NOMA based cognitive relaying: Transceiver hardware impairments, relay selection policies and outage performance comparison

DT Do, AT Le - Computer Communications, 2019 - Elsevier
This paper considers cognitive radio (CR) inspired non-orthogonal multiple-access (NOMA).
Such NOMA users with performance improvement can be achieved as deploying relay …

A new rate splitting strategy for uplink CR-NOMA systems

H Liu, Z Bai, H Lei, G Pan, KJ Kim… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In uplink non-orthogonal multiple access (NOMA) channels, the existing cooperative
successive interference cancellation (SIC) and power control (PC) schemes lack the …

Error performance of NOMA-based cognitive radio networks with partial relay selection and interference power constraints

L Bariah, S Muhaidat, A Al-Dweik - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Non-orthogonal multiple access (NOMA)-based cognitive radio (CR) networks have recently
emerged as a promising solution to enhance the spectral efficiency and massive …

Joint impacts of imperfect CSI and imperfect SIC in cognitive radio-assisted NOMA-V2X communications

DT Do, TA Le, TN Nguyen, X Li, KM Rabie - IEEE Access, 2020 - ieeexplore.ieee.org
In this study, the performance of a secondary network in cognitive radio (CR) is studied in
the context of vehicle-to-everything (V2X). The non-orthogonal multiple access (NOMA) is …

Nonorthogonal multiple access in large-scale underlay cognitive radio networks

Y Liu, Z Ding, M Elkashlan… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In this paper, nonorthogonal multiple access (NOMA) is applied to large-scale underlay
cognitive radio (CR) networks with randomly deployed users. To characterize the …

Spectrum resource optimization for NOMA-based cognitive radio in 5G communications

X Liu, Y Wang, S Liu, J Meng - IEEE Access, 2018 - ieeexplore.ieee.org
In traditional cognitive radio (CR), secondary user (SU) can only access the idle spectrum
when primary user (PU) is absent, which has to vacate the spectrum when detecting the …

NOMA in cooperative underlay cognitive radio networks under imperfect SIC

DT Do, AT Le, BM Lee - IEEE Access, 2020 - ieeexplore.ieee.org
In conventional cognitive radio (CR), the users in secondary network (SN) can only access
the idle spectrum when users in primary network (PN) are absent. This novel strategy …

Outage probability for cooperative NOMA systems with imperfect SIC in cognitive radio networks

G Im, JH Lee - IEEE Communications Letters, 2019 - ieeexplore.ieee.org
In this letter, a cooperative non-orthogonal multiple access system with imperfect successive
interference cancellation is investigated in an underlay cognitive radio network. Considering …

NOMA-based integrated satellite-terrestrial relay networks under spectrum sharing environment

R Liu, K Guo, K An, S Zhu… - IEEE Wireless …, 2021 - ieeexplore.ieee.org
With the increasing requirements for efficient utilization of satellite resources, both non-
orthogonal multiple access (NOMA) scheme and cognitive radio (CR) have been recognized …

Frameworks of non-orthogonal multiple access techniques in cognitive radio communication systems

P Thakur, A Kumar, S Pandit, G Singh… - China …, 2019 - ieeexplore.ieee.org
Recently, the increasing demand of radio spectrum for the next generation communication
systems due to the explosive growth of applications appetite for band-widths has led to the …