Pre-detection Combining of Small Satellite Downlink's Replicas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F22%3A43967267" target="_blank" >RIV/49777513:23220/22:43967267 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9873068" target="_blank" >https://ieeexplore.ieee.org/document/9873068</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICECET55527.2022.9873068" target="_blank" >10.1109/ICECET55527.2022.9873068</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pre-detection Combining of Small Satellite Downlink's Replicas

Popis výsledku v původním jazyce

This study contributes to the reception quality improvement of small satellites&apos; signals. Traditionally, the data from a satellite is downloaded through single radio link to the related steerable ground station. This single communication is problematic as it is highly exposed to outages when the channel is deeply affecting the signal or when the steering engine fails. Instead, this paper proposes a terrestrial solution by combining multiple raw replicas of the same downlink received by separate multiple receiving sites. The individual stations are networked to collect multiple raw versions and send them to a virtual ground station for processing and combining. The suggested receive-diversity combining of the raw symbols is promising to improve the performance of the ground stations and reduce the probability of singular site failures. The proposed receive diversity scheme offers the replacement of the conventional expensive steerable antenna by much affordable omnidirectional antenna where the diversity gain compensates the lesser antenna gain. To achieve this diversity payoff, a simple yet efficient pre-detection combining algorithm is also developed in this article. The results show that the diversity mode, under different testing scenarios, can achieve lesser bit error rate (BER) than every other BER in the network. Furthermore, the cooperative reception scheme reduces system outages and exhibits to track more than a satellite at once.

Název v anglickém jazyce

Pre-detection Combining of Small Satellite Downlink's Replicas

Popis výsledku anglicky

This study contributes to the reception quality improvement of small satellites&apos; signals. Traditionally, the data from a satellite is downloaded through single radio link to the related steerable ground station. This single communication is problematic as it is highly exposed to outages when the channel is deeply affecting the signal or when the steering engine fails. Instead, this paper proposes a terrestrial solution by combining multiple raw replicas of the same downlink received by separate multiple receiving sites. The individual stations are networked to collect multiple raw versions and send them to a virtual ground station for processing and combining. The suggested receive-diversity combining of the raw symbols is promising to improve the performance of the ground stations and reduce the probability of singular site failures. The proposed receive diversity scheme offers the replacement of the conventional expensive steerable antenna by much affordable omnidirectional antenna where the diversity gain compensates the lesser antenna gain. To achieve this diversity payoff, a simple yet efficient pre-detection combining algorithm is also developed in this article. The results show that the diversity mode, under different testing scenarios, can achieve lesser bit error rate (BER) than every other BER in the network. Furthermore, the cooperative reception scheme reduces system outages and exhibits to track more than a satellite at once.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20202 - Communication engineering and systems

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2022 International Conference on Electrical, Computer and Energy Technologies (ICECET 2022) : /proceedings/

ISBN

978-1-66547-087-2

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

Piscataway

Místo konání akce

Praha, Czech republic

Datum konání akce

20. 7. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—