Section: New Results

Activities on waveform design for telecommunications

Peak to Average Power Ratio (PAPR), Orthogonal Frequency Division Multiplexing (OFDM), Generalized Waveforms for Multi Carrier (GWMC)

Characterizing multi-carrier waveform systems with optimum PAPR

Participant : Rémi Gribonval.

Main collaboration: Marwa Chafii, Jacques Palicot, Carlos Bader (Equipe SCEE, Supelec, Rennes)

In the context of the TEPN (Towards Energy Proportional Networks) Comin Labs project (see Section  9.1.1.2 ), in collaboration with the SCEE team at Supelec (thesis of Marwa Chafii co-supervised by R. Gribonval), we investigated a problem related to dictionary design: the characterization of waveforms with low Peak to Average Power Ratio (PAPR) for wireless communications. This is motivated by the importance of a low PAPR for energy-efficient transmission systems. A first stage of the work consisted in characterizing the statistical distribution of the PAPR for a general family of multi-carrier systems, leading to a journal paper [77] and several conference communications [75] , [76] . The work this year concentrated on characterizing waveforms with optimum PAPR [30] , [48] .