• Editor-in-Chief, IEEE Transactions on Communications (Jan 2016-present)

  • Guest Editor for a Special Issue of IEEE Wireless Communications Magazine on Non-Orthogonal Multiple Access (NOMA) for 5G, 2017

  • Guest Editor for a Special Issue of IEEE Access Journal on Non-Orthogonal Multiple Access (NOMA) for 5G, 2018

  • Area Editor (Wireless Communications), IEEE Transactions on Communications (October 2011- Dec 2015)

  • Technical Program Co-Chair, ISPLC'15

  • UT-Dallas Center for Systems, Communications, and Signal Processing

  • Editor (Wireless Communications), IEEE Transactions on Communications (2002-2011)

  • Editor, IEEE Transactions on Signal Processing (2000-2003)

  • Editor, IEEE Communications Letters (2000-2002)

  • Member of IEEE Signal Processing for Communication (SP4COM) Technical Committee from January 2002 to December 2007

  • Member of IEEE Signal Processing Theory and Methods (SPTM) Technical Committee from January 2005 to December 2010

  • Guest Editor for EURASIP Journal on Advances in Signal Processing October 2010 Special Issue on "Advances in Single Carrier Block Modulation with Frequency Domain Processing"

    (download CFP)

  • Lead Guest Editor for a special issue of IEEE JSTSP on DSP Techniques for Analog/RF Impairments, 2008

  • Member of Technical Program Committee for numerous IEEE Conferences including Globecom, ICC, Asilomar, ICASSP, ITW,SPAWC, ISSPIT, WCNC.

  • Guest Editor for IEEE Transactions on Signal Processing October 2002 Special Issue on "Signal Processing Techniques for Space-Time-Coded Transmissions"

    (download CFP)

  • Co-Chair of the Communication Theory Symposium at IEEE Globecom Conference in November 2004.

  • Tutorials Co-Chair for ICASSP'08 in Las Vegas.