, “Time domain propagation measurements of the UWB indoor channel using PN–sequence in the FCC–compliant band 3.6-6 GHz,” IEEE Transactions on Antennas and Propagation, vol. 53, n. 4,  pp.1542 – 1549, April 2005.

F. Mazzenga, D. Cassioli, A. Detti, I. Habib, P. Loreti and F. Vatalaro, “Performance Evaluation in Bluetooth Dense Piconet Areas,” IEEE Transactions on Wireless Communications, vol. 3, n. 6,  pp. 2362 – 2373,Nov. 2004.

D. Cassioli and F. Mazzenga, “Spectral Analysis of UWB Multiple Access Schemes using Random Scrambling,” IEEE Transactions on Wireless Communications, vol.3, n.5, pp. 1637 - 1647, Sept. 2004.

D. Cassioli, Moe Z. Win and Andreas F. Molisch, “The Ultra-Wide Bandwidth Indoor Channel: from Statistical Model to Simulations”, IEEE Journal on Selected Areas on Commun., vol. 20, pp. 1247-1257, Aug. 2002.

D. Cassioli, S. Scotti, e A. Mecozzi, “A Time-Domain Computer Simulator of the Nonlinear Response of Semiconductor Optical Amplifiers,” IEEE Journal of Quantum Electronics, pp. 1072-1080, vol. 36, No. 9, Sept. 2000.

Textbooks/chapters

N. Rendevski and D. Cassioli, “UWB and mmWaves Communication Techniques and Systems for Healthcare” in Ultra-Wideband and 60 GHz Communications for Biomedical Applications, Edition: 1, Publisher: Springer, US, Editors: Mehmet Yuce, 10/2013: pages 1-22; ISBN: 978-1-4614-8895-8.

L. Berardinelli, D. Cassioli, A. Di Marco, A. Esposito, M. T. Riviello, C. Trubiani, "VISION as a support to Cognitive Behavioural Systems," Cognitive Behavioural Systems, EUCogII-SSPnet-COST 2102, Lecture Notes in Computer Science (LNCS), 2012.

D. Cassioli, “Pathloss and Shadowing,” in UWB Communication Systems - A Comprehensive Overview. EURASIP Book Series, 2005.

Refereed Conference Proceedings

C. Rinaldi, N. Rendevski, D.Cassioli, “Performance Evaluation of UWB Signaling at mmWaves,” IEEE ICUWB International Conference on Ultra-Wideband, 1-3 Sept. 2014, Paris, France.

N. Rendevski and D. Cassioli, “BER of IEEE 802.11ad OFDM Radios vs. Carrier Frequency in Real 60 GHz Indoor Channels,” IEEE International Conference on Communication (ICC 2014), Sydney, Australia, 10-14 June, 2014.

D. Cassioli, N. Rendevski, “A Statistical Model for the Shadowing Induced by Human Bodies in the Proximity of a mmWaves Radio Link,” IEEE International Workshop on 5G Technologies, co-located with the IEEE ICC 2014, Sydney Australia, 14 June, 2014.

M. Vari and D. Cassioli, “mmWaves RSSI Indoor Network Localization,” IEEE International Workshop onANLN, co-located with the IEEE ICC 2014, Sydney, Australia, June 2014.

D. Cassioli, L. A. Annoni, S. Piersanti, “Characterization of Path Loss and Delay Spread of 60-GHz UWB Channels vs. Frequency,” IEEE International Conference on Communication (ICC 2013), Budapest, Hungary, 9-13 June, 2013.

D. Cassioli, "60 GHz UWB Channel Measurement and Model," International Conference on Ultra-wideband (ICUWB 2012), Syracuse, NY, USA, Sep. 2012. Invited Paper.

S. Persia and D. Cassioli, "IPv4 Wireless multimedia sensor networks," Third International Workshop on Software Engineering for Sensor Network Applications (SESENA), June 2012. Invited Paper.

S. Persia and D. Cassioli, "IPv4 Wireless Multimedia Sensor Networks," Third International Workshop on Software Engineering for Sensor Network Applications (SESENA 2012), Zurigo, CH, June 2012. Invited Paper.

S. Piersanti, L. A. Annoni, D. Cassioli, "Millimeter Waves Channel Measurements and Path Loss Models," IEEE International Conference on Communication (ICC 2012), pp. 6063-6067, Ottawa, Canada. June 2012.

S. Persia and D. Cassioli, "Energy/Latency Trade-offs in Geographic Routing for Ultrawideband Wireless Sensor Networks," International Conference on sensor networks (SENSORNETS 2012), Rome, Italy. Feb. 2012.

D. Cassioli, "UWB Moves up to mmWaves: a Channel Modeling Perspective," to appear in the Proc. of IEEE International Conference on Ultra-Wideband (ICUWB), 14-16 Sep. 2011, Bologna, Italy. Invited paper.

D. Cassioli et al., "A successful VISION: Video-oriented UWB based intelligent ubiquitous sensing," IEEE Consumer Communications and Networking Conference, (CCNC'2011), pp. 963-964. Las Vegas, NV. Jan. 2011.

S. Persia, D. Cassioli, F. Vatalaro and F. Ananasso, 'Cross-Layer Design of a LDR-L/T UWB Sensor Network,” in the Proceedings of the 10th International Symposium on Spread Spectrum Techniques and Applications (ISSSTA2008), 25-28 August 2008, Bologna, Italy.

D. Cassioli, S. Persia, F. Vatalaro and F. Ananasso, "e-GPSR for LDR-L/T UWB Sensor Networks," in the Proceedings of the Third International Conference on Communications and Networking in China (CHINACOM2008), 25-27 August 2008, Hangzhou, CHINA. (IEEE Catalog Number: CFP0870A, ISBN: 978-1-4244-2374-3, Library of Congress: 2008902964).

S. Persia, D. Cassioli, F. Vatalaro, and F. Ananasso "Impact of Mobility on Geographic Routing," in the Proceedings of the IEEE Int. Symp. on Wireless Pervasive Computing, pp.717-721, May 2008, Santorini, GR.

D. Cassioli, S. Persia, and F. Vatalaro, “Performance Trade-Offs in Energy-Aware Geographic Routing for Low-Data Rate Location/Tracking Applications,” in the Proceedings of Wireless Rural and Emergency Communications Conference 2007 (WRECOM 2007), 1-2 Oct. 2007, Roma, ITALY.

S. Persia, and D. Cassioli, “Routing Design for UWB Sensor Networks in Industrial and Logistics Scenarios,” 16th IST Mobile and Wireless Communications Summit, 2007, pp.1 – 5, 1-5 July 2007, Budapest, HUNGARY. (ISBN 978-963-8111-66-1, IEEE Catalog number: 07EX1670C).

H. Luediger, M.P. Guirao, D. Cassioli, and E. Stenzel, “Overview of an UWB System for LDR-L/T in Industrial and Logistics Scenarios,” 16th IST Mobile and Wireless Communications Summit, 2007, pp.1 – 6, 1-5 July 2007, Budapest, HUNGARY.

E. Cianca, D. Cassioli, A. Alfonsi, G. Casci, and M. De Sanctis, “Energy Efficiency in IR-UWB LDR WPANs Based on an Improved Pulse Collision Model,” in WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS 2006 (WPMC2006), pp.816- 820, 17-20 Sep. 2006, San Diego, USA.

Molisch, A.F.; Balakrishnan, K.; Cassioli, D.; Chia-Chin Chong; Emami, S.; Fort, A.; Karedal, J.; Kunisch, J.; Schantz, H.; Siwiak, K., “A comprehensive model for ultrawideband propagation channels,” IEEE Global Telecommunications Conference, 2005. GLOBECOM '05, vol. 6,  pp.3648-3653, 28 Nov.-2 Dec. 2005.

Cassioli, D.; Giuliano, R.; Mazzenga, F., “Performance evaluation of high data rate UWB systems based on IEEE 802.15.3,” IEEE International Conference on Ultra-Wideband, 2005. ICU 2005. 2005, 5-8 Sept. 2005 p.678 – 683.

A. Durantini and D. Cassioli, “A multi-wall path loss model for UWB indoor propagation,” in the Proceedings of the IEEE Semiannual Veh. Technol. Conf., Spring. May 2005. Stockholm, SWEDEN.

D. Cassioli and A. Durantini, “Statistical Characterization of UWB Indoor Propagation Channels based on Extensive Measurement Campaigns,” in the Proceedings of the Int. Symp. WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS 2004 (WPMC2004), pp.V1-236-240,12-15 September 2004, Abano Terme (PD), ITALY. Invited paper.

D. Cassioli, R. Giuliano, F. Mazzenga, “Capacity Analysis of UWB systems in Realistic Multipath Channels,” in the Proceedings of the Int. Symp. WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS 2004 (WPMC2004), pp.V1-241-245,12-15 September 2004, Abano Terme (PD), ITALY. Invited paper.

D. Cassioli, A. Durantini, and W. Ciccognani, “The role of path loss on the selection of the operating bands of UWB systems,” in Proc. of IEEE Int. Symp. on Personal, Indoor and Mobile Radio Communications, vol. 4, pp. 2787 – 2791, Sept. 2004. Barcelona, SPAIN.

A. Durantini, W. Ciccognani, and D. Cassioli, “UWB Propagation Measurements by PN-Sequence Channel Sounding,", in Proc. IEEE Int. Conf. on Commun., vol. 6,  pp. 3414 – 3418, June 2004. Paris, FRANCE.

D. Cassioli and A. Durantini, “A time domain propagation model of the UWB indoor channel in the FCC-compliant band 3.6-6 GHz based on PN-sequence channel measurements", in Proc. IEEE Semiannual Veh. Technol. Conf., vol. 1,  pp. 213 – 217, May 2004. Spring. Milan, ITALY.  

D. Cassioli, M. Z. Win, F. Vatalaro, and A. F. Molisch, “Effects of Spreading Bandwidth on the Performance of UWB Rake Receivers,” in Proc. IEEE International Conference on Communications, vol. 5,  pp. 3545 – 3549, May 2003. Anchorage, ALASKA, USA.

F. Mazzenga, D. Cassioli, A. Detti, P. Loreti, and F. Vatalaro, “Throughput and Packet delay in Bluetooth Networks,” in Proc. of First Annual Mediterranean Ad hoc Networking workshop, MED-HOC-NET 2002, Sep. 2002. Sardegna Chia (CA), ITALY. Ses. III.2

D. Cassioli, M. Z. Win, F. Vatalaro, and A. F. Molisch, “Performance of Low-Complexity Rake Reception in a Realistic UWB Channel,” in Proc. of IEEE International Conference on Communications, vol. 2, pp. 763 -767, May 2002. New York City, NY, USA.

F. Mazzenga, D. Cassioli, P. Loreti, and F. Vatalaro, “Evaluation of Packet Loss Probability in Bluetooth Networks,” in Proc. IEEE International Conference on Communications, Vol. 1, pp. 313-317, May 2002. New York City, NY, USA.

D. Cassioli, A. Detti, P. Loreti, F. Mazzenga, and F. Vatalaro, “The Bluetooth Technology: State of the Art and Networking Aspects,” in Proc. of the second IFIP-TC6 Networking Conference, Networking 2002, pp. 479-490, May 2002. Pisa, ITALY.

D. Cassioli, Moe Z. Win and Andreas F. Molisch, “A Statistical Model for the UWB Indoor Channel”, in Proc. of IEEE Vehicular Technology Conference, VTC Spring 2001, Vol. 2, pp. 1159-1163, 6-9 May 2001. Rhodes, GREECE.

S. Scotti, D. Cassioli, e A. Mecozzi, “An Efficient Approach for Computer Simulation of Semiconductor Optical Amplifiers,” in Proc. of Conference on Laser and Electro-Optics, CLEO-2000, pp. 419-420, May 2000. San Francisco, CA, USA.

D. Cassioli, S. Scotti, A. Mecozzi, e J. Mørk, “Numerical Model of Frequency Converters based on Four-Wave Mixing in Semiconductor Optical Amplifiers,” in Proc. of the 1st international workshop on semiconductor devices for optical signal processing, April 22, 1999. Rome, ITALY.

Presentations

D. Cassioli, “Millimeter-waves wireless communications,” at the XI International Conference ETAI 2013, Ohrid, Macedonia. 26-28 Sept. 2013. Plenary Talk.

 

Contributions to IEEE Standards

A. F. Molisch, K. Balakrishnan, D. Cassioli, C.-C. Chong, S. Emami, A. Fort, J. Karedal, J. Kunisch, H. Schantz, U. Schuster, and K. Siwiak, “IEEE 802.15.4a channel model – final report,” Nov. 2004.

Molisch, M. Win, and D. Cassioli, “The Ultra-Wide Bandwidth Indoor Channel: from Statistical Model to Simulations,” IEEE P802.15-02/284-SG3a and IEEE P802.15-02/285-SG3a, Jun. 2002.