Erasure Broadcast Channels With Intermittent Feedback

Vahid, Alireza; Lin, Shih‐Chun; Wang, I-Hsiang

doi:10.1109/tcomm.2021.3102648

Cited by 11 publications

(2 citation statements)

References 33 publications

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“…With respect to retaining the quality of the received signal at each device in a dedicated group of devices, the UAV communicates to two ground single-antenna NOMA devices, i.e., U 1 and U 2 , in spectrum sharing scenario with the PN and 3 As a future direction, it would be interesting to see how the results change when the perfect CSI assumption is replaced with delayed [24,25], local [26,27,28], and intermittent [29] knowledge. 4 It is worth noting that we focus on the performance analysis of a dedicated device group within an IoT system, which would work with a small coverage area.…”

Section: B Motivations and Our Contributionsmentioning

confidence: 99%

Antenna Selection and Device Grouping for Spectrum-Efficient UAV-Assisted IoT Systems

Vahid

et al. 2023

IEEE Internet Things J.

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Unmanned Aerial Vehicle (UAV)-assisted Internet of Things (IoT) systems have been implemented for over a decade, from transportation to military surveillance, and is proven worthy of integration in the next generation of wireless protocols. Though UAVs have immense potential, they have major drawbacks when it comes to real-world implementation, such as energy capacity, loss of signal quality, and spectrum limitations. To overcome these challenges, integration of UAVs with spectrum-efficient techniques including cognitive radio (CR) and non-orthogonal multiple access (NOMA) has been proposed. In this paper, we incorporate transmit-antenna selection (TAS) into an underlay CRNOMA network, which provides additional benefits through employing multiple-antenna-selection approach at the UAV with the goal of better serving the ground NOMA devices. The links associated with the multi-antenna UAV are theoretically assumed to experience Nakagami-m fading distribution. We also emphasize the degraded performance caused by imperfect successive interference cancellation (SIC) when decoding signals at the ground NOMA devices. The closed-form expressions for the proposed model are derived to evaluate two main performance metrics, namely the outage probability and the ergodic capacity. Monte-Carlo simulations are performed to analyze the performance of the system in different scenarios. We observe that the power allocation factors for the devices in a group and the altitude of UAV have a noticeable impact on the performance of the system. Furthermore, the increase in the number of antennas at the UAV can complement these effects and further improve the system performance.

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Section: B Motivations and Our Contributionsmentioning

confidence: 99%

Antenna Selection and Device Grouping for Spectrum-Efficient UAV-Assisted IoT Systems

Vahid

et al. 2023

IEEE Internet Things J.

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“…It is a new hotspot of information theory research and has attracted the high attention and extensive research of scholars in the corresponding fields. In the past decade, the research field of network coding theory and its application has become more and more extensive, which has prompted researchers to use new mathematical tools (mainly algebra, matroid theory, graph theory, geometry, combinatorial mathematics and optimization theory) to study current network coding: extensive and complex mathematical models [11][12]. In addition, network coding is closely related to information theory and is dominated by information theory.…”

Section: Network Coding Principlementioning

confidence: 99%

Data Transmission Security Module of Distributed System Based on Network Coding

2020

DPS

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Distributed storage systems often use replica mechanism to achieve redundancy, which often leads to large storage overhead and repair bandwidth overhead. In order to improve the overall performance of the system, network coding is introduced into the distributed storage system. This paper mainly studies the design of data transmission security module of distributed system based on network coding. This paper first analyzes the principle of network coding, and compares the transmission modes between butterfly network model and routing. Aiming at the problem of large amount of data encryption in distributed file system, this paper studies the encryption mechanism of HDFS system based on network coding, proposes a lightweight encryption mechanism, and carries out simulation experiments.

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Harnessing Random Receiver Cache in Erasure Interference Channels with Feedback

Vahid

2021

2021 IEEE Global Communications Conference (GLOBECOM)

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Erasure Broadcast Channels With Intermittent Feedback

Cited by 11 publications

References 33 publications

Antenna Selection and Device Grouping for Spectrum-Efficient UAV-Assisted IoT Systems

Antenna Selection and Device Grouping for Spectrum-Efficient UAV-Assisted IoT Systems

Data Transmission Security Module of Distributed System Based on Network Coding

Harnessing Random Receiver Cache in Erasure Interference Channels with Feedback

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