A Link Availability Model for the Railroad Satellite Channel

Scalise, Sandro; Lücke, Oliver; Torralbo, Elisabet Vilchez

doi:10.2514/6.2006-5345

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…In particular, the required antenna performance in Ku (10)(11)(12) and Ka (20-30 GHz) bands focuses the market opportunities of DVB-S2/RCS onto mobile terminals in collective transportation means. Actually, transport operators are starting to announce the provision of TV services in ships, trains, buses, and aircrafts, and broadband IP connectivity, for passengers.…”

Section: The Vision: a New Dvb-s2/rcs Standard For Mobile Collective ...mentioning

confidence: 99%

“…Finally, the considered receiving antennas are modelled with high directivity in order to achieve large gain and at the same time to reduce the received multipath components with large angular spread. Hence, as reported in [12], the key parameter becomes the antenna beamwidth which describes in the frequency domain the Doppler power spectrum density of the satellite fading channel. In this paper, the highly directive antennas are modelled with the reasonable value of the beamwidth in the order of 5 degrees.…”

Section: Modellingmentioning

confidence: 99%

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Advanced Fade Countermeasures for DVB-S2 Systems in Railway Scenarios

Cioni

Niebla

Seco-Granados

et al. 2007

J Wireless Com Network

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This paper deals with the analysis of advanced fade countermeasures for supporting DVB-S2 reception by mobile terminals mounted on high-speed trains. Recent market studies indicate this as a potential profitable market for satellite communications, provided that integration with wireless terrestrial networks can be implemented to bridge the satellite connectivity inside railway tunnels and large train stations. In turn, the satellite can typically offer the coverage of around 80% of the railway path with existing space infrastructure. This piece of work, representing the first step of a wider study, is focusing on the modifications which may be required in the DVB-S2 standard (to be employed in the forward link) in order to achieve reliable reception in a challenging environment such as the railway one. Modifications have been devised trying to minimize the impact on the existing air interface, standardized for fixed terminals.

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Section: The Vision: a New Dvb-s2/rcs Standard For Mobile Collective ...mentioning

confidence: 99%

Section: Modellingmentioning

confidence: 99%

Advanced Fade Countermeasures for DVB-S2 Systems in Railway Scenarios

Cioni

Niebla

Seco-Granados

et al. 2007

J Wireless Com Network

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“…In the railway environments, a highly directional terminal antenna must be considered to increase its directivity gain, and therefore the Doppler PSD function will be different from the Jakes shape. A revised model for high directive antenna has been recently presented in [9,10]. An example for the geometry of mobile directional antenna is depicted in Figure 2.…”

Section: Propagation Channelmentioning

confidence: 99%

Antenna diversity for DVB‐S2 mobile services in railway environments

Cioni

Corazza

Vanelli‐Coralli

2007

Satell Commun Network

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SUMMARYThis paper evaluates the applicability of the DVB-S2 standard in railway environments, where the most peculiar impairment is the periodic deep fading caused by power-supply arches distributed along the rail tracks. This effect induces a link loss every time the train antenna undergoes a power arch and cannot be counteracted with transmission power. Therefore, we propose and investigate the use of antenna diversity on the train. Simulation and semi-analytical results show that second-order diversity suffices to remove the packet error floor observed in the case of a single receiving antenna, thus enabling the application of DVB-S2 to this harsh environment.

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A Link Availability Model for the Railroad Satellite Channel

Cited by 2 publications

References 2 publications

Advanced Fade Countermeasures for DVB-S2 Systems in Railway Scenarios

Advanced Fade Countermeasures for DVB-S2 Systems in Railway Scenarios

Antenna diversity for DVB‐S2 mobile services in railway environments

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