New DVB‐S2X constellations for improved performance on the satellite channel

Self Cite

SUMMARYAfter 10 years of successful deployment, the second-generation satellite standard for digital video broadcasting, DVB-S2, has recently been updated. Very low signal-to-noise ratio modes to better support mobile and very small terminal applications are part of the new standard without changing its fundamental structure. This paper provides a high-level discussion on several of the most important aspects pertaining to the new very low signal-to-noise ratio modulation and coding modes of the updated standard.

Section: Vl‐snr Pl Frame Synchronizationmentioning

confidence: 99%

Modulation, coding, and synchronization for mobile and very small satellite terminals, as part of the updated DVB‐S2 standard

Lee

Eroz

Becker

2015

Self Cite

“…In addition, the new DVB‐S2X specification introduces additional linear MODCODs (indicated by an '‐L' suffix in the MODCOD name), which have been optimised for a linear channel in the presence of phase‐noise. These bring mixed values of gain, in some cases up to about 1 dB better SNR for the same spectral efficiency, when the transponder is operated quasi‐linearly .…”

Section: Modifications To the Physical Layermentioning

confidence: 99%

“…Thus, the overall end‐to‐end link can be considered quasi‐linear (this assumption is applicable for more than three carriers per HPA, the dual carriers per HPA case being more borderline). The new DVB‐S2X Linear MODCODs bring mixed values of gain, in some cases up to about 1 dB better SNR for the same spectral efficiency .…”

Section: Modifications To the Physical Layermentioning

confidence: 99%

“…These are then extensively described in the other papers of this special issue of the journal. In details, in , the new DVB‐S2X constellations for improved performance on the satellite channel are presented. In , the design of an efficient transceiver scheme for DVB‐S2X systems is addressed, while in shows results of the DVB‐S2X physical layer performance over realistic channel models.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

DVB‐S2X: extending DVB‐S2 flexibility for core markets and new applications

Morello

Mignone

2015

Digital Video Broadcasting-Satellite-Second Generation (DVB-S2) has been specified about 10 years ago, with a strong focus on Direct-to-Home, but interactive broadband applications (forward link), digital satellite news gathering and other professional links such as internet trunking were included. Since then, new requirements have come up, including extended efficiency and flexibility in the core applications of DVB-S2, with specific focus on ultra-high-definition television delivery to the home, using High Efficiency Video Coding, the new video coding technique jointly developed by ITU and MPEG, and new ones for emerging markets. DVB-S2X provides the necessary technical specifications for covering traditional DVB-S2 use cases and new ones for operating at very low signal-to-noise ratio down to À10 dB, such as mobile services for business jets, fast trains and boats, and low aperture terminals for journalists. This paper and the others in this special issue describe the details of the standard and its performance in the various application scenarios.

“…In , the new DVB‐S2X constellations for improved performance on the satellite channel are presented. While DVB‐S2 considered amplitude phase shift keying (APSK) constellations with ring ratios optimized for the linear AWGN channel, S2X focused on a more realistic non‐linear channel model, which reflects the behaviour of modern linearized traveling wave tube amplifiers.…”

Section: The Special Issuementioning

confidence: 99%

DVB‐S2X: the new extensions to the second generation DVB satellite standard DVB‐S2

Morello

Mignone

2015

BACKGROUNDIn September 1993, the Digital Video Broadcasting (DVB) project was launched, with the purpose of promoting the switchover from analogue to digital television (TV) broadcasting. It was a private, market-driven association, including all the main actors in digital TV such as broadcasters, network operators, manufacturers and regulators.Thanks to the achievements in the field of digital VLSI technology, both in the transmission and in the source coding areas, the first milestone of the DVB project was the specification of DVB-S. This was DVB's digital, multi-programme, TV system for satellite broadcasting that together with the adoption of MPEG2, introduced satellite direct-to-home (DTH) digital TV.With the worldwide success of this system, it became clear that it could also be suitable for digital satellite news gathering (DSNG) applications, with significant advantages in cost, performance and flexibility over the previous systems. In the summer of 1997, the DVB Project decided to start the development of a new specification for DSNG, based on the DVB-S system but with a number of new features added to cover the commercial and operational requirements of contribution applications. At the same time, DVB-S became the basis of the so called 'DVB family', on which the first generation digital standards for cable (DVB-C) and terrestrial (DVB-T) broadcasting were built.In 2003, 10 years after the standardization of DVB-S, DVB-S2 [1] was the first physical layer system of a new generation of digital standards to be developed in the DVB family. It set the benchmark for technical excellence, drove the design concepts for terrestrial and cable applications and along with MPEG4, led the way for introduction of high-definition TV services. However, DVB-S2 was no longer only a system for DTH broadcasting, but one for interactivity (i.e. internet access) and professional services (e.g. TV contribution links and DSNG) as well. To be able to cover all the application areas, while still keeping the single-chip decoder at reasonable complexity levels, DVB-S2 was structured as a toolkit, thus enabling the use of mass market products for professional or niche applications.In 2013, 10 years after the development of DVB-S2, following a request by the Commercial and Technical Modules, the DVB-S2 group started to analyse a further evolution of satellite technologies to enhance performance in the core markets (DTH, contribution, Very Small Aperture Terminal (VSAT) and DSNG) and to increase the range of applications of the standard to cover emerging markets such as mobile (air, sea and rail) or professional applications. DVB-S2X: THE DVB-S2 EXTENSIONSThe DVB-S2X [2] is an extension of the DVB-S2 specification that provides additional technologies and features for the core applications of DVB-S2 including DTH, contribution, VSAT and DSNG. The specification also provides an extended operational range to cover emerging markets such as mobile applications.