@article{MAKHILLJEAS2018131916915,
    title = {Influence of the Number of Antennas on the Outage Probability of
Non-Orthogonal Multiple Access in 5G Systems},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {13},
    number = {19},
    pages = {8051-8056},
    year = {2018},
    issn = {1816-949x},
    doi = {jeasci.2018.8051.8056},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2018.8051.8056},
    author = {Haider M.},
    keywords = {5G,non-orthogonal multiple access,outage probability,MIMO,antennas,next generation},
    abstract = {The 5G wireless system relies on Non-Orthogonal Multiple Access (NOMA) as a radio access scheme using extremely-dense base stations and unprecedented number of antennas to provide improved performance, high degree of integrative services, high-rate coverage and seamless user experience. The difference in the number of antennas used in the Mobile Devices (MDs) and those in the Base-Stations (BSs) in a cell plays a significant role in the overall system performance. Evaluation of the influence of such difference (&delta;) is analyzed in this study based on the outage probability, Pr<sub>k</sub><sup>out</sup>. Computer simulation results are provided to facilitate the performance evaluation of the MIMO-NOMA and also, to demonstrate the accuracy of the developed analytical results. The achieved results reveal that a trade-off between the level of the SNR and the &delta; in the outage probability. Also, strategy of pairing users in a cluster plays an important role in the value of Pr<sub>k</sub><sup>out</sup> when the number of users in a cluster is increased more than two users the performance is governed by allocation of the transmit power coefficient with level of SNR besides &delta;, compared with that of the conventional orthogonal Multiple Access (OMA).}
    }