Two novel schemes to compensate HPA non-linearity on the FBMC/OQAM signal

High Power Amplifier (HPA) non-linearity has received utmost attention in the current study of MultiCarrier Modulation (MCMs) systems (Orthogonal Frequency Division Multiplexing (OFDM), and Filter Bank Multicarrier Modulations/Offset Quadrature Amplitude Modulations (FBMC/OQAM)) characterized by a high Peak to Average Power Ratio (PAPR). With high PAPR, an MCM signal suffers from distortions when it is amplified with a non-linear HPA. The linearization and the PAPR reduction approaches were separately proposed to deal with the effects of HPA non-linearity and moderate the expensive cost of high performance linear HPA. To date, research has not considered the idea of combining both approaches for the FBMC/OQAM system. In this paper, we propose and compare two schemes based on the joint use of the PAPR reduction and the linearization process, for both the OFDM and FBMC/OQAM systems. Numerical results showed that the two suggested combinations of the Tone Reservation (TR) PAPR reduction scheme and the Neural Networks Predistortion(NNPD) schemes outperform the separate use of TR and NNPD for both OFDM and FBMC/OQAM systems.

[1]  Daniel Roviras,et al.  Adaptive Predistortions Based on Neural Networks Associated with Levenberg-Marquardt Algorithm for Satellite Down Links , 2008, EURASIP J. Wirel. Commun. Netw..

[2]  C. Rapp,et al.  Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System. , 1991 .

[3]  Thorsten Wild,et al.  Waveform contenders for 5G — OFDM vs. FBMC vs. UFMC , 2014, 2014 6th International Symposium on Communications, Control and Signal Processing (ISCCSP).

[4]  Daniel Roviras,et al.  Reducing the PAPR in FBMC-OQAM systems with low-latency trellis-based SLM technique , 2016, EURASIP J. Adv. Signal Process..

[5]  M. Brandon.  Optimisation conjointe de méthodes de linéarisation de l'émetteur pour des modulations multi-porteuses , 2012 .

[6]  Behrouz Farhang-Boroujeny,et al.  Cosine Modulated and Offset QAM Filter Bank Multicarrier Techniques: A Continuous-Time Prospect , 2010, EURASIP J. Adv. Signal Process..

[7]  Geneviève Baudoin,et al.  Filter Lookup Table Method for Power Amplifier Linearization , 2007, IEEE Transactions on Vehicular Technology.

[8]  Daniel Roviras,et al.  Theoretical analysis of BER performance of nonlinearly amplified FBMC/OQAM and OFDM signals , 2014, EURASIP J. Adv. Signal Process..

[9]  Yves Louet,et al.  Joint study of PAPR reduction and digital predistortion , 2011, 2011 XXXth URSI General Assembly and Scientific Symposium.

[10]  Ridha Bouallegue,et al.  A new tone reservation scheme for PAPR reduction in FBMC/OQAM systems , 2015, 2015 International Wireless Communications and Mobile Computing Conference (IWCMC).

[11]  Maurice G. Bellanger,et al.  Specification and design of a prototype filter for filter bank based multicarrier transmission , 2001, 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221).

[12]  Daniel Roviras,et al.  Adaptive Predistortion Techniques for Non-Linearly Amplified FBMC-OQAM Signals , 2014, 2014 IEEE 79th Vehicular Technology Conference (VTC Spring).

[13]  T.J. Brazil,et al.  An adaptive Volterra predistorter for the linearization of RF high power amplifiers , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[14]  Behrouz Farhang-Boroujeny,et al.  OFDM Versus Filter Bank Multicarrier , 2011, IEEE Signal Processing Magazine.