Compensating the High Power Amplifier Nonlinearity for a DVB-S2 System

Esteban Gabriel Cabanillas (1, 2, 3) , Didier Lohy (1) , Cyril Lahuec (2, 3) , Michel Jezequel (2, 3)

1 NXP Semiconductors
2 ELEC - Département Electronique
3 Lab-STICC_TB_CACS_IAS

This paper deals with the compensation of High Power Amplifier induced nonlinear Inter-Symbol Interference (NISI) in a DVB-S2 receiver. The Volterra Canceller is an optimal technique if NISI is perfectly estimated. To reach this ideal case, a linearization of the received signal can be done before memory effects appears. In this work, this is achieved using a Laguerre polynomial linearizer. Computer simulations show that this combination reduces the average number of LDPC iterations thanks to an SNR improvement of 0.16 dB compare to a simple Volterra Canceller without significant added complexity.

Mots clés: Satellite communication; Nonlinarity compensation

Domaines: Electronique

Esteban Gabriel Cabanillas, Didier Lohy, Cyril Lahuec, Michel Jezequel. Compensating the High Power Amplifier Nonlinearity for a DVB-S2 System. NEWCAS 2012 : IEEE 10th International conference on New Circuits and Systems, Jun 2012, Montréal, Canada. pp.1-4. ⟨hal-00725538⟩