Dr.  Smail  BACHIR
XLIM Laboratory,  France

Title: Peak Power Reduction for Multicarrier Systems

Abstract:

The request of the users in terms of rate, coverage and quality of service in wireless communication is growing exponentially, with increasing demand for electrical energy, to ensure networks link. In this context, new waveforms based on multicarrier modulation become widely popular and used intensively in recent radio communication architectures. Their properties in term of dynamic spectrum adjustment make OFDM (Orthogonal Frequency-Division Multiplexing) and derivatives modulation a promising technology for Cognitive Radio systems. However, these signals are sensitive to the power amplifier nonlinearities because of their high PAPR (Peak-to-Average Power Ratio). In literature, many PAPR reduction schemes have been developed and implemented in recent communication standard. The result is significant reduction of energy consumption in base station.

In this presentation, I will present recent results and challenges for the field of PAPR reduction for RF systems. I focused the presentation on recent evolution of methods based on optimization process like Tone Reservation and Coding Techniques.

Biography:

 Smail Bachir received his Master’s degree in Signal Theory and Systems from Polytechnic school of Algeria in 1997. He joined the scientific department of Leroy Somer Society and the University of Poitiers in France where he received his Ph.D. degree in Automatic and Electrical Engineering in 2002.

In 2002-2003, he held a postdoctoral position at the Automatic Control Laboratory (LAII), Poitiers, France. In 2003-2010, he was with the Department of Electronics and Electrostatics of the Angoulême Institute of Technology, becoming an Associate Professor in 2003, where he served as the Head of the Communication Department in 2014-2020.

Since 2010, he was with the Department of Smart Systems and Networks of XLIM Laboratory UMR CNRS 7252. He spent visiting periods at University of Saida (Algeria) and Pitesti (Roumania). In 2015, he received his habilitation to supervise research (HDR) of Poitiers University on Analysis tools, Modeling, and Control of radiocommunication circuits. He served on International Program Committees of the Int. Conf. on Elect. Eng. and Wireless Comm. (EEWC) and as an invited speacker in Plenary Lectures of International Conference on Electronics, Computers and Artificial Intelligence (ECAI). His primary research interests revolve around electronic devices and wireless circuits, signal processing, systems and control, modelling and parameter identification.

Smail Bachir is passionate about the development of control systems for RF front-end. He participates and supervises many industrial projects and he has contributed to developing products in aeronautics industry and satellite communication.