2019/02/08 by Amin Farajzadeh, Farajzadeh, Amin, Özgür Erçetin +3
Engineering · #Advanced Wireless Communication Technologies #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Networking and Internet Architecture (cs.NI) #UAV Applications and Optimization
paper · pdf · doi:10.48550/arxiv.1902.03061
openalex publication_date 2019/02/08 · openalex created_date 2022/07/29 · openalex updated_date 2026/07/28
The recent evolution of ambient backscattering technology has the potential\nto provide long-range and low-power wireless communications. In this work, we\nstudy the unmanned aerial vehicle (UAV)-assisted backscatter networks where the\nUAV acts both as a mobile power transmitter and as an information collector. We\naim to maximize the number of successfully decoded bits in the uplink while\nminimizing the UAV's flight time by optimizing its altitude. Power-domain NOMA\nscheme is employed in the uplink. An optimization framework is presented to\nidentify the trade-off between numerous network parameters, such as UAV's\naltitude, number of backscatter devices, and backscatter coefficients.\nNumerical results show that an optimal altitude is computable for various\nnetwork setups and that the impact of backscattering reflection coefficients on\nthe maximum network throughput is significant. Based on this optimal altitude,\nwe also show that an optimal trajectory plan is achievable.\n