Adaptive Coding and Modulation for the DVB-S2 Standard Interactive Applications: Capacity Assessment and Key System Issues

Alberty, Eric; Defever, S.; Moreau, C.; Gaudenzi, R. De; Ginesi, S.; Rinaldo, Rita; Gallinaro, G.; Vernucci, A.

doi:10.1109/mwc.2007.4300985

Cited by 37 publications

(37 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the same figure, depicted is also the capacity penalty due to the suboptimal 4+12+20+28-APSK signal constellation setting if the minimum Euclidean distance maximization results ( 2 =2.73, 3 =4.52 and 4 =6.31 [Benedetto et al, 2005]) are instead taken into account. These results refer to the high SNR asymptotic case and so they are not optimized over the whole SNR range for each given spectral efficiency R. The latter statement is also illustrated in Fig.…”

Section: Numerical Results For 64-apskmentioning

confidence: 99%

“…Recent trends in satellite communications show an increasing demand to replace or complement conventional modulation schemes, such as Quaternary Phase Shift Keying (QPSK), with higher-order M-ary modulation schemes. Some contributing factors that enable such trends are as follows [Alberty et al, 2007;Benedetto et al, 2005;Rinaldo & De Gaudenzi, 2004a;Rinaldo & De Gaudenzi, 2004b]:…”

Section: Introductionmentioning

confidence: 99%

“…More recently, there has also been an increasing commercial interest to go beyond the standardized 16-and 32-APSK modes especially in professional applications such as Digital Satellite News Gathering (DSNG) where even higher requirements in terms of available SNR apply. Thus, design optimization for 64-APSK modulation has been addressed in [Liolis & Alagha, 2008;Benedetto et al, 2005]. The reported results particularly in [Benedetto et al, 2005] were obtained as part of the ESA project "Modem for High Order Modulation Schemes" whose technical baseline has been recently proposed as potential standard for space telemetry related applications [CCSDS, 2007].…”

mentioning

confidence: 99%

“…Thus, design optimization for 64-APSK modulation has been addressed in [Liolis & Alagha, 2008;Benedetto et al, 2005]. The reported results particularly in [Benedetto et al, 2005] were obtained as part of the ESA project "Modem for High Order Modulation Schemes" whose technical baseline has been recently proposed as potential standard for space telemetry related applications [CCSDS, 2007]. The APSK constellation design approaches considered in [De Gaudenzi et al, 2006a;De Gaudenzi et al, 2006b;Liolis & Alagha, 2008] follow two main optimization criteria: (i) maximization of the minimum Euclidean distance, and (ii) maximization of the channel mutual information.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting

Liolis¹,

Gaudenzi²,

Alagha³

et al. 2010

Digital Video

View full text Add to dashboard Cite

Section: Numerical Results For 64-apskmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting

Liolis¹,

Gaudenzi²,

Alagha³

et al. 2010

Digital Video

View full text Add to dashboard Cite

“…This design produces complex modulation/coding schemes because of the frequent switchover of modulation and code rate [3,4]. The novel method requires, as the current ACM techniques, a fixed transmitter power, but larger than that adopted in clear-sky conditions, and, differently than traditional ACM, a variable symbol rate (which can incorporate a variable symbol rate due to the source of information or coding, besides that due to A(t)), which translates, proportionally, into a variable symbol rate for QPSK.…”

Section: Power and Bandwidthmentioning

confidence: 99%

A method to achieve clear-sky data-volume download in satellite links affected by tropospheric attenuation

Matricciani

2015

Int. J. Satell. Commun. Network.

View full text Add to dashboard Cite

SUMMARYFor data downloading from satellites, the traditional approach of considering the complementary probability distribution, P(A trop ) of the total tropospheric attenuation A trop (dB), at a frequency, polarization, and elevation angle, may be too pessimistic, and it may lead to large overdesign. If the data volume downloaded in a given observation time T obs (a day, a week, a month, etc.), with a constant probability of symbol error, is more valuable than the instantaneous symbol, or bit rate (as it may be the case in Earth resources observation or in other services that allow long delays in communicating data), another approach can avoid overdesign, namely the various adaptive coding and modulation techniques. We study a particular time integral of A trop (t): (i) to define the average efficiency of a radio channel faded by the troposphere and (ii) to design a method that can theoretically achieve the same volume of data downloaded in clear-sky conditions (no troposphere), even if the radio link is faded by the troposphere. The average efficiency and its bounds can be calculated from the complementary probability distribution of A trop (t). We explicitly apply the theory to radio links faded by rain, by using the experimental rain-attenuation time series measured with satellite ITALSAT in a 37.8°slant path, at 18.7, 39.6, and 49.5 GHz at Spino d'Adda (Italy), and to those simulated with the synthetic storm technique. Based on the average efficiency, we define the method that can achieve in T obs , theoretically, the same data volume as in clear sky, directly applicable to quadrature phase-shift keying, multiple phase-shift keying, and Shannon capacity theorem. The method requires a fixed increase in power margin, and bandwidth, compared with clear-sky conditions, and delivers an average symbol rate equal to the maximum symbol rate obtainable when A trop (t) = 0. The method can also be used in terrestrial links at any frequency. We compare its theoretical performance with the traditional adaptive coding and modulation techniques and show that, even theoretically, these techniques cannot achieve unitary efficiency as, on the contrary, the novel method can do. Real-time satellite communications at frequencies above 10 GHz are characterized with the long-term probability distribution, P(A trop ), of total tropospheric attenuation A trop (dB) (a combination of attenuation due to rain, hail, snow, mist, water vapor, clouds, and oxygen), at a frequency, polarization, and elevation angle. This P(A trop ) refers to an average year, or to a shorter observation period, T obs , for example, a month, and is useful to calculate link budget and to assess link availability. The same approach holds for second-order statistics, such as fade duration and time derivative of fade (rate of change), which describe fading dynamics, especially with regard to rain attenuation, the most rapidly changing and less predictable tropospheric fade in slant paths. Fade duration statistics give information on the duration of continuous out...

show abstract

Smart gateways for terabit/s satellite

Jeannin

Castanet

Radzik

et al. 2014

Satell Commun Network

View full text Add to dashboard Cite

SUMMARY To reach the terabit per second of throughput, telecommunication satellites cannot make use of frequency below Ka band only. Therefore, the use of broad portion of the spectrum available at Q/V (40/50 GHz) band is foreseen for the feeder link. This study presents the evaluation of performances of different macro‐diversity schemes that may allow mitigating the deep fades experienced at Q/V bands by introducing cooperation and a limited redundancy between the different gateways of the system. Two different solutions are firstly described. The performances resulting from the use of those assumptions are derived in a second stage. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

Adaptive Coding and Modulation for the DVB-S2 Standard Interactive Applications: Capacity Assessment and Key System Issues

Cited by 37 publications

References 4 publications

Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting

Amplitude Phase Shift Keying Constellation Design and its Applications to Satellite Digital Video Broadcasting

A method to achieve clear-sky data-volume download in satellite links affected by tropospheric attenuation

Smart gateways for terabit/s satellite

Contact Info

Product

Resources

About