It is challenging for the base station (BS) to serve multiple cell-edge users concurrently with
data rate guarantee due to limited power and spectrum resource. Using the relay enhances …

Serving multiple cell-edge mobile terminals poses multifaceted challenges due to the
increased transmission power and interferences, which could be overcome by relay …

Non-orthogonal multiple access (NOMA) is a key to multiple access techniques for the next
generation 5G wireless communication networks. In this paper, to improve the performance …

Non-orthogonal multiple access (NOMA) is a promising multiple access technique, which
exploits the power domain to enhance the spectral efficiency of the fifth generation (5G) …

Non-orthogonal multiple access (NOMA) has been focused to increase system capacity and
spectral efficiency for the fifth generation (5G) mobile networks. In order to improve the …

In this paper, we study the performance improvement methods for a cell-edge user of two-
user non-orthogonal multiple access (NOMA) systems in downlink scenarios. To this end …

This paper proposes a new communication protocol for a cooperative non-orthogonal
multiple access (NOMA) system. In this system, based on users' channel conditions, each …

Non-orthogonal multiple access (NOMA) is one of the promising radio access techniques in
5G communication networks. In this paper, a cooperative NOMA relaying scheme with two …

Non-orthogonal multiple access (NOMA), which is an effective solution to improve spectral
efficiency, has been considered as an emerging candidate for the fifth generation (5G) …

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 …