On the Outage Probability of Vehicular Communications at Intersections Over Nakagami-m Fading Channels

Belmekki, Baha Eddine Youcef; Hamza, Abdelkrim; Escrig, Benoît

doi:10.1109/vtc2020-spring48590.2020.9128618

Cited by 8 publications

(8 citation statements)

References 17 publications

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“…Millimeter wave (mmWave) frequencies enable high data rates and high-capacity communications [19]. Operating in the 30 GHz to 300 GHz range, mmWave frequencies are critical in supporting the increasing demand for bandwidth in modern wireless communication.…”

Section: Haps Frequency Bands 1) Radio Frequencymentioning

confidence: 99%

Cellular Network From the Sky: Toward People-Centered Smart Communities

Belmekki,

Aljohani,

Althubaity

et al. 2024

IEEE Open J. Commun. Soc.

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The concept of the smart city relies on connectivity and is expected to revolutionize urban living and create sustainable cities. However, while smart cities continue to evolve, small towns, suburbs, and villages lack basic communication infrastructure. This phenomenon exacerbates inequality and perpetuates a growing digital divide. Hence, it is imperative to also concentrate on these communities by designing strategies to extend essential services to them and drive the development of smart communities. High-altitude platform stations (HAPS) are a key enabling technology for such a concept. They fly in the stratosphere and offer extensive connectivity coverage, are cost-effective, and powered by solar energy and hydrogen. To demonstrate the potential of HAPS in enabling smart communities, the world's first-ever fifth-generation (5G) trial using HAPS was conducted. The experiment showed that HAPS provided high data rates and ubiquitous 5G coverage from the stratosphere in different scenarios. The main requirements of smart communities, such as ensuring equity and inclusion, intelligent transportation systems, and a blue economy were successfully addressed. We also highlight the main benefits of HAPS in enabling smart communities, as well as the involvement of communities in the co-design of such solutions. Finally, additional applications are presented, along with the main key enabling technologies.INDEX TERMS High-altitude platform stations, HAPS, smart cities, smart communities, 5G trial, nonterrestrial networks.

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Section: Haps Frequency Bands 1) Radio Frequencymentioning

confidence: 99%

Cellular Network From the Sky: Toward People-Centered Smart Communities

Belmekki,

Aljohani,

Althubaity

et al. 2024

IEEE Open J. Commun. Soc.

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“…T stands for the Gaussian noise with n k,j ∼ CN (0, N 0 ). In this work, we consider the typical Nakagami-m fading channel for vehicular communications [15], [16].…”

Section: A System Modelmentioning

confidence: 99%

Novel Power-Imbalanced Dense Codebooks for Reliable Multiplexing in Nakagami Channels

Gui,

Liu,

et al. 2024

IEEE Wireless Commun. Lett.

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This paper studies enhanced dense code multiple access (DCMA) system design for downlink transmission over the Nakagami-m fading channels. By studying the DCMA pairwise error probability (PEP) in a Nakagami-m channel, a novel design metric called minimum logarithmic sum distance (MLSD) is first derived. With respect to the proposed MLSD, we introduce a new family of power-imbalanced dense codebooks by deleting certain rows of a special non-unimodular circulant matrix. Simulation results demonstrate that our proposed dense codebooks lead to both larger minimum Euclidean distance and MLSD, thus yielding significant improvements of error performance over the existing sparse code multiple access and conventional unimodular DCMA schemes in Nakagami-m fading channels under different overloading factors.

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“…To the best of the author's knowledge of the existing work reported in the literature, the current work has following novelties: 1) Consideration of dynamic and suitable fading model for connected cars in 5G communications : The work reported in [13], [20], [21], [15] have been focused on the channel model up to Nakagami-m. However, in 5G and beyond communications, the 2x2 Nakagami-m fading was proposed in [22], [23]. The fading model is highly appropriate in vehicularto-vehicular, and vehicular-to-infrastructure communications.…”

Section: Motivations and Noveltymentioning

confidence: 99%

Anti-Eavesdropping for Connected Cars

Kavaiya¹,

Patel²

2022

Preprint

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Physical layer security (PLS) is an essential way to provide security to users in wireless networks against active or passive attacks. The quantification of the provided security is measured through secrecy outage probability and outage probability. For cognitive vehicular networks (CVN), PLS can increase the amount of the quality of services in infotainment applications. Due to the broadcast nature of the wireless channels, it is challenging to achieve the perfect secrecy between the transmitting and receiving nodes. Furthermore, in CVN, when resources are being shared in an underlay manner, the need arises to find the highest and lowest achievable quantification of performance measures for poor fading scenarios. The knowledge of the maximum achievable performance helps to design and develop the anti eavesdropping solutions. In a particular direction, firstly, this paper finds the closed-form expressions of first-order secrecy metrics over multiple input multiple output 2x2 Nakagami-m channel for vehicular networks. The derived closed-form expressions are further utilized to find the upper and lower bounds of secrecy outage probability, and outage probability using the integral bound method for CVN. The derived bound provides the knowledge of the region over a valid signal-to-noise ratio for which the maximum and minimum achievable performance can exist. To restrict the amount of eavesdropping, the convex optimization-based approach is proposed. The optimization method helps secrecy metrics to remain in a specific region of the value. Therefore, the work provides insights over the classical approach and the information-theoretic approach. These works enhance the knowledge to prepare the anti-eavesdropping methods for connected cars. Moreover, the derived analytical expressions demonstrate the impact of the wireless medium on secrecy performance while the derived bound demonstrates the impact of the magnitude of wireless fading parameters.

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On the Outage Probability of Vehicular Communications at Intersections Over Nakagami-m Fading Channels

Cited by 8 publications

References 17 publications

Cellular Network From the Sky: Toward People-Centered Smart Communities

Cellular Network From the Sky: Toward People-Centered Smart Communities

Novel Power-Imbalanced Dense Codebooks for Reliable Multiplexing in Nakagami Channels

Anti-Eavesdropping for Connected Cars

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