Editor (Wireless Communications), IEEE Transactions on Communications (2002-present)

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 since January 2005

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)

Invited reviewer for NSF proposal panel reviews.

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

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