Impact of Proactive Retransmissions on Forward TCP Throughput over DVB-S/S2 Railroad Satellite Links with Power Arches

Açar, Güray; Evans, B.G.

doi:10.1109/asms.2008.12

Cited by 3 publications

(1 citation statement)

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“…The mitigation envisaged in DVB-RCS + M dictates transmitting each TCP segment twice at a certain retransmission delay. The simulations carried out in [51] with various TCP variants and train speeds demonstrated that the best performance was observed for TCP selective acknowledgement with the delayed acknowledgment option active. Retransmission delay values of 10 and 40 ms were considered with three and five duplicate acknowledgment options [7].…”

Section: Fade Mitigation Techniques Against Diffraction Because Of Pomentioning

confidence: 99%

Railway satellite channel at Ku band and above: Composite dynamic modeling for the design of fade mitigation techniques

Arapoglou

Liolis

Panagopoulos

2011

Satell Commun Network

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SUMMARYPast studies on the railway satellite channel (RSC) at Ku band and above consider exclusively the attenuation coming from the metal power arches (PAs) along the railway route, producing significant though deterministic periodical fast fading. Nevertheless, limited attention has been given to model tropospheric effects on the RSC. The present paper takes a more comprehensive view of the RSC by introducing a novel stochastic dynamic model of rain fading in mobile satellite systems on top of the diffraction because of PAs. The proposed approach builds upon well-established research on rain attenuation time series synthesizers employing stochastic differential equations. It is shown that this propagation tool may provide significant aid, in general, in mobile satellite system simulations and in the design of fade mitigation techniques (FMTs), particularly aiming at the railway scenario. The tool enables the generation of fade events, fade duration statistics, rain attenuation power spectrum and predicting the necessary FMT control loop margin. This is particularly useful for the RSC because most of the proposed FMTs focusing on PAs are not appropriate for compensating atmospheric fading.

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Section: Fade Mitigation Techniques Against Diffraction Because Of Pomentioning

confidence: 99%