Open AccessA new look on CSI imperfection in downlink NOMA systems
Author(s) -
AnhTu Le,
DinhThuan Do
Publication year - 2021
Publication title -
bulletin of electrical engineering and informatics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 12
ISSN - 2302-9285
DOI - 10.11591/eei.v10i3.2719
Subject(s) - noma , telecommunications link , computer science , nakagami distribution , channel state information , fading , exploit , monte carlo method , communications system , spectral efficiency , focus (optics) , channel (broadcasting) , computer network , telecommunications , wireless , mathematics , computer security , statistics , optics , physics
Observing that cooperative scheme benefits to non-orthogonal multiple access (NOMA) systems, we focus on system performance analysis of downlink. However, spectrum efficiency is still high priority to be addressed in existing systems and hence this paper presents full-duplex enabling in NOMA systems. Other challenge needs be considered related to channel state information (CSI). In particular, we derive closedform expressions of outage probability for such NOMA systems under the presence of CSI imperfection. Furthermore, to fully exploit practical environment, we provide system model associated with Nakagami-m fading. The Monte-Carlo simulations are conducted to verify the exactness of considered systems.