Performance Analysis of Cooperative Aerial Base Station-Assisted Networks With Non-Orthogonal Multiple Access

Wang, Xianling; Zhang, Haijun; Kim, Kyeong Jin; Tian, Yue; Nallanathan, Arumugam

doi:10.1109/twc.2019.2941199

Cited by 11 publications

(11 citation statements)

References 35 publications

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“…The radio signal attenuation follows LoS propagation with a lower path-loss exponent and Nakagami-m small-scale fading for the aerial-terrestrial link, and the receive side signalto-noise ratio (SNR) ρH P,q follows gamma distributions [54]. According to (5), θ P,q is defined as ρD −α L P,q m P,q .…”

Section: B Outage Probability Of the Usersmentioning

confidence: 99%

Stochastic Geometry-Based Analysis of Cache-Enabled Hybrid Satellite-Aerial-Terrestrial Networks With Non-Orthogonal Multiple Access

Zhang

et al. 2022

IEEE Trans. Wireless Commun.

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Due to the emergence of non-terrestrial platforms with extensive coverage, flexible deployment, and reconfigurable characteristics, the hybrid satellite-aerial-terrestrial networks (HSATNs) can accommodate a great variety of wireless access services in different applications. To effectively reduce the transmission latency and facilitate the frequent update of files with improved spectrum efficiency, we investigate the performance of cache-enabled HSATN, where the user retrieves the required content files from the cache-enabled aerial relay or the satellite with the non-orthogonal multiple access (NOMA) scheme. If the required content files of the user are cached in the aerial relay, the cache-enabled relay would serve directly. Otherwise, the user would retrieve the content file from the satellite system, where the satellite system seeks opportunities for proactive content pushing to the relay during the user content delivery phase. Specifically, taking into account the uncertainty of the number and location of aerial relays, along with the channel fading of terrestrial users, the outage probability and hit probability of the considered network are, respectively, derived based on stochastic geometry. Numerical results unveil the effectiveness of the cache-enabled HSATN with the NOMA scheme and proclaim the influence of key factors on the system performance. The realistic, tractable, and expandable framework, as well as associated methodology, provide both useful guidance and a solid foundation for evolved networks with advanced configurations in the performance of cache-enabled HSATN.

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Section: B Outage Probability Of the Usersmentioning

confidence: 99%

Stochastic Geometry-Based Analysis of Cache-Enabled Hybrid Satellite-Aerial-Terrestrial Networks With Non-Orthogonal Multiple Access

Zhang

et al. 2022

IEEE Trans. Wireless Commun.

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“…Although UAVs' communications may be under the effects of propagation blockage due to dense buildings in urban areas [109], a strong possibility of environment-induced lineof-sight (LoS) propagation makes the channels of UAVs' communications different from the terrestrial channels [110]. In ATG channels, due to the high vertical coordinate of the MBS, a higher likelihood of LoS propagation 1 can be exploited to improve the MBS-UAV links [111].…”

Section: ) Uav Channel and Transmissionmentioning

confidence: 99%

UAV caching in 6G networks: A Survey on models, techniques, and applications

Duong

Kim

Kaleem

et al. 2022

Physical Communication

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“…Hou et al [28] investigated a multi-antenna UAV communication scenario with downlink NOMA and derived the analytical outage probability by a stochastic geometry approach. Wang et al [29] assumed a multi-node AtG cooperative NOMA network to analyze the system outage performance. Li et al [30] considered a dual-UAV-enabled NOMA relaying system and analyzed the uplink, downlink and overall outage probabilities, respectively.…”

Section: B Related Workmentioning

confidence: 99%

“…Li et al [30] considered a dual-UAV-enabled NOMA relaying system and analyzed the uplink, downlink and overall outage probabilities, respectively. Except for [30], the backhaul links are not considered in [25]- [29]. Moreover, all the works in [25]- [30] assume a pre-defined resource allocation scheme without resource optimization, which in fact increases the impact of the co-channel interference on the system reliability and reduces the resource utilization, since the co-channel interference can be mitigated by careful resource optimization [31], [32].…”

Section: B Related Workmentioning

confidence: 99%

UAV-Enabled Reliable Mobile Relaying Based on Downlink NOMA

Wang

Chen

et al. 2020

IEEE Access

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Unmanned aerial vehicle (UAV) relaying is an efficient solution to provide wireless access for emergency communications due to the high flexibility. The system reliability is usually constrained under limited bandwidth and power resources. Downlink non-orthogonal multiple access (NOMA) can improve the system reliability through a higher resource utilization. To this end, we introduce downlink NOMA to a UAV-enabled mobile relaying system and investigate a scenario where a fixed-wing UAV flies in a circular trajectory to serve as a mobile decode-and-forward (DF) relay in an emergency situation. Since guaranteeing a reliable link is necessary in an emergency situation, our formulated problem is to minimize the maximum outage probability among all links, taking into account the bandwidth and power allocations based on downlink NOMA. Specially, the condition for successful successive interference cancellation (SIC) is also considered. By making change of variables and introducing slack variables, we reformulate our problem into a more tractable form, then we propose an iteration algorithm to solve our problem based on the successive convex optimization (SCO) technique. The optimized bandwidth and power allocation schemes as well as the min-max outage probability along the UAV trajectory are obtained, respectively. Two benchmarks are designed to reveal the performance of our proposed algorithm, and the reliability gain can be obtained by comparing the min-max outage probability and the overall average outage probability. INDEX TERMS UAV, mobile relaying, downlink NOMA, outage probability, resource allocation. I. INTRODUCTION A. BACKGROUND AND MOTIVATION

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Performance Analysis of Cooperative Aerial Base Station-Assisted Networks With Non-Orthogonal Multiple Access

Cited by 11 publications

References 35 publications

Stochastic Geometry-Based Analysis of Cache-Enabled Hybrid Satellite-Aerial-Terrestrial Networks With Non-Orthogonal Multiple Access

Stochastic Geometry-Based Analysis of Cache-Enabled Hybrid Satellite-Aerial-Terrestrial Networks With Non-Orthogonal Multiple Access

UAV caching in 6G networks: A Survey on models, techniques, and applications

UAV-Enabled Reliable Mobile Relaying Based on Downlink NOMA

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