Andrei Grebennikov is a Member of the Technical Staff at Bell Laboratories, Alcatel-Lucent, in Ireland. His responsibilities include the design and development of advanced highly efficient and linear transmitter architectures for base station cellular applications. He has taught at the University of Linz in Austria, the Institute of Microelectronics in Singapore, and the Moscow Technical University of Communications and Informatics. He has written over eighty scientific papers, has written four books, and is a Senior Member of IEEE.