Senior Research Engineer, Signal Processing Resume Example

• Strong background in Digital Signal Processing (DSP), Wireless Communications, and Statistical Signal Processing, with significant experience in the development of signal processing and optimization algorithms for communications systems design, digital/adaptive filter design, Carrier Frequency Offset correction in MIMO-OFDM systems, fading channel equalization, interference and noise suppression, symbol timing, carrier frequency and frame synchronization, I/Q mismatch compensation, adaptive beamforming, receiver performance estimation, signal enhancement, and spectrum sensing.
• Working knowledge of developing signal processing algorithms on TI-DSP's and dsPIC microcontrollers.
• Publications in several international journals and IEEE conferences.
• Co-inventor of five patents (2 issued, 3 submitted).

• Graduate Provost Fellowship, 2003-2004
• Electrical Engineering Departmental Fellowship, 2003-2004
• Graduate Research Fellowship, 2005

Adaptive Methods Employing Optimal Convergence Factors For Processing Complex Signals and Systems 

United States Patent: 8,144,759 Issued: March 27, 2012

Inventors: Wasfy B Mikhael, Raghuram Ranganathan

Iterative Adaptive Solar Tracking Having Variable Step Size 

United States Patent: 8,338,695 Issued: December 25, 2012

Inventors: Wasfy B Mikhael, Raghuram Ranganathan, Nasser Kutkut, Issa Batarseh

Methods And Apparatus To Update A Reference Database 

United States Patent Application 13/839,722 Submitted: March 15th, 2013

Inventors: Venugopal Srinivasan, Raghuram Ranganathan, Alexander Topchy

Signature Retrieval And Matching For Media Monitoring 

United States Patent Application 61/976,168 Submitted: April 7th, 2014 

Inventors: Dan Nelson, Raghuram Ranganathan, Ken McArthur, Venugopal Srinivasan, Arun Ramaswamy

Engineering Tools - MATLAB, SIMULINK, TI Code Composer Studio, Microchip MPLAB IDE, xIDE, MathCAD, and MultiSim

Programming Skills - ­ C, C++, C#, Python, Cygwin, MonoDevelop, XCode

Operating Systems - Windows, Linux, iOS

Journals:  

• Y.Liu, R.Ranganathan, M.Hunter, and W.B.Mikhael, "Complex Adaptive LMS Employing the Conjugate Gradient Principle for Channel Estimation and Equalization", Circuits, Systems & Signal Processing, April 2011.
• W.B. Mikhael, R. Ranganathan, and T.Yang, "Complex Adaptive ICA employing the Conjugate Gradient principle for Signal Separation in Time-Varying Flat Fading Channels", Circuits, Systems & Signal Processing, Vol. 29, 2010, pp. 469-480.
• R.Ranganathan, T.Yang, and W.B. Mikhael, "Optimum Block Adaptive ICA for Separation of Real and Complex Signals With Known Source Distributions in Dynamic Flat Fading Environments", Journal of Circuits Systems and Computers (JCSC), Vol. 19, Issue 2, April 2010, pp. 367-379.
• Y.Liu, R.Ranganathan, M.Hunter, and W.B.Mikhael, "Fast converging Conjugate-Gradient adaptive algorithm for complex channel estimation", IET Electronics Letters, Vol. 46, Issue 2, January 2010, pp.180-182.
• W.B. Mikhael and R.Ranganathan, "Complex Adaptive FIR Digital Filtering Algorithm with Time-Varying Independent Convergence Factors", EURASIP Signal Processing, Volume 88, Issue 7, July 2008, pp.1889-1893.
• R. Ranganathan and W.B. Mikhael, "A Comparative Study of Complex Gradient and Fixed-Point ICA algorithms for Interference Suppression in Static and Dynamic Channels", EURASIP Signal Processing, Vol. 88, Issue 2, February 2008, pp.399-406.
• R. Ranganathan, T. Yang and W. B Mikhael, "Adaptive ICA for Separation of Complex Signals with Known Source Distributions in Time-Varying Channels", IET Electronics Letters, Vol. 43, Issue 15, July 2007, pp.838-839.
• R. Ranganathan and W.B Mikhael, "Fast-converging complex adaptive algorithm for diversity wireless receivers in linearly fading channels", IEE Electronics Letters, Vol. 42, Issue 15, pp. 886­-887, July 2006.
• R. Ranganathan and W.B Mikhael, "Mismatch Cancellation for Low-IF Wireless receivers using OBAI-ICA", WSEAS Transactions on Information Science and Applications, Vol.3, No.1, pp 204-209, January 2006.

Conferences:  

• R. Ranganathan, T.Yang and W.B Mikhael, "ICA-based Multi-user Detection and Intercarrier Interference Cancellation in Dynamic Environments for MIMO-OFDM Systems", Invited paper: Special Session on DSP and Wireless Communication Systems, IEEE Midwest Symposium on Circuits and Systems, Seoul, Korea, August 7 - 10, 2011.
• Y.Liu, R.Ranganathan, M.Hunter, and W.B.Mikhael, "Optimal Block Adaptive I/Q Imbalance Compensation in Wireless Quadrature Receivers", IEEE Midwest Symposium on Circuits and Systems, Seattle, Washington, August 1-4, 2010.
• Y.Liu, M.Hunter, R.Ranganathan, and W.B.Mikhael, "Conjugate Gradient Based Complex Block LMS Employing Time-Varying Optimally Derived Stepsizes", IEEE Midwest Symposium on Circuits and Systems, Cancun, Mexico, August 25, 2009, pp. 590 - 593.
• R.Ranganathan and W.B Mikhael, "A Novel Digital Beamforming Technique based on Homogeneous Adaptation Employing Time-varying Convergence Factors", IEEE Radio and Wireless Symposium, San Diego, California, January 18-22, 2009, pp. 558-561.
• W.B Mikhael, and R.Ranganathan, "Complex FIR Block Adaptive digital filtering algorithm with Independent Adaptation of Real and Imaginary Filter Parameters", IEEE Midwest Symposium on Circuits and Systems, Knoxville, Tennessee, USA, August 10-13, 2008, pp. 854-857.
• W.B Mikhael and R. Ranganathan, "Complex FIR Block Adaptive algorithm employing Optimal Time-Varying Convergence Factors", IEEE NEWCAS­-TAISA'08, Montreal, Canada, June 22-25, 2008, pp.61-64.
• W.B Mikhael, R. Ranganathan and T.Yang, "Novel Conjugate-Gradient Based Complex Adaptive ICA for Diversity QPSK Receivers in Time-Varying Channel Applications", IEEE Radio and Wireless Symposium, Orlando, Florida, USA, Jan 22-24, 2008, pp. 527-530.
• R. Ranganathan, T. Yang and W.B Mikhael, "Separation of Complex Signals with Known Source Distributions in Time-Varying Channels using Optimum Complex Block Adaptive ICA", IEEE Midwest Symposium on Circuits and Systems (MWSCAS '07), Montreal, Canada, August 5-8, 2007, pp. 361-364.
• R. Ranganathan and W.B Mikhael, "A Novel Interference Suppression Technique employing Complex Adaptive ICA for Time-Varying Channels in Diversity Wireless QAM Receivers", IEEE International Symposium on Circuits and Systems (ISCAS'07), New Orleans, Louisiana, USA, May 27-30, 2007, pp.101-104.
• R.Ranganathan, W.B Mikhael and T.Yang, "An Optimum Block Adaptive ICA Algorithm with Individual Adaptation for Wireless QAM Receivers in Dynamic Environments", IEEE Midwest Symposium on Circuits and Systems (MWSCAS '06), San Juan, Puerto Rico, August 6-9, 2006, Vol. 1, pp. 146-149.

• “Adaptive Filtering Techniques for Aeronautical and Space Communications”, Funded by Florida Space Grant Consortium.
• “Adaptive Techniques for Interference Suppression and Blind Signal Separation”, Funded by Conexant Corporation