[BSR14c] Reduction of PAPR and non-linearities effects, technical contribution report in the deliverable D3.3 - European ICT-318362 FP7 EMPhAtiC projectRapport du Laboratoire : Date de dépot: 2014/09/01, Nb pages 110,
Mots clés: FBMC-OQAM, HPA, PAPR, PMR
Résumé: Like other multicarrier modulation techniques, FBMC suffers from high peak-to-average power ratio (PAPR), impacting its performance in the presence of a nonlinear high power amplifier (HPA) in two ways. The first impact is an in-band distortion affecting the error rate performance of the link. The second impact is an out-of-band effect appearing as power spectral density (PSD) regrowth, making the coexistence between FBMC based broad-band Professional Mobile Radio (PMR) systems with existing narrowband systems difficult to achieve. This report addresses first the theoretical analysis of in-band HPA distortions in terms of Bit Error Rate. Also, the out-of band impact of HPA nonlinearities is studied in terms of PSD regrowth prediction. Furthermore, the problem of PAPR reduction is addressed along with some HPA linearization techniques and nonlinearity compensation approaches.