Multicarrier modulations have several advantages, allowing them to be adopted in a large number of communication systems; one of their drawbacks is that they are particularly affected by non-linear distortion, typical of power-constrained systems. Among several multicarrier communication systems, the single-carrier frequency division multiple access (SC-FDMA) is gaining an increasing interest in the satellite area due to its usage in the DVB-NGH, and the research efforts in DVB-TM-RCS2 and DVB-TM-S2. In this paper we consider the application of single-carrier frequency division multiple access (SC-FDMA) to satellite communications, by investigating the effect of different mapping schemes in terms of both in-band distortion and out-of-band spectral regrowth when a non-linear amplifier is present in the transmit equipment. The outcomes of this analysis demonstrate that a mapping based on Minimum Shift Keying (MSK) outperforms the conventional QPSK mapping in terms of resilience to non-linear distortion.
Robust SC-FDMA subcarrier mapping for non-linear channels / Candreva, Enzo Alberto; Tarchi, Daniele; Vanelli-Coralli, Alessandro; Corazza, Giovanni E.. - ELETTRONICO. - (2014), pp. 360-365. (Intervento presentato al convegno 2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) tenutosi a Livorno, Italy nel 8-10 Sept. 2014) [10.1109/ASMS-SPSC.2014.6934568].
Robust SC-FDMA subcarrier mapping for non-linear channels
CANDREVA, ENZO ALBERTO;TARCHI, DANIELE;VANELLI CORALLI, ALESSANDRO;CORAZZA, GIOVANNI EMANUELE
2014
Abstract
Multicarrier modulations have several advantages, allowing them to be adopted in a large number of communication systems; one of their drawbacks is that they are particularly affected by non-linear distortion, typical of power-constrained systems. Among several multicarrier communication systems, the single-carrier frequency division multiple access (SC-FDMA) is gaining an increasing interest in the satellite area due to its usage in the DVB-NGH, and the research efforts in DVB-TM-RCS2 and DVB-TM-S2. In this paper we consider the application of single-carrier frequency division multiple access (SC-FDMA) to satellite communications, by investigating the effect of different mapping schemes in terms of both in-band distortion and out-of-band spectral regrowth when a non-linear amplifier is present in the transmit equipment. The outcomes of this analysis demonstrate that a mapping based on Minimum Shift Keying (MSK) outperforms the conventional QPSK mapping in terms of resilience to non-linear distortion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
