2018/09/08 by Mohammad Vahid Jamali, Jamali, Mohammad Vahid, Seyed Mohammad Azimi‐Abarghouyi +3
Engineering · #Advanced Wireless Communication Technologies #FOS: Computer and information sciences #Information Theory (cs.IT) #Optical Network Technologies #Optical Wireless Communication Technologies
paper · pdf · doi:10.48550/arxiv.1809.02893
openalex publication_date 2018/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we consider a relay-assisted uplink non-orthogonal multiple\naccess (NOMA) system where two radio frequency (RF) users are grouped for\nsimultaneous transmission, over each resource block, to an intermediate relay\nwhich forwards the amplified version of the users' aggregated signals in the\npresence of multiuser interference to a relatively far destination. In order to\ncope with the users' ever-increasing desire for higher data rates, a\nhigh-throughput free-space optics (FSO) link is employed as the\nrelay-destination backhaul link. Dynamic-order decoding is employed at the\ndestination to determine the priority of the users based on their instantaneous\nchannel state information (CSI). Closed-form expressions for the individual-\nand sum-rate outage probability formulas are derived in the case of independent\nRayleigh fading for the users-relay access links when the FSO backhaul link is\nsubject to Gamma-Gamma turbulence with pointing error. This work can be\nregarded as an initial attempt to incorporate power-domain NOMA over\nultra-high-speed FSO-backhauled systems, known as mixed RF-FSO systems.\n