Intelligent Reflecting Surfaces vs. Full-Duplex Relays: A Comparison in the Air
Ding Qian, Jie Yang, Yang Luo, Chunbo Luo
Abstract
This letter aims to provide a fundamental analytical comparison for the two major types of relaying methods: intelligent reflecting surfaces and full-duplex relays, particularly focusing on unmanned aerial vehicle communication scenarios. Both amplify-and-forward and decode-and-forward relaying schemes are included in the comparison. In addition, optimal 3D UAV deployment and minimum transmit power under the quality of service constraint are derived. Our numerical results show that IRSs of medium size exhibit comparable performance to AF relays, meanwhile outperforming DF relays under extremely large surface size and high data rates.
Topics & Concepts
Computer scienceSoftware deploymentTransmitter power outputConstraint (computer-aided design)Duplex (building)Quality of serviceRelayComputer networkReal-time computingPower (physics)EngineeringTransmitterPhysicsBiologyChannel (broadcasting)DNAGeneticsQuantum mechanicsOperating systemMechanical engineeringAdvanced Wireless Communication TechnologiesUAV Applications and OptimizationWireless Communication Security Techniques