Raj Jain

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Raj Jain
Prof. Rajan Jain.
Born (1951-08-17) August 17, 1951 (age 65)
Satna, India
Citizenship American
Fields Computer science
Institutions Washington University in St. Louis
Ohio State University
Alma mater IISc, Harvard
Known for The Art of Performance Analysis
Notable awards CDAC-ACCS Foundation Award
ACM SIGCOMM Test of Time Award

Raj Jain (born 17 August 1951) is a professor of Computer Science and Engineering in the Washington University School of Engineering and Applied Science at Washington University in St. Louis, Missouri.


Until 2005 he was the Chief Technology Officer and Co-Founder of Nayna Networks, Inc. – a next generation telecommunications systems company in San Jose, CA. Prior to that he was a professor of Computer and Information Sciences at the Ohio State University in Columbus, Ohio and a Senior Consulting Engineer at Digital Equipment Corporation in Littleton, Massachusetts. He was also a visiting scientist at Massachusetts Institute of Technology in 1983, 1985, and 1987. He has been a professor at Washington University in St. Louis, Missouri since 2005.

Research Contributions[edit]

Dr. Jain is the co-inventor of the DEC-bit scheme for congestion avoidance in computer networks[1] which has been adapted for implementation in Frame Relay networks as forward explicit congestion notification (FECN), ATM Networks as Explicit Forward Congestion Indication (EFCI), and TCP/IP networks as Explicit Congestion Notification(ECN).

He is also the co-inventor of the Additive Increase Multiplicative Decrease (AIMD) principle used for traffic management in computer networks and Jain's fairness index.[2][3]

His work on timeout based congestion control influenced the design of the slow start algorithm in TCP/IP networks.[4] [5]


He is author of four books. His second book The Art of Computer Systems Performance Analysis published by Wiley Interscience won the 1991 Best Advanced How-to Book, Systems award from Computer Press Association.[6]


Dr. Jain obtained a Ph.D. in Applied Mathematics (Computer Science) from Harvard University, Cambridge, Massachusetts in 1978, an M.E. in Automation from Indian Institute of Science Bangalore, India in 1974, and a B.E. in Electrical Engineering from Awdhesh Pratap Singh University, Rewa, Madhya Pradesh, India in 1972.

External links[edit]