Clark School Home UMD
ECE

ECE News Story

Baras, Yu, Sadler issued patent for wireless communication authentication

Baras, Yu, Sadler issued patent for wireless communication authentication

Professor John Baras (ECE/ISR), his former student Paul Yu (EE Ph.D. 2008), and long-time collaborator Dr. Brian Sadler of the Army Research Laboratory were issued U.S. Patent 9,161,214 on Oct. 13, 2015.

The patent is for "Wireless communication method and system for transmission authentication at the physical layer." The invention is an authentication scheme encompassing a large family of authentication systems which may be built over existing transmission systems.

By superimposing a carefully designed secret modulation on the waveforms, authentication is added to the signal without requiring additional bandwidth. The authentication information (tag signal) is sent concurrently with data (message signal). The authentication is designed to be stealthy to the uninformed user, robust to interference, and secure for identity verification.

The tradeoffs between these three goals are identified and analyzed. The use of the authentication for channel estimation is also considered, and improved bit errors are demonstrated for time-varying channels. With a long enough authentication code word, an authentication system is achieved with very slight data degradation. Additionally, by treating the authentication tag as a sequence of pilot symbols, the data recovery may be improved by the aware receiver.

The three inventors also hold U.S. Patent 8,848,904 for "Method and implementation for information exchange using Markov models."

Related Articles:
Baras and Zhou issued U.S. Patent 7,827,459 for communications protocol
Alumna Mingyan Liu named ECE chair at University of Michigan
Aneesh Raghavan wins Ann G. Wylie Dissertation Fellowship
Vishnubhotla, Espy-Wilson granted patent for improving speech extraction
Alumnus Xiaobo Tan named Withrow Distinguished Scholar at Michigan State
Profile and interview with John Baras in IEEE Control Systems Magazine
Khaligh, Dusmex granted patent for plug-in electric vehicle powertrain system
John Baras named AIAA Associate Fellow
John Baras receives 2017 IEEE Simon Ramo Medal
John Baras receives AACC Richard E. Bellman Control Heritage Award

October 16, 2015


Prev   Next

Current Headlines

Alumnus Chakrabarti Named Distinguished Alumnus of IIT Kharagpur

‘Smart Marbles’ hold promise for better outcomes from bioreactors

Ulukus Named ECE Associate Chair for Graduate Studies

Alumnus Profile: Pratik Gupta

Semiconductor quantum transistor opens the door for photon-based computing

Remembering Marilyn Berman Pollans

Supporting Diversity in Engineering

Former postdoc Balakrishnan named Case Western dean of engineering

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar

Additional Resources

UM Newsdesk

Faculty Experts