Saul Torrico

Saul Torrico
Title:
Professorial Lecturer
Email:
storrico@gwu.edu

Areas of Expertise

Applied Electromagnetic; Radiowave Propagation for Wireless Communication Systems; Applied Mathematics for Electromagnetic Theory

Dr. Torrico’s current research topics include theoretical investigation of electromagnetic radiation by unconventional sources, wave propagation in random media, wave propagation in natural and vegetated urban environments applied to cellular and related applications, radiation and scattering of electromagnetic waves in complex media, numerical and asymptotic methods in electromagnetic problems, wave propagation in confined environments, and spectrum management techniques. Also, Dr. Torrico (1985-Present) is presently Principal Scientist and a Fellow at Comsearch, a CommScope Company, in Ashburn, VA, where he has been responsible for directing Comsearch’s efforts in research and development in the areas of radiowave propagation and system design pertinent to mobile communications systems, terrestrial microwave communications systems, and mobile satellite systems. He is the co-author of a chapter for the Handbook on Antennas in Wireless Communications (CRC Press – 2002) and also a co-author of a chapter for the book Transmission Techniques for Digital Communications (Elsevier Ltd. – 2016).

Education

Ph.D. Electrophysics, The George Washington University, Washington DC. 1998.
M.S.E.E., The George Washington University, Washington DC., 1992.
B.S.E.E., The George Washington University, Washington DC., 1983.

Publications

  • S. A. Torrico, H. L. Bertoni, and R. H. Lang, “Theoretical investigation of foliage effects on path loss for residential environments,” in Proc. IEEE Veh. Technol. Conf. (Atlanta, GA, 1996), pp. 854-858.
  • S. A. Torrico, H. L. Bertoni, and R. H. Lang, “Effects of building/tree heights on the propagation loss for residential environments,” IEEE Antennas Propagat.- USNC/URSI Sympo. (Montreal, Canada, 1997), p. 429.
  • S. A Torrico, H. L. Bertoni, and R. H. Lang, “Modeling tree effects on path loss in a residential environment,” IEEE Trans. Antennas Propagat., Special Issue in Wireless Communications, Vol. 46, no 6, June, 1998 pp. 872 – 880.
  • S. A. Torrico and R. H. Lang, “Bistatic scattering effects from a tree in a vegetated residential environment,” URSI National Radio Science Meeting, Boulder, CO, January 1998, p. 24.
  • S. A. Torrico and R. H. Lang, “Simple Engineering Expressions to Predict the Specific Attenuation of a Tree,” Rep. COST 259 TD (99) #5, Thessaloniki, Greece, January 1999.
  • S. A. Torrico and R. H. Lang, “Millimeter wave attenuation predictions through tree forest Part I,” URSI National Radio Science Meeting, Boulder, CO, January 2001.
  • Henry L. Bertoni and Saul A. Torrico, “Propagation Prediction for Urban Systems.” In Handbook of Antennas in Wireless Communications. Ed. Lal Chand Godara. Boca Raton, Florida CRC Press LLC, 2002.
  • S. A. Torrico and R. H. Lang, “Millimeter wave attenuation predictions through tree forest Part II,” URSI National Radio Science Meeting, Boulder, CO, January 2002.
  • S. A. Torrico and R. H. Lang, “Radio Wave Propagation through Forest: A Multi-Frequency Overview,” IEEE Sarnoff Symposium (New Jersey, March 2002).
  • S. A. Torrico and R.H. Lang, “Foliage Effects on Path Loss for Residential Environments,” Progress In Electromagnetics Research Symposium (PIERS), Cambridge, Massachusetts July 2002.
  • S. A.  Torrico and Sahay Vishnu, “Stochastic Model for Sharing between HAPS and FWA at 27 GHZ,” ITU-R Geneva, Switzerland (November-December 2002).
  • S. A. Torrico and H. L. Bertoni, “Predicting the Radio Channel for Third-Generation Systems,” World Wireless Congress, San Francisco, California May 27-30, 2003.
  • S. A. Torrico and R. H. Lang, “Total Attenuation Through a Two-Dimensional Trunk Dominated Forest,” URSI National Radio Science Meeting, Boulder, CO, January 2004.
  • S. A. Torrico and R. H. Lang, “Radiowave Propagation Through a Trunk-Dominated Forest,” COST-273 TD(04) 105, Gothenburg, Sweden June 7-10 ,2004.
  • S. A. Torrico and R. H. Lang, “Effects of Trees on Path Loss in a Vegetated Residential Environment,” IEEE Antennas and Propagat.- USNC/URSI Interna. Sympo. (Washington, DC., USA, 2005), s017p02u.
  • Henry L. Bertoni, Saul A. Torrico and George Liang, “Predicting the Radio Channel Beyond Second-Generation Wireless Systems,” IEEE Antennas and Propagation Magazine,Vol. 4, N04, August 2005.
  • S. A. Torrico and R. H. Lang, “Effects of Trees on Path Loss in a Vegetated Residential Environment – Spectral Approach I,” URSI National Radio Science Meeting, Boulder, CO, January 2006.
  • S. A. Torrico and R. H. Lang, “A Simplified Analytical Model to Predict the Specific Attenuation of a Tree Canopy,” IEEE Trans. Vehicular Technology, Vol. 56, no 2, March 2007 pp. 696 - 703.
  • S. A. Torrico and R. H. Lang, “Radio Wave Propagation in a Vegetated Residential Environment – Angular Spectral Approach II,” Interna. Union of Radio Science Conf. (Ottawa, Canada, July 2007).
  • S. A. Torrico and H. L. Bertoni, “Wave Propagation in an Inhomogeneous Atmosphere Using the Fresnel-Kirchhoff Approximation,” European Conference on Antennas Propagation (EuCAP)  (Edinburgh, UK, November 11-16, 2007).
  • S. A. Torrico and R. H. Lang, “Diffraction and Scattering of Trees and Houses on Path Loss in a Vegetated Residential Environment,” 11th URSI Commission F Triennial Open Symposium on Radio Wave Propagation and Remote Sensing. (Rio de Janeiro, Brazil, 30 October – 2 November 2007).
  • S. A. Torrico and R. H. Lang, “Diffraction and Scattering of Trees and Houses on Path Loss in a Vegetated Residential Environment,” Rep. COST 2100 TD (08) 507, Trondheim, Norway, June 2 – 6, 2008.
  • S. A. Torrico and R. H. Lang, “Mobile – to – Mobile Path Loss Calculation in a Vegetated Residential Environment,” IEEE Antennas and Propagat.- USNC/URSI Interna. Sympo., San Diego, CA, USA, July 2008.
  • C. Utku, R. H. Lang , and S. A. Torrico, “Propagation of Coherent and Incoherent Waves in a Trunk Dominated Forest,” URSI National Radio Science Meeting, Boulder, CO, January 2009.
  • R. H. Lang, S. A. Torrico, C. Utku, and S. Seker, “Mobile-to-Mobile Communications in a Trunk Dominated Park Environment,” European Conference on Antennas Propagation (EuCAP,)  Berlin, Germany, March 23-27, 2009 pp. 1927-1931.
  • S. A. Torrico and R. H. Lang, “Wave Propagation in a Vegetated Residential Area Using the Distorted Born Approximation and the Fresnel-Kirchhoff Approximation,” European Conference on Antennas Propagation (EuCAP), Berlin, Germany, March 23-27, 2009  pp. 1693-1696.
  • S. A. Torrico and R. H. Lang, “Millimeter Wave Scattering and Attenuation Prediction from a Volume with Random Located Lossy-Dielectric Discs – Forward Scattering Approximation – Radiative Transport Theory,” Rep. COST 2100 TD (09) 948, Wien, Austria, September 28 – 30, 2009.
  • S. A. Torrico and R. H. Lang, “Effects of Trees on Path Loss in a Vegetated Residential Environment – Radiative Transport Theory,” URSI National Radio Science Meeting, Boulder, CO, January 6-8, 2010.
  • S. A. Torrico and R. H. Lang, “Millimeter Wave Scattering and Attenuation Prediction from a Canopy of a Tree – Radiative Transport Theory,” European Conference on Antennas Propagation (EuCAP), Barcelona, Spain, April 12-16, 2010.
  • S. A. Torrico and R. H. Lang, “Path Loss Calculation in a Vegetated Environment  – 3D-Radiative Transport Theory,” URSI National Radio Science Meeting, Boulder, CO, January 5-8, 2011.
  • K. L Chee, S. A. Torrico, and T. Kürner, “Foliage Attenuation over Mixed Terrain in Rural Area for Broadband Wireless Access at 3.5GHz,” IEEE Trans. Antennas Propagat., Vol. 59, no 7, July, 2011 pp. 2698 – 2706.
  • S. A. Torrico and R. H. Lang, “Specific Attenuation Through a Tree Canopy: 3-D Vector Radiative Transport Approach,” 12th URSI Commission F Triennial Open Symposium on Wave Propagation and Remote Sensing, Garmisch-Partenkirchen, Germany, March 8-11, 2011.
  • K. L Chee, F. Catalán, S. A. Torrico, and T. Kürner, “Modeling of Tree Scattering in Rural Residential Areas at 3.5GHz,” 12th URSI Commission F Triennial Open Symposium on Wave Propgation and Remote Sensing, Garmisch-Partenkirchen, Germany, March 8-11, 2011.
  • S. A. Torrico, K. L. Chee, and T. Kürner, “A Propagation Prediction Model in Vegetated Residential Environments – A Simplified Analytical Approach,” European Conference on Antennas Propagation (EuCAP), Rome, Italy, pp. 3435-3439, April 11-15, 2011.
  • S. A. Torrico and R. H. Lang, “Specific Attenuation Through a Tree Canopy: 3D – Vector Radiative Transport Theory,” Rep. COSTIC1004 TD (11) 01059, Lund, Sweden, June 20-21, 2011.
  • S. A. Torrico and R. H. Lang, “Predicting the Propagation Loss Through a Tree Canopy at Millimeter Frequencies – Forward Scattering Approximation – 3-D Vector Radiative Transport Theory,” XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science, Istambul, Turkey, 13-20 August, 2011.
  • S. A. Torrico, K. L. Chee, and T. Kürner, “A Propagation Prediction Model in Vegetated Residential Environments – A Simplified Analytical Approach,” Rep. COSTIC1004 TD (12) 03014, Barcelona, Spain, February 8-10, 2012.
  • S. A. Torrico and Roger H. Lang, “Wave Attenuation Prediction Through a Volume of Random Located Lossy-Dielectric Branches – 3D-Vector Transport Theory,” European Conference on Antennas Propagation (EuCAP), Prague, Czech Republic, March 26-30, 2012.
  • K. L. Chee, S. A. Torrico, T. Kürner, J. Baumgarten, A. Hecker, P. Zahn, and M. Rohner, “Propagation Prediction and Measurement in Vegetated Moderately Build-Up Areas,” European Conference on Antennas Propagation (EuCAP), Prague, Czech Republic, March 26-30, 2012.
  • K. L. Chee, S. A. Torrico, and T. Kürner, “Radiowave Propagation Prediction in Vegetated Residential Environments – Part I: Theoretical Modeling,” Rep. COSTIC1004 TD (12) 04017, Lyon, France, May 2-4, 2012.
  • K. L. Chee, S. A. Torrico, T. Kürner, J. Baumgarten, P. Zahn, M. Braun, and M. Rohner, “Radiowave Propagation Prediction Model in Vegetated Residential Environments – Part II: Verification by Measurements,” Rep. COSTIC1004 TD (12) 05055, Bristol, UK, September 24-26, 2012.
  • K. L. Chee, S. A. Torrico and T. Kürner, “Radiowave Propagation Prediction in Vegetated Residential Environments,” IEEE Trans. Vehicular Technology, Vol. 62, no 2, February 2013 pp. 486 – 499.
  • K. L. Chee, J. Baumgarten, P. Zahn, M. Rohner, M. Braun, S. A. Torrico, and T. Kürner “Field Strength Measurements in Vegetated Residential Environments,” European Conference on Antennas Propagation (EuCAP), Gothenburg, Sweden, April 8-12, 2013.
  • S. A. Torrico, R. H. Lang, and C. Utku, “Radiative Transfer Theory vs. Monte-Carlo Simulations: Propagation Loss Predictions for Mobile-to-Mobile Communications in a Trunk Dominated Park,” Rep. COST-IC1004 TD(13)08013, Ghent, Belgium, September 25-27, 2013.
  • K. L Chee, F. Catalán, S. A. Torrico, and T. Kürner, “Modeling of Tree Scattering in Rural Residential Areas at 3.5GHz,” Radio Sci., Vol-49, doi: 10.1002/2013RS005173, January 2014.
  • S. A. Torrico, R. H. Lang, and C. Utku, “2-D Radiative Transfer Theory: Propagation Loss Predictions in a Trunk Dominated Forest,” XXXI URSI General Assembly and Scientific Symposium of International Union of Radio Science, Beijing, China, 16-23 August, 2014.
  • S. A. Torrico and R. H. Lang, “2-D Radiative Transfer Theory – Forward Scattering Approximation: Mobile-to-Mobile Communication in a Trunk Dominated Forest,” 1st URSI Atlantic Radio Science Conference (AT-RASC), Gran Canaria, Canary Island, 18-25 May, 2015.
  • Henry L. Bertoni and Saul A. Torrico, “Properties and measures of the radio channel.” In the book Transmission Techniques for Digital Communications. Ed. Ezio Biglieri, Elsevier Ltd., 2016.

Distinctions

  • Senior Member, Institute of Electrical and Electronic Engineers (Societies – Antenna & Propagation, Vehicular Technology, Geoscience & Remote Sensing, and Communications)

  • Named CommScope Fellow, the top level CommScope’s engineering technical latter, the company’s official structure for professionally honoring and rewarding its engineering and technical employees. Recognized across the technology industry, this prestigious title is reserved only for those who have made highly valuable technology contributions to the company over a period of many years

  • Elected Member of the International Union of Radio Science (URSI/USNC) –Commission F (Radio Wave Propagation and Remote Sensing)

  • Active Member, European Cooperation in The Field of Scientific and Technical Research Group, COST –  231/259/273/2100/IC1004/CA15104 (1993-Present)

  • National Spectrum Association, Co-Chairman of Working Group 2 – Radiowave Propagation

  • Active Member, International Telecomunication Union (ITU-R) – Study Group 3 – Radiowave Propagation

  • Active Member of The New York Academy of Sciences