DVB‐S2X physical layer performance results over realistic channel models

Self Cite

The need for improving the achievable performance of Digital Video Broadcasting via Satellite Second Generation (DVB-S2) for different applications has resulted in an extension of the DVB-S2 standard targeting the main satellite markets, that is, direct-to-home, professional links and very small aperture terminal, as well as emerging markets such as mobile services.In this paper, we present potential system performance improvements that can be achieved by deploying the techniques available from DVB-S2 Extension in satellite broadcast (direct-to-home profile) as well as broadband networks (very small aperture terminal scenario). It is shown that the combination of DVB-S2 Extension features offer significant advances and opportunities to service providers, particularly in emerging satellite systems such as multi-beam Ka-band broadband as well as broadcasting satellite networks.

Section: Performance Of Dvb‐s2x Over Next Generation Multi‐beam Broadmentioning

confidence: 99%

DVB‐S2X system performance results for broadcast and unicast broadband networks

Angelone

Alagha

Arapoglou

et al. 2016

Self Cite

“…Nevertheless, the studies that have brought to the development of DVB‐S2X have evidenced the benefits offered by more advanced equalisers, allowing broadcasters more freedom to optimise the transmission to a higher symbol rate. Computer simulations on a realistic channel model , including IMUX and OMUX satellite filters (corresponding to a 38 MHz‐3 dB bandwidth and channel spacing of 40 MHz) and a faithful travelling wave tube amplifiers non‐linear model (including both amplitude and phase distortions), this model, also incorporating an element of adjacent channel interference in both the uplink and downlink paths and using free symbol rate optimisation with adaptive equalisation (in enhanced receivers), demonstrated spectral efficiency gains of around 7% to 9% over conventional receivers .…”

Section: Modifications To the Physical Layermentioning

confidence: 99%

“…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. The novel very low signal‐to‐noise ratio (VL‐SNR) frames for use in noise‐compromised environments are described in .…”

Section: Introductionmentioning

confidence: 99%

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.

“…The DVB‐S2X physical layer performance over realistic channel models is discussed in , where particular emphasis is devoted to the maximization of the spectral efficiency as a function of the transmission symbol rate and in combination with the roll‐off factor of the pulse‐shaping filter, in the presence of state‐of‐the‐art modulation and demodulation techniques.…”

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.