B. P. Lathi holds a PhD in Electrical Engineering from Stanford University and was previously a Professor of Electrical Engineering at California State University, Sacramento. He is the author of eight books, including Signal Processing and Linear Systems (second ed., 2005) and, with Zhi Ding, Modern Digital and Analog Communications Systems (fourth ed., 2009). Roger A. Green is an Associate Professor of Electrical and Computer Engineering at North Dakota State University.
He holds a PhD from the University of Wyoming. He is a contributor to the second edition of Signal Processing and Linear Systems by B. P. Lathi.