Naofal Al-Dhahir

Professor - Electrical Engineering
Jonsson School Distinguished Professor
Tags: Electrical Engineering Computer Engineering

Professional Preparation

Ph.D. - Electrical Engineering
Stanford University - 1994
MSc. - Electrical Engineering
Stanford University - 1990

Research Areas

Research Interests
  • Signal Processing Algorithms for Digital Communications Systems
  • Digital Baseband Compensation for RF/Analog Circuit Impairments
  • Broadband Wireless Communications (WiFi, WiMAX, LTE,DVB-H)
  • Detection and Cancellation of Narrow-band Interference in OFDM
  • Digital Subscriber Line Technology (ADSL,SHDSL,VDSL)
  • Space-Time Coding and Signal Processing/MIMO Systems
  • Compressive Sensing Applications in Broadband Communications
  • Receiver Design under High Mobility (Doppler mitigation)
  • Relay Communications
  • Satellite Communications (LEOs, GPS, Ka-Band)
  • Sparse Equalization of Wireless and Wireline Channels
  • Multi-Carrier Modulation (OFDM, DMT)

Publications

M. Awadin, A. Gomaa, and N. Al-Dhahir, OFDM AF Relaying Under I/Q Imbalance: Performance Analysis and Baseband Compensation , in IEEE Transactions on Communications, 2013 2013 - Publication
H. Soy, O. Ozdemir, M. Bayrak, R. Hamila, and N. Al-Dhahir, Decentralized Multiuser Diversity with Opportunistic Packet Transmission in MIMO Wireless Sensor Networks , in International Journal of Electronics and Communications, 2013 2013 - Publication
O. Ozdemir, R. Hamila, and N. Al-Dhahir, I/Q Imbalance in Multiple Beamforming OFDM Transceivers : SINR Analysis and Digital Baseband Compensation , in IEEE Transactions on Communications, May 2013 2013 - Publication
J. Lee and N. Al-Dhahir, Exploiting Sparsity for Multiple Relay Selection with Relay Gain Control in Large AF Relay Networks , in IEEE Wireless Communications Letters, 2013 2013 - Publication
Y. Chi, A. Gomaa, N. Al-Dhahir, and A.R. Calderbank, Training Signal Design and Tradeoffs for Spectrally-Efficient Multi-User MIMO-OFDM Systems , in IEEE Transactions on Wireless Communications, July 2011   2011 - Publication
P. Rabiei, W. Namgoong, N. Al-Dhahir On the Performance of OFDM-Based Amplify-and-Forward Relay Networks in the Presence of Phase Noise in IEEE Transactions on Communications, May 2011   2011 - Publication
H. Eghbali, H. Muhaidat, N. Al-Dhahir A Novel Receiver Design for Single-Carrier Frequency Domain Equalization in Broadband Wireless Networks with Amplify-and-Forward Relaying , in IEEE Transactions on Wireless Communications, March 2011   2011 - Publication
A. Gomaa, and N. Al-Dhahir, A New Design Framework for Sparse FIR MIMO Equalizers , in IEEE Transactions on Communications, August 2011   2011 - Publication
A. Gomaa, N. Al-Dhahir, A Sparsity-Aware Approach for NBI Estimation in MIMO-OFDM , in IEEE Transactions on Wireless Communications, June 2011   2011 - Publication
K.M. Zahidul Islam, T. Al-Naffouri, N. Al-Dhahir On Pilot Design for Comb-Type OFDM Transmission Over Doubly-Selective Channels , in IEEE Transactions on Communications, April 2011. 2011 - Publication

Appointments

Full Professor (tenured)
University of Texas at Dallas [2007–Present]
Associate Professor (tenured)
University of Texas at Dallas [2003–2007]
Principal member of the technical staff
AT&T Shannon Laboratory [8–7]
Member of the technical staff
Corporate R&D Center, General Electric Company [8–7]
Instructor
Stanford University [1–4]
Research Assistant
Stanford University [1–7]

Additional Information

Patents
  1. N. Al-Dhahir, G. Saulnier, and J. Hershey, Method and Apparatus for Performing Power Control Using the Wideband Overlay Synchronization Channel". U.S. Patent no. 5,708,966 issued on January 13th, 1998.
  2. N. Al-Dhahir, J. Hershey, and G. Saulnier, Spacecraft Communication Channel Power Control System". U.S. Patent no. 5,828,335 issued on October 27th, 1998.
  3. J. Hershey, I. Ali, N. Al-Dhahir, G. Saulnier, and R. Nelson, Method and Apparatus for Doppler Based Multiple Access Communications Control", U.S. Patent no. 5,926,467 issued on July 20th; 1999.
  4. N. Al-Dhahir, J. Hershey, N. Vanstralen, R. Frey, M. Grabb, Method and apparatus for filtering digital television signals", U.S. Patent no. 6,122,015 issued on September 19th, 2000.
  5. R. Korkosz, W. McKinney, B. Schings, J. Ross, N. Al-Dhahir, H. Tomlinson, C.M. Puckette, J. Hershey, Telemetry of Diagnostic Messages from a Mobile Asset to a Remote Station", U.S. Patent no. 6,262,659, July 17th, 2001.
  6. F. Ross, J. Hershey, R. Korkosz, N. Al-Dhahir, System and Method for Directing an Adaptive Antenna Array", U.S. Patent no. 6,275,187, August 14th, 2001.
  7. R. Frey, N. Al-Dhahir, M. Grabb, F. Ross, J. Hershey, N. Van Stralen, System and Method for Mitigating Multipath Effects in Television Systems", U.S. Patent no. 6,304,299 B1, October 16th, 2001
  8. F. Ross, J. Hershey, R. Korkosz, N. Al-Dhahir, W. McKinney, and B. Schings, System and Method for Directing an Adaptive Antenna Array", U.S. Patent no. 6,426,720B1 , July , 2002.
  9. K. Maalouf, J. Ashe, and N. Al-Dhahir,A GPS Receiver Interference Nuller with No Satellite Signal Distortion". US Patent no. 6,480,151 issued on November 12th, 2002.
  10. J. Hershey, F. Ross, N. Al-Dhahir, M. Grabb, M. Hartman, R. Fery, J. Esposito, R. LaRosa, Spread Spectrum Communications with Selectable Data Transfer Rates", U.S. Patent no. 6,542,536, April 2003. Page 2 of 5
  11. N. Van Stralen, N. Andrew, R. Korkosz, G. Saulnier, J. Hershey, N. Al-Dhahir, Scalable Spread-Spectrum Signal Detection and Acquisition Processor", U.S. Patent no. 6,621,855, September 2003
  12. J. Hershey, R. Korkosz, G. Saulnier, N. Al-Dhahir, Identification of an identifiable code sequence in a received signal by correlation with summed different-phase replicas of the sequence", U.S. Patent no. 6,668,012, December 2003
  13. R. Korkosz, J. Hershey, W. McKinney, B. Schings, H. Tomlinson, C. Puckette, N. Al-Dhahir, J. Ross,"Telemetry of diagnostic messages from a mobile asset to a remote station", U.S. Patent no. 6,781,513, August 2004
  14. N. Al-Dhahir and A.H.Sayed, Finite-Length Equalization over Multi-Input Multi-Output Channels". U.S. Patent no. 6,870,882, March 2005
  15. R. Gauss and N. Al-Dhahir, "Adaptive Digital Beamformer Coefficient Processor for Satellite Signal Interference Reduction" , U.S. Patent no. 6,885,338, April 2005
  16. N. Al-Dhahir, C. Fragouli, and W. Turin, "Training-Based Channel Estimation for Multiple Antennas", U.S. Patent no. 6,959,047, October 2005
  17. N. Al-Dhahir, "Method and Apparatus for designing nite-length multi-input multi-output channel shortening pre-filters", U.S. Patent no. 7,027,536, April 2006
  18. N. Al-Dhahir, "Frequency-domain Method for joint equalization and decoding of space-time block codes", U.S. Patent no. 7,092,450, August 15, 2006
  19. N. Al-Dhahir, S. Diggavi, A. Stamoulis, "Amelioration in Inter-Carrier Interference in OFDM", US Patent no. 7,130,355, October 2006
  20. N. Al-Dhahir, C. Fragouli, and W. Turin, "Creating Training Sequences for Space-Time Diversity Arrangements", US Patent no. 7,154,964, December 2006
  21. N. Al-Dhahir, S. Diggavi, A. Stamoulis, "Estimation of a Frequency-Selective Channel in a MIMO Environment with Parameters that Vary within a Transmission Block", US Patent no. 7,173,975, February 2007
  22. N. Al-Dhahir, "Frequency-Domain Method for Joint Equalization and Decoding of Space-Time Block Codes", US Patent no. 7,173,976  February 2007
  23. N. Al-Dhahir, "Frequency-Domain Method for Joint Equalization and Decoding of Space-Time Block Codes", US Patent no. 7,379,508B1, May 2008
  24. N. Al-Dhahir and A. Sayed, "Finite-Length Equalization over Multi-Input Multi-Output (MIMO) Channels", US Patent no. 7,433,402 , October 2008
  25. N. Al-Dhahir, S. Diggavi, and A. Stamoulis, "Method for communicating via a channel characterized by parameters that vary in time within a transmission block", US Patent no. 7,450,656, November 2008
  26. N. Al-Dhahir, "Frequency-Domain Method for Joint Equalization and Decoding of Space-Time Block Codes",US Patent no. 7,583,748, September 2009
  27. N. Al-Dhahir and A.H. Sayed, "Finite-Length Equalization over Multi-Input Multi-Output Channels", U.S. Patent no. 7,586,984, September 2009
  28. N. Al-Dhahir, C. Fragouli, W. Turin, Creating Training Sequences for Space-Time Diversity Arrangements, US Patent no. 7,668,225, February 2010

News Articles

IEEE names UT Dallas Prof Al-Dhahir Fellow; Work Used in DSL, Digital TV, Wireless Internet
Professor Naofal Al-Dhahir has been named an IEEE fellow, one of the highest honors bestowed by the Institute of Electrical and Electronics Engineers.
  
The honor, for “contributions to high data-rate communication over broadband channels,” recognizes Al-Dhahir for a large body of work that includes an important component of the high-speed DSL Internet technology used by millions of people around the world.
UTD Researcher Receives NSF Funding
RICHARDSON, Texas (Sept. 21, 2005) — An electrical engineering professor at The University of Texas at Dallas (UTD), in collaboration with and a researcher from Princeton University, has been awarded a National Science Foundation (NSF) grant to investigate the value of algebraic signal structures in the cross–layer design of multiple–antenna wireless communication systems. 

Dr. Naofal Al–Dhahir, an associate professor in UTD’s Erik Jonsson School of Engineering and Computer Science will work with Dr. Robert Calderbank, who holds a joint appointment as a professor with Princeton’s departments of mathematics and electrical engineering, to demonstrate how algebraic signal structures make it possible to integrate different multiple–antenna system functions efficiently at an end–to–end complexity equal to that of the single–antenna systems used today.
UTD Professor Wins IEEE Best Journal Paper Award
Naofal Al-Dhahir, an associate professor of electrical engineering in the Erik Jonsson School of Engineering and Computer Science at The University of Texas at Dallas (UTD), has been named a co-recipient of the prestigious Donald G. Fink Prize Paper Award for 2006 by the Institute of Electrical and Electronics Engineers (IEEE).

The award is given for the most outstanding survey review or tutorial paper published in IEEE transactions, journals or magazines, or in proceedings of the IEEE. Established in 1979, it is named in honor of Donald G. Fink, a distinguished editor and author who was the first general manager and executive director of the IEEE.  The Fink award is the only IEEE-wide journal best paper award; all other paper awards are at the technical society level.
UTD Professor, Student Win ‘Best Paper’ Award at International Conference
An electrical engineering professor and a Ph.D. student at The University of Texas at Dallas (UTD) together won the “Best Paper” award at the 2005 Institute of Electrical and Electronics Engineers (IEEE) Vehicular Technology Conference recently held in Dallas. 

Dr. Naofal Al–Dhahir, an associate professor, and Sushanta Das are part of the electrical engineering department in UTD’s Erik Jonsson School of Engineering and Computer Science. They are co-authors of the paper with Dr. Robert Calderbank of Princeton University and Dr. Suhas Diggavi of Ecole Polytechnique Fédérale de Lausanne in Switzerland.
UTD Professor Receives NSF Grant to Study New Broadband Wireless Technologies
RICHARDSON, Texas (Sept. 9, 2004) — An electrical engineering professor at The University of Texas at Dallas (UTD) has been awarded a National Science Foundation (NSF) grant to investigate new methods for broadband multimedia wireless communications. 

Dr. Naofal Al-Dhahir, an associate professor in UTD’s Erik Jonsson School of Engineering and Computer Science, received the award, which covers a four-year period and is worth $250,000, from the NSF’s division of Computing and Communication Foundations (CCF).

Activities

Professional Activities :
  1. Lead Guest Editor for a special issue of IEEE journal of selected topics in signal processing on DSP Techniques for RF/Analog Circuit Impairments scheduled for publication in 2009.
  2. Editor for IEEE Transactions on Communications March 2002 - present
  3. Editor for IEEE Transactions on Signal Processing October 2000 - October 2003
  4. Editor for IEEE Communications Letters October 2000 - October 2002
  5. Elected Member to the IEEE Signal Processing for Communications Technical Committee (SP4COM) January 2002 to December 2007.
  6. Elected Member to the IEEE Signal Processing Theory and Methods Technical Committee (SPTM) from January 2005-present.
  7. Tutorials Co-Chair at ICASSP'08 in Las Vegas.
  8. Technical committee member for IEEE ICASSP and SPAWC from 2002 to present.
  9. Guest Editor for a special issue of IEEE Transactions on Signal Processing on Signal Processing Techniques for Space-Time-Coded Transmissions scheduled for publication on October 2002
  10. Co-Chair of the Communication Theory Symposium at IEEE Globecom'04 Conference in Dallas, Texas, December 2004.
  11. Presented a tutorial at ICECS'03 entitled "Space-Time Coding and Signal Processing for Next-Generation Wireless Communications", December 2003.
  12. Presented an invited tutorial at PIMRC'02 entitled "Space-Time Signal Processing".
  13. Invited plenary speaker to the IEEE CAS Workshop on Wireless Communications and Networking, Notre Dame, August 2001
SCIENTIFIC AND PROFESSIONAL SOCIETIES OF WHICH A MEMBER
  1. IEEE Fellow
  2. IEEE Signal Processing Society
  3. IEEE Communications Society
  4. IEEE Information Theory Society

Funding

- Research In Motion [2018–2018]
- Advanced Receiver Technologies Inc. [2018–2018]