Design of an Adaptive Communication System for Implementation on Board a Future Algerian LEO Satellite

Abderrahmane, Lahcene Hadj; Hamed, D.E.B.; Benyettou, M.

doi:10.1109/aero.2008.4526354

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…2 The satellite channel model varies from different environments, which is beyond the scope of this paper. We just simplify it to be Rayleigh fading the same as some other literature, e.g., [52,53] concerning low earth orbit (LEO) satellite communications. 3 The superscript of † is used to specify corresponding notations for this scheme.…”

Section: Discussionmentioning

confidence: 99%

Individual secrecy of fading homogeneous multiple access wiretap channel with successive interference cancellation

Jiang

Jing

et al. 2017

J Wireless Com Network

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We investigate individual secrecy performance in a K-user quasi-static Rayleigh fading homogeneous multiple access wiretap channel (MAC-WT), where a legitimate receiver employs successive interference cancellation (SIC) decoding. We first evaluate individual secrecy performance under an arbitrary SIC order by deriving closed-form expressions with respect to secrecy outage probability and effective secrecy throughput (EST) as main metrics. The resulting closed-form expressions disclose a significant impact on the secrecy performance from the order of SIC decoding. Therefore, we propose three SIC decoding order scheduling schemes: (1) round-robin scheme, absolutely fair and served as a benchmark; (2) suboptimal scheme, based on each user's main channel condition; and (3) optimal scheme, based on each user's achievable secrecy rate. Comparison results show that the last two schemes outperform the first one with regard to both the EST and the multi-user diversity gain, whereas the performance of the suboptimal scheme is highly close to that of the optimal scheme which is usually impractical due to a requirement for the eavesdropper's channel state information (CSI).

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Section: Discussionmentioning

confidence: 99%

Individual secrecy of fading homogeneous multiple access wiretap channel with successive interference cancellation

Jiang

Jing

et al. 2017

J Wireless Com Network

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“…An ACM system for a future Algerian LEO microsatellite was designed using QAM modulation schemes and Rayleigh and Ricean channel models [12]. However, the study did not address how to measure the channel quality heuristics on-board the satellite.…”

Section: Prior Workmentioning

confidence: 99%

“…LA is used in a variety of terrestrial applications such as WiFi, land mobile communications, and cellular systems [3][4][5][6][7][8]. LA has also been used in satellite communications applications [9][10][11][12], evaluating the performance of an adaptive modulation system in the unique space-based propagation environment. However, these applications either present LA in a broadcasting system with no direct feedback to the ground station or do not consider shadowing effects.…”

Section: Motivationmentioning

confidence: 99%

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

Kilcoyne

Rowe

Headley

et al. 2016

2016 IEEE Aerospace Conference

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In Earth-to-Space communications, well-known propagation effects such as path loss and atmospheric loss can lead to fluctuations in the strength of the communications link between a satellite and its ground station. Additionally, a less-often considered effect of shadowing due to the geometry of the satellite and its solar panels can also lead to link degradation. As a result of these anticipated channel impairments, NASA communication links have been traditionally designed to handle the worst-case impact of these effects through high link margins and static, lower rate, modulation formats. This thesis first characterizes the propagation environment experienced by a software-defined radio on the NASA SCaN Testbed through a full link-budget analysis. Then, the following chapters propose, design, and model a link adaptation algorithm to provide an improved trade-off between data rate and link margin through varying the modulation format as the received signal-to-noise operate at the most robust transmitting configuration, ensuring a low error-rate. However, with this worst-case method, the trade-off manifests in the very constrained data rate-although the data is transmitted with minimal errors, the throughput also remains low. This thesis first outlines the propagation environment experienced by a communications signal originating in Cleveland, OH and traveling to a software-defined radio on the NASA SCaN Testbed. Then, a link adaptation algorithm is designed and simulated to provide an improved trade-off between data rate and bit error rate. This flexibility between transmitting configurations allows for communications to be more efficient, as the transmitter can adapt as the signal strength improves.

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Design of an Adaptive Communication System for Implementation on Board a Future Algerian LEO Satellite

Cited by 2 publications

References 6 publications

Individual secrecy of fading homogeneous multiple access wiretap channel with successive interference cancellation

Individual secrecy of fading homogeneous multiple access wiretap channel with successive interference cancellation

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

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