Rajappa Papannareddy, Ph.D. Professor of Electrical & Computer Engineering Technology Technology Building 283 (219) 785-5214 rjp@pnc.edu

Biography

Dr. Papannareddy was born in Bangalore, India.  He received a Bachelor of Engineering degree in electronics from Bangalore University, India, in 1975.  After a year of undergraduate teaching at R. V. College of Engineering, he joined the Indian Space Research Organization Satellite Center, Bangalore, where he worked as an engineer in the area of test and evaluation of satellite RF and microwave communication systems.  In 1983, he received an M.S.E.E. degree from the University of Maryland, College Park, and in 1987, he received a Ph.D. in electrical engineering from Southern Methodist University, Dallas, Texas.  His doctoral thesis work was related to the analysis and characterization of semiconductor lasers in optical communication systems.  In 1988, he joined Purdue University North Central as an Assistant Professor in the Technology and Engineering Section.  In 1993, Dr. Papannareddy was promoted to the rank of associate professor with tenure, and in 2000, he was promoted to the rank of Professor.  His teaching interests include circuit theory, signals and systems, analog electronics, R.F. and microwave  communications, digital signal processing, and lightwave communications. During 2001-2002, he worked in the fiber optic industry (on leave of absence) in the areas of HFC/CATV transmission systems at ARRIS International, Atlanta and 40G long-haul DWDM transmission systems at CIENA Corporation, Maryland.

Dr. Papannareddy has contributed several conference and journal papers in the area of lightwave communication systems and he has published two textbooks on lightwave communication systems including a book chapter on coherent optical communications.  His current research interests include lightwave transmitters and receivers, modeling and characterization of lightwave systems, fiber optic networks, and BER performance analysis, simulation, and measurements. Dr. Papannareddy also contributed to engineering education at the undergraduate level and he has developed a mircrocomputer-based electronic instrumentation laboratory for circuits and electronics courses with the support of a U.S. National Science Foundation grant. Dr. Papannareddy has presented papers related to engineering education at several ASEE conferences.  He has reviewed textbooks, conference, and journal publications; and he has moderated conference sessions. Dr. Papannareddy is a senior member of IEEE and belongs to many other professional societies.

Teaching Interests and Courses

• Circuits and Signals (EE 201, EE 202, ECET 107, ECET 207)
• Electronic Measurement Techniques (EE 207)
• Analog Electronics (EE 255, ECET 157, ECET 257)
• Electronic Devices and Design Laboratory (EE 208)
• R.F. Signals and Systems (ECET 314)
• Communications (ECET 303)
• Analog and Digital Signal Processing (ECET 307 and ECET 357)
• Electrical Machinery and Controls (ECET 231)
• Wireless and Fiber Optic Communications (ECET 414 and ECET 499)

Grants / Awards

• NSF-ILI award for new laboratory experiments in analog electronics courses using microcomputer-based instrumentation and LabVIEW
• Purdue Research Foundation summer faculty and international travel grants

Research Interests

• Lightwave Transmitters and Receivers
• Optical Fiber Amplifiers and DWDM Transmission Systems
• Fiber Optic Networks (Long-haul, Metro, and Access)
• BER Analysis and Measurements
• HFC/CATV Transmission Systems
• System Modeling and Simulation

Professional Activities

• Senior Member of Institute of Electrical and Electronic Engineers
• IEEE student chapter counselor
• Member of IEEE Communications Society
• Member of IEEE Lasers and Electro-Optics Society

Consulting Activities

• PRLightwave

Discovery/Scholarship

• Books and Book Chapters
  
  

  R. Papannareddy, Lightwave Communication Systems - A Practical Perspective, Penram International Publishing, Bombay, India, 2004.

  R. Papannareddy, Introduction to Lightwave Communication Systems, ARTECH House Inc., Boston, MA, 1997.
  
  R. Papannareddy, "Coherent optical communications," Chapter in Optoelectronics: Current Trends, Tata McGraw Hill Co., 1995.
  
  

• Research Publications/Invited Talks/Workshops
  
  

  Collaborative research work on optical networks modeling with Photonics group, Electrical Communication Engineering, Indiana Institute of Science, Bangalore, India.

  Fiber Access Networks, (Invited Talk), International Conference on Optoelectronics, Fiber Optics, and Photonics, Hyderabad, India, December 2006.

  Lightwave Systems and Fiber Optic Networks, (Invited Lectures), IEEE members, Bangalore, India, December 2006.

  Optical Fiber Communication Networks and DWDM And Fiber Access Networks, (Invited Lecture), Workshop at the Indian Institute of Technology, Madras, India, February 2006.
  
  B.G. Balagangadhar, R. Papannareddy, and T. Svinivas, "Constraint Based Routing for Wavelength Routed Optical Networks," Proceedings of International Conference on Optics and Optoelectronics, Dehradun, India, December 2005.
  
  Fiber Optic Communication Devices, Systems, and Networks, Workshop in collaboration with Photonics group, Electrical Communication Engineering, Indian Institute of Science, Bangalore, India, August 2005.
  
  Advanced Photonic Systems, (Invited Talk), CIT, Gubbi, India, March 2005.
  
  Advanced Photonic Systems, (Invited Talk), WIPRO, Bangalore, India, February 2005.
  
  Advanced Photonic Systems, (Invited Talk), Electrical Communication Engineering Department, Indian Institute of Science, Bangalore, January 2005.
  
  R. Papannareddy, HFC/CATV Transmission Systems, (Invited paper), Photonics 2004, Cochin , India , 2004.
  
  R. Papannareddy and A. M. Weiner, "Performance comparison of coherent ultrashort light pulse and incoherent broadband CDMA systems,” IEEE Photonics Technology Letters, vol. 11, no. 12, pp. 1683-1685, December 1999.
  
  R. Papannareddy and A. M. Weiner, "Comparison of BER performance limits for coherent ultrashort light pulse and incoherent broadband CDMA systems," Proceedings of Conference on Lasers and Electrooptics, p. 330, Baltimore, Maryland, November 1999.
  
  R. Papannareddy and A. M. Weiner.  "Bit error rate analysis of an ultrashort pulse code division multiple access communication systems," Proceedings of International Conference on Fiber Optics and Photonics, vol.1, pp. 45-50, New Delhi, India ,1998.
  
  R. Papannareddy, "Effects of Fiber Nonlinearities in Lightwave Systems," Proceedings of International Conference on Fiber Optics and Photonics, Madras, India, 1996.
  
  R. Papannareddy, "A simplified analysis of multi-channel coherent optical ASK communication system with an optical preamplifier," (invited), Proceedings of Emerging Optoelectronic Technologies, Indian Institute of Science, Bangalore, India, July 1994.
  
  R. Papannareddy, "Linewidth requirements for an optical MSK heterodyne/synchronous receiver," IEEE Photonics Technology Letters, vol.4, pp. 768-771, July 1992.
  
  R. Papannareddy, "Bit error rate performance analysis of an optical MSK synchronous receiver," Proceedings of IEEE Global Telecommunications Conference,  vol. 2,  pp. 503.7.1 - 503.7.5, San Diego , CA , 1990.
  
  K. Ben Letaief, R. Papannareddy, and J. S. Sadowsky, “A large deviations analysis of avalanche photodiode receivers,” Proceedings of Twenty-Eighth Annual Allerton Conference on Communication, Control, and Computing, Urbana-Champaign, IL, 1990.
  
  R. Papannareddy, “Feasibility study on optical heterodyne MSK receiver using synchronous demodulation,” Proceedings of IEEE Global Telecommunications Conference, vol. 2, pp. 19.4.1-19.4.6, Dallas, Texas, 1989.
  
  R. Papannareddy, W. Ferguson, and J. K. Butler, “Four models of lateral current spreading in double-heterostructure stripe-geometry lasers,” J. IEEE Quantum Electronics, vol. QE-24, no. 1, pp. 60-65, 1988.
  
  R. Papannareddy, W. Ferguson, and J. K. Butler, “A generalized thermal model for stripe-geometry injection lasers,” J. Apply. Phys., vol. 62, no. 9, 1987.
  
  R. Papannareddy, W. Ferguson, and J. K. Butler, “Current spreading and carrier diffusion in zinc-diffused multiple stripe-geometry lasers,” Appl. Phys. Lett., vol. 50, no. 19, 1987.
  
  R. Papannareddy, W. Ferguson, and J. K. Butler, “Thermal analysis of double-heterostructure lasers using finite elements,” Proceedings of Southwest Conference on Semiconductor Lasers, Albuquerque, New Mexico, 1987.
  
  R. Papannareddy and S. N. Prasad, “EMI design, prediction, and test results on VHF transponder,” J. Institution of Electronics and Communication Engineers, India, vol. 27, pp. 171-177, 1981.

• Technical Reports
  
  

  R. Papannareddy, "Analysis of semiconductor lasers in optical communication systems,” Ph.D. Thesis, Electrical Engineering Department, Southern Methodist University, Dallas, Texas, 1987.

  R. Papannareddy, W. Ferguson, and J. K. Butler, “Double-Heterostructure semiconductor laser device simulation using finite elements,” Technical Report, Department of Electrical Engineering, Southern Methodist University, Dallas, Texas, 1986.

  R. Papannareddy, “An absolute bound on limit cycles in digital filters,” Department of Electrical Engineering, University of Maryland, College Park, Maryland, 1983.