Advanced techniques for spectrally efficient DVB‐S2X systems. (7th September 2015)

• Record Type: Journal Article
• Authors: Ugolini, Alessandro; Modenini, Andrea; Colavolpe, Giulio; Mignone, Vittoria; Morello, Alberto
• Other Names: Scalise Sandro guestEditor.; Vanelli‐Coralli Alessandro guestEditor.; Ginesi Alberto guestEditor.; Mignolo Domenico guestEditor.; Luise Marco guestEditor.; Titomanlio Sabino guestEditor.
• Is Part Of: International journal of satellite communications and networking. Volume 34:Number 5(2016:Sep./Oct.)
• Page Start: 609
• Page End: 623
• Publication Date: 2015-09-07
• Subjects: DVB‐S2X -- satellite channel -- satellite detection -- faster‐than‐Nyquist -- time packing -- constellationoptimization; Artificial satellites in telecommunication -- Periodicals; Digital communications -- Periodicals; 621.3825
• DOI: 10.1002/sat.1140
• Languages: English
• ISSNs: 1542-0973

Abstract

Summary: We investigate different techniques to improve the spectral efficiency of systems based on the DVB‐S2 standard, when the transmitted signal bandwidth cannot be increased because it has already been optimized to the maximum value allowed by transponder filters. We will investigate and compare several techniques involving different sections of the transceiver scheme. The techniques that will be considered include the use of advanced detection algorithms, the adoption of time packing, and the optimization of the constellation and shaping pulses. The low‐density parity‐check codes recently proposed for the evolution of the DVB‐S2 standard will be considered, as well as the adoption of iterative detection and decoding. Information‐theoretical analysis will be followed by the study of practical modulation and coding schemes. Copyright © 2015 John Wiley & Sons, Ltd. Abstract : We investigate different techniques to improve the spectral efficiency of systems based on the DVB‐S2 standard. We analyze and compare several techniques involving different sections of the transceiver scheme, including the use of advanced detection algorithms, the adoption of time packing, and the optimization of the constellation and shaping pulses. We adopt the low‐density parity‐check codes recently proposed for the DVB‐S2X standard, together with iterative detection and decoding. Information‐theoretical analysis is followed by the study of practical modulation and coding formats.