Hybrid NOMA/OMA with buffer-aided relay selection in cooperative networks

N Nomikos, T Charalambous… - IEEE Journal of …, 2019 - ieeexplore.ieee.org
Non-orthogonal multiple access (NOMA) aims to increase the spectral efficiency of fifth
generation networks by relaxing the orthogonal use of radio-resources. In this paper, a …

Relay selection for radio frequency energy-harvesting wireless body area network with buffer

D Sui, F Hu, W Zhou, M Shao… - IEEE Internet of Things …, 2017 - ieeexplore.ieee.org
In this paper, a relay selection protocol for energy harvesting wireless body area network
with buffer is proposed, that considers both the energy of relay nodes and channel state …

Flex-NOMA: exploiting buffer-aided relay selection for massive connectivity in the 5G uplink

N Nomikos, ET Michailidis, P Trakadas… - IEEE …, 2019 - ieeexplore.ieee.org
The success of fifth generation (5G) mobile network and its long-term evolution (LTE) relies
on enabling demanding services with massive connectivity requirements, including Internet …

Physical layer security in buffer-state-based max-ratio relay selection exploiting broadcasting with cooperative beamforming and jamming

R Nakai, S Sugiura - IEEE Transactions on Information …, 2018 - ieeexplore.ieee.org
In this paper, we propose a novel secure buffer-aided decode-and-forward relay selection
that amalgamates the benefits of the buffer-state-based relay selection, the max-ratio …

Integrating broadcasting and NOMA in full-duplex buffer-aided opportunistic relay networks

N Nomikos, T Charalambous… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
This paper proposes the integration of non-orthogonal multiple access (NOMA) and
broadcasting with buffer-aided (BA) full-duplex (FD) relaying to improve the spectral …

Buffer-state-and-thresholding-based amplify-and-forward cooperative networks

M Oiwa, R Nakai, S Sugiura - IEEE Wireless Communications …, 2017 - ieeexplore.ieee.org
In this letter, we propose a novel buffer-state-based amplify-and-forward relaying protocol for
dual-hop cooperative networks. The proposed protocol is designed to amalgamate the …

Hybrid NOMA/OMA broadcasting-and-buffer-state-based relay selection

J Kochi, R Nakai, S Sugiura - IEEE Transactions on Vehicular …, 2021 - ieeexplore.ieee.org
In this paper, we propose a novel buffer-aided relay selection scheme that is capable of
amalgamating the concepts of non-orthogonal multiple access (NOMA) and orthogonal …

Low-complexity buffer-aided link selection with outdated CSI and feedback errors

N Nomikos, T Charalambous… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
Buffer-aided relays can improve the diversity of multi-hop networks, however, they increase
packet delays. Thus, various delay-aware protocols have been developed, but without …

Delay-and diversity-aware buffer-aided relay selection policies in cooperative networks

N Nomikos, D Poulimeneas, T Charalambous… - IEEE …, 2018 - ieeexplore.ieee.org
Buffer-Aided (BA) relaying has shown tremendous performance improvements in terms of
throughput and outage probability, although it has been criticized of suffering from long …

Generalized buffer-state-based relay selection with collaborative beamforming

R Nakai, M Oiwa, K Lee… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
In this paper, we propose a generalized buffer-state-based relaying protocol in the context of
finite buffer-aided cooperative systems. The proposed relaying scheme relies on two …