Bis zu 50 % günstiger als neu 3 Jahre rebuy Garantie Professionelles Refurbishment

Harnessing Disorder of Multimode Fibres to Achieve Information Security on the Physical Layer

Derzeit nicht verfügbar

Handgeprüfte Gebrauchtware

Bis zu 50 % günstiger als neu

Der Umwelt zuliebe

Harnessing Disorder of Multimode Fibres to Achieve Information Security on the Physical Layer

Stefan Rothe (Broschiert, Englisch)

Keine Bewertungen vorhanden

Optischer Zustand

Beschreibung

Digital communication has changed life considerably in a short time and has an impact on all domains . As a result , the risk of novel cyber attacks is increasing rapidly and requires new methods to ensure information security . In particular , optical communication networks have become a crucial environment , because they represent the backbone of the global digital infrastructure . Multimode fibres are a promising link type in this context , as its spatial paths can enhance network capacities significantly . This dissertation investigates an approach to achieve information-theoretic secure data exchange in optical multimode fibres by utilising physical effects in the fibre channel . The objective is for a transmitter ( Alice ) to exploit inherent disorder in multimode fibre to offer a legitimate message receiver ( Bob ) a decisive advantage over an eavesdropper ( Eve ). The clue relies on both modal crosstalk as well as mode-dependent loss that lead to an imbalance among distributed receivers on the fibre channel . Consequently , equalisation between Alice and Bob necessarily does not apply to Eve . This technique is called physical layer security and is experimentally implemented on a multimode fibre for the first time . By measuring the optical transmission matrix , Alice and Bob can characterise their channel for calibration and identify suitable spatial paths . For this purpose , both holographic methods and smart techniques based on neural networks are investigated and compared . By using the tranmsission matrix , Alice and Bob can determine an optical pre-distortion for controlling light propagation through the fibre and exchange information . In turn , Eve must process her channel mathematically . This asymmetry can provide benefit by implementation of sophisticated transmission strategies . Therefore , an attacking experiment was carried out in which Bob and Eve share 50 % each of the transmitted power of a 55-mode fibre . It is shown that through implementation of special channel coding an information-theoretic secure data exchange can be achieved in which 2 bit can be securely transmitted per channel use , although Eve has complete channel state information . Prospectively , the achievable information security could be further enhanced by investigating effects on induced mode mixing or time-varying transmission properties in the fibre channel . D-shaped fibres or external mechanical influences such as bending or twisting can introduce mode mixing or time variance . The results obtained in this dissertation demonstrate the experimental feasibility of physical layer security on a multimode fibre channel for the first time and provide a complement for secure data transmission in optical communication networks of future infrastructures that use spatial information paths. Weniger zeigen

Dieses Produkt haben wir gerade leider nicht auf Lager.

ab 39,99 €

Derzeit nicht verfügbar

Handgeprüfte Gebrauchtware

Bis zu 50 % günstiger als neu

Der Umwelt zuliebe

Produktinformationen

Technische Daten

Erscheinungsdatum

26.06.2023

Sprache

Englisch

Originalsprache

Englisch

EAN

9783844091236

Herausgeber

Shaker

Serien- oder Bandtitel

Dresdner Berichte zur Messsystemtechnik

Sonderedition

Nein

Autor

Stefan Rothe

Seitenanzahl

198

Auflage

Warnhinweise und Sicherheitsinformationen

Informationen nach EU Data Act

Bewertungen

-.-

Leider noch keine Bewertungen

Sicher bei rebuy kaufen

Schreib die erste Bewertung für dieses Produkt!

Wenn du eine Bewertung für dieses Produkt schreibst, hilfst du allen Kund:innen, die noch überlegen, ob sie das Produkt kaufen wollen. Vielen Dank, dass du mitmachst!