An Experimental Testbed for Implementation and Validation of Software defined FSO under Atmospheric Conditions using USRPs

Htay, Zun; Ghassemlooy, Zabih; Zvánovec, Stanislav; Abadi, Mojtaba Mansour; Burton, Andrew J.

doi:10.1109/csndsp54353.2022.9908057

Cited by 2 publications

(2 citation statements)

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“…For this testbed, the atmospheric scintillation data were obtained from the Radiosonde Observation databases combined with a statistical design approach and the cloud attenuation was introduced using Mie theory together with empirical Log-Normal modeling. A software-defined experimental testbed for analyzing the impact of various atmospheric conditions (mainly fog and turbulence induced attenuation and geometric losses) on the performance of medium-to-long FSO links was proposed in [143]. A hybrid FSO/RF testbed based on enhanced gated recurrent unit neural network channel prediction scheme to reduce the link switching frequency and link interruption duration was explored in [144].…”

Section: Advancement Of Experimental and Simulation Testbedsmentioning

confidence: 99%

Multi-Band Wireless Communication Networks: Fundamentals, Challenges, and Resource Allocation

Aboagye,

Amin Saeidi,

Tabassum

et al. 2024

IEEE Trans. Commun.

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The sub-6 GHz spectrum and the millimeter wave frequency band, with its huge spectrum, have been exploited in the past years to meet the traffic demands of wireless communication networks. However, the limited and licensed spectrum of these bands cannot support the massive connectivity requirements, the exponential growth of data traffic, and the strict quality-of-service requirements for 6G and beyond wireless systems. Extremely high frequencies, such as optical and terahertz, which offer much wider transmission bandwidths with extreme data rate capabilities, are expected to play key roles in the 6G and beyond era. As a result, futuregeneration wireless networks will transition from single-band and heterogeneous networks to multi-band networks (MBNs), where various frequency bands coexist. Despite the great potential of MBNs, they face novel challenges from channel modeling, transceiver and antenna design, programmable simulation platforms, standardization activities, and resource allocation. This paper provides a tutorial overview from the communication design perspective of the various frequency bands, elaborating on the above issues. Then, we introduce and examine typical MBN architectures for future networks and provide a detailed overview of state-of-the-art resource allocation problems for existing MBNs that typically operate on two frequency bands. The considered resource allocation optimization problems and solution techniques are discussed comprehensively. We then identify key performance metrics and constraint sets that should be considered for resource allocation optimization in future MBNs and provide numerical results to depict how various system parameters and user behaviors can influence their performance. Finally, we present several potential research issues as future work for the design and performance optimization of MBNs.

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Section: Advancement Of Experimental and Simulation Testbedsmentioning

confidence: 99%

Multi-Band Wireless Communication Networks: Fundamentals, Challenges, and Resource Allocation

Aboagye,

Amin Saeidi,

Tabassum

et al. 2024

IEEE Trans. Commun.

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“…FSO systems are prone to random channels, and hence, received power varies due to atmospheric conditions such as fog and turbulence losses [27]. In addition, other sources of randomness occur due to link geometry, such as pointing errors and geometric losses.…”

Section: Channelmentioning

confidence: 99%

Securing Non-Terrestrial FSO Link with Public Key Encryption Against Flying Object Attacks

Hicks,

Benkhelifa,

Ahmad

et al. 2023

Photonics

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Free Space Optical (FSO) communication has potential terrestrial and non-terrestrial applications. It allows large bandwidth for higher data transfer capacity. Due to its high directivity, it has a potential security advantage over traditional radio frequency (RF) communications. However, eavesdropping attacks are still possible in long non-terrestrial transmission FSO links, where the geometry of the link allows foreign flying objects such as Unmanned Aerial vehicles (UAVs) and drones to interrupt the links. This exposes non-terrestrial FSO links to adversary security attacks. Hence, data security techniques implementation is required to achieve immune FSO communication links. Unlike the commonly proposed physical layer security techniques, this paper presents a lab-based demonstration of a secured FSO communication link based on data cryptography using the GNU Radio platform and software-defined radio (SDR) hardware. The utilized encryption algorithm (Xsalsa20) in this paper requires high-time complexity to be broken by power-limited flying objects that interrupt the FSO beam. The results show that implementing cryptographic encryption techniques into FSO systems provided resilience against eavesdropping attacks and preserved data security. The experiment results show that, at a distance of 250 mm and laser output power of 10 mW, the system achieves a packet delivery rate of 92% and transmission rate of 10 Mbit/s. This is because the SDR used in this experiment requires a minimum received electrical amplitude of 27.5 mV to process the received signal. Long distance and higher data rates can be achieved using less sensitive SDR hardware.

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An Experimental Testbed for Implementation and Validation of Software defined FSO under Atmospheric Conditions using USRPs

Cited by 2 publications

References 0 publications

Multi-Band Wireless Communication Networks: Fundamentals, Challenges, and Resource Allocation

Multi-Band Wireless Communication Networks: Fundamentals, Challenges, and Resource Allocation

Securing Non-Terrestrial FSO Link with Public Key Encryption Against Flying Object Attacks

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