P Mohana Shankar

Departmental website



P. M. Shankar received his Bachelors and Masters degrees in Physics from Kerala University (India), Masters in Applied Optics and Ph. D. in Electrical Engineering from the Indian Institute of Technology, Delhi. After spending some time at the University of Sydney, Australia as a visiting scholar, he joined Drexel in 1982. He has developed several graduate and undergraduate courses in the area of fiberoptic communications and an undergraduate course in wireless communications. He was the recipient of the 2005-2006 Christian R. and Mary F. Lindback Foundation Award for Distinguished Teaching in the University.

Dr. Shankar has put together new MS programs in Telecommunications Engineering (ECE department), and in Software Engineering (a joint program of the Colleges of Engineering, Arts & Sciences and Information Science and Technology). He also developed a BS in Software Engineering program, jointly with the College of Information Science and Technology and the Department of Mathematics and Computer Sciences. In addition, he setup a practical training program for all MS students in the College of Engineering (Career Integrated Education). He also set up the on-line MSEE program in the ECE department. He served as the Assistant Department and Graduate Advisor (ECE Department) from 1993 to 1997 & 1999 to 2004, the Director of Graduate Programs (COE) from 1996 to 2000 and Interim Department Head (ECE) from 2006 to 2007. He is an author of two books, Introduction to Wireless Systems, John Wiley & Sons, 2001 and  Fading and Shadowing in Wireless Systems, Springer, 2012. The Second Edition of Fading and Shadowing in Wireless Systems has been published in 2017.

Detailed bio with publications  Shankar_ResumeDec2017

DIFFERENTIAL EQUATIONS: A Problem Solving Approach Based on Matlab®


P.  M.  Shankar

Faculty and instructors interesting in accessing the solutions to the exercises may contact Professor Shankar at shankapm@drexel.edu to get the password to access the solutions posted at http://pmshankar.ece.drexel.edu/differential-equations-a-problem-solving-approach-based-on-matlab/

Course related demos are given below


Fiber Optics

Transcendental Equation for LP modes





Wireless Communications



 Probability and Random variables

  • pdf_CDF properties


  • Pedagogy of transformation of random variables






Linear Algebra

  • Cramer’s Rule


  • Generalized eigenvectors


  • Method of Least Squares


The following document contains the m file (offered as is) embedded as a .pdf document displaying the example and how to run the file.  If anyone uses the m file or modifies it, the user is required to acknowledge/cite this website and the manuscript

P. M. Shankar, “Pedagogy of solutions to a set of linear equations using a Matlab workbook,” Computer Applications in Engineering Education, Vol. 25, No. 3, pp. 345-351, March 2017. DOI: 10.1002/cae.21803


  • System of Equations, rref, Solutions, etc.



Differential Equations


  • Stability and Equilibrium



  • Second Order Differential Equations