Dr. Roy T. Derryberry
University of North Texas
Electrical Engineering
(940) 369-8282
Email:

Education

PhD, Southern Methodist University, 1995.
Major: Electrical Engineering
Degree Specialization: Communications, Controls, and Signal/Image Processing
Dissertation Title: Adaptive Reference Correlation Subpixel Tracking
MS, University of Arkansas, 1987.
Major: Electrical Engineering
Degree Specialization: Theoretical Statistics Applications to Communications, Controls, Signal Processing
Dissertation Title: Optical Flow: An Alternate Approach to Motion Analysis
BS, University of Arkansas, 1985.
Major: Electrical Engineering
Degree Specialization: Signal Processing and Business

Professional Positions

Academic - Post-Secondary
Assistant Dean for Coporate Relations, University of North Texas. (2015 – Present).
Professional
Director of Engineering Operations, DBerry Enterprises. (2006 – Present).
Manager, BlackBerry. (2013 – 2014).
Senior Research Engineer, Principal Engineer, Research Manager, and Senior Manager, Nokia. (1998 – 2012).
Engineering Systems Analysist, Systems Engineer, and Senior Systems Engineer, Texas Instruments / Raytheon TI Systems. (1988 – 1998).

Licensures and Certifications

Registered Professional Engineer, Texas Board of Registration for Professional Engineers. (April 11, 1993 – March 31, 2024).

Professional Memberships

Institute of Electrical and Electronics Engineers. (January 1, 1987 – Present).

Teaching

Teaching Experience

University of North Texas
CSCE 4510, Introduction to Wireless Communications, 1 course.
CSCE 5510, Wireless Communication, 1 course.
EENG 2610, Circuit Analysis, 11 courses.
EENG 2620, Signals and Systems, 2 courses.
EENG 2710, Digital Logic Design, 9 courses.
EENG 4610, Digital Signal Processing, 1 course.
EENG 5520, Design and Testing of Digital Systems, 4 courses.
EENG 5610, Digital Signal Processing, 10 courses.
EENG 5630, Adaptive Signal Processing, 1 course.
EENG 5830, Coding Theory, 2 courses.

Teaching at Other Institutions

University of North Texas, Digital Signal Processing, EENG 5610, Spring 2017.

University of North Texas, Adaptive Signal Processing, EENG 5630, Fall 2016.

University of North Texas, Wireless Communications, CSCE 5510, Spring 2016.

Southern Methodist University, Network Analysis II, EE 2356, Spring 1988.

Southern Methodist University, Signals and Systems Analysis, EE 2370, Summer 1987.

Directed Student Learning

Other,"Formula SAE EV Battery System," Electrical Engineering. (September 2023 – Present).

Dissertation Committee Member,"Proposal," Electrical Engineering. (September 2023 – Present).

Other,"Underwater Robot," Electrical Engineering. (August 2022 – Present).

Other,"Unknown," Electrical Engineering. (August 2021 – Present).

Other,"NASA Mars Rover Challenge?," Mechanical and Energy Engineering. (January 2021 – Present).

Dissertation Committee Member,"Proposal," Electrical Engineering. (December 2023).

Dissertation Committee Member,"Proposal," Electrical Engineering. (December 1, 2023).

Dissertation Committee Member,"Dissertation Defense," Electrical Engineering. (February 2021 – November 2023).

Dissertation Committee Member,"Dissertation Defense," Electrical Engineering. (May 1, 2023).

Research

Published Intellectual Contributions

Conference Proceeding
Derryberry, R. T., Pi, Z. (2004). Overview and performance of the cdma2000 1xEV-DV enhanced reverse link. Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on. 839–843.
Raghothaman, B., Derryberry, R. T., Ionescu, M., Zhang, J. (2004). Systematic water-filling for turbo coded CDMA packet data transmission over MIMO channels. 3G Mobile Communication Technologies, 2004. 3G 2004. Fifth IEE International Conference on. 222–226.
Pi, Z., Derryberry, R. T. (2003). CDMA2000 1X EV-DV reverse link system design. Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE. 1, 514–519.
Ma, L., Rong, Z., Derryberry, R. T. (2003). Performance of cdma2000 1X EV-DV system. Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual. 2, 1163–1167.
LaRocque, D., Raghothaman, B., Derryberry, T., Fry, G. (2001). Techniques for efficient wireless communication systems modeling using C++. Communications, 2001. ICC 2001. IEEE International Conference on. 10, 3262–3264.
Raghothaman, B., Mandyam, G., Derryberry, R. T. (2000). Performance of closed loop transmit diversity with feedback delay. Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on. 1, 102–105.
Raghothaman, B., Derryberry, R. T., Mandyam, G. (2000). Transmit adaptive array without user-specific pilot for 3G CDMA. Acoustics, Speech, and Signal Processing, 2000. ICASSP’00. Proceedings. 2000 IEEE International Conference on. 5, 3009–3012.
Derryberry, R. T., Wong, T. F., Lehnert, J. S. (1998). An iterative blind adaptive receiver for DS-SSMA systems. Military Communications Conference, 1998. MILCOM 98. Proceedings., IEEE. 1, 160–164.
Journal Article
Derryberry, R. T. TITLE: 1xEV-DV Evaluation Methodology (V11) SOURCE.
Derryberry, R. T., Pi, Z. (2005). Reverse high-speed packet data physical layer enhancements in cdma2000 1$$ EV-DV. Other. 43(4), 41–47. IEEE.
Hsu, L., Derryberry, R. T., Pi, Z., Ilkka, N. (2004). 3G Evolution: cdma2000 1xEV-DV Forward and Reverse Links. Other.
Derryberry, R. T., Hsu, A., Tamminen, W. (2004). Overview of cdma2000 revision D. Other. 1–3.
Derryberry, R. T., Pi, Z. (2003). 1x Evolved high-speed integrated Data and Voice (1xEV-DV): Reverse Link Overview and Performance. Other. 13, .
Derryberry, T. R., Gray, S. D., Ionescu, M. D., Mandyam, G., Raghothaman, B. (2002). Transmit diversity in 3G CDMA systems. Other. 40(4), 68–75. IEEE.
Raghothaman, B., Derryberry, R. T., Ionescu, D. M. (2001). Closed Loop Transmit Diversity with Prediction. Other. IEEE.
Jensen, C. A., Derryberry, R. T. (1997). Autocode Generation for Use in a Rapid Prototyping Environment. Other.
Derryberry, R. T., Dunham, J. G. (1996). Search-Based Subpixel Tracking. Other.
Lindahl, C. E., Cockcroft, A., Derryberry, T., Sigler, J., Yablonski, M. (1990). Synthetic Multisensor Database Generation and Validation. Other. 1310, .
Other
Wang, Y., Derryberry, R. T. (2004). Adaptive spreading factor based on power control. Google Patents.
US Patent
Derryberry, R. T. (2014). Extended user input. Google Patents.
Derryberry, R. T., Hsu, L., Cheng, M. W. (2010). Method and apparatus for switching mobile station between autonomous and scheduled transmissions. Google Patents.
Toskala, A., Malkamaki, E., Hao, G., Rinne, M. J., Derryberry, R. T. (2009). Method and apparatus for distributed signaling for uplink rate control. Google Patents.
Derryberry, R. T., Boariu, A., Rong, Z. (2009). Efficient HARQ control and channel quality feedback reporting for multicarrier systems. Google Patents.
Derryberry, R. T., Rong, Z., Luukkanen, P. (2008). Apparatus and associated method, by which to facilitate scheduling of data communications in a radio communications system. Google Patents.
Tang, C. K., El-Rayes, M., Derryberry, R. T., Mandyam, G. D. (2006). Method and apparatus providing enhanced reservation access mode for a CDMA reverse channel. Google Patents.
Toskala, A., Malkamaki, E., Rinne, M. J., Virtanen, A., Hao, G., Derryberry, R. T. (2005). System and method for random access channel capture with automatic retransmission request. Google Patents.
Raghothaman, B., Derryberry, R. T. (2005). Apparatus, and associated method, for facilitating antenna weight selection utilizing deterministic perturbation gradient approximation. Google Patents.
Toskala, A., Malkamäki, E., Hao, G., Rinne, M. J., Derryberry, R. T. (2004). Two threshold uplink rate control to enable uplink scheduling. Google Patents.
Derryberry, R. T., Raghothaman, B. (2004). Adaptive antenna transmit array with reduced CDMA pilot channel set. Google Patents.
Wang, Y., Derryberry, R. T. (2004). Control based on adaptive spreading factor. Google Patents.
Wang, S., Derryberry, R. T. (2003). Method and apparatus for determining whether to employ an antenna array beamforming technique. Google Patents.
Derryberry, R. T., Gray, S. D., Rong, Z. (2002). Method and apparatus for power control on a common channel in a telecommunication system. Google Patents.
Wang, S., Derryberry, R. T. (2002). Method and apparatus for optimizing the usage of an antenna array beamforming technique. Google Patents.

Contracts, Grants and Sponsored Research

Grant - Research
Li, X. (Principal), Luyen, H. T. (Co-Principal), Huang, Y. (Co-Principal), Derryberry, R. T. (Supporting), "Empowering Directional Communications with Hybrid Beamforming and Deep Learning," Sponsored by Army Research Lab/Northeastern University, Federal, $1694437 Funded. (March 16, 2023 – March 15, 2024).

Service

University Service

Faculty Advisor, UNT UWRT University of North Texas Underwater Robotics Team. (September 1, 2022 – Present).

Member, Undergraduate Curriculum Committe. (August 2021 – Present).

Member, Undergraduate Curriculum Committe. (August 2020 – Present).

Chairperson, Academic Integrity. (September 16, 2022 – September 16, 2023).

Committee Member, EENG 2610 Textbook Slection. (September 1, 2021 – January 31, 2022).

Awards and Honors

Arkansas Academy of Electrical Engineering, Univeristy of Arkansas. (April 20, 2005 – Present).

IEEE Senior Member, IEEE. (December 31, 2002 – Present).