Open AccessPerformance Analysis of MIMO-NOMA Systems Based on Dynamic User Pairing Scheme
Author(s) -
Shady A Deraz,
Mohamed R. M. Rizk,
Shawki Shaaban,
Karim H. Moussa
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1447/1/012016
Subject(s) - noma , mimo , pairing , spectral efficiency , computer science , bandwidth (computing) , channel (broadcasting) , channel capacity , 3g mimo , electronic engineering , topology (electrical circuits) , computer network , telecommunications , mathematics , engineering , telecommunications link , physics , superconductivity , quantum mechanics , combinatorics
Multiple input multiple output (MIMO) structure can enhance the total capacity of the modern communication systems without using consuming excess power or bandwidth. Non-orthogonal multiple access (NOMA) configuration is a good nominee to accommodate with MIMO structure to fulfil the demands to extra user data rates and enriched spectral efficiencies. The dynamic uniform channel gain difference (DUCGD) user pairing technique plays an important role to maximize the capacity of all the paired and served users. The DUCGD is implemented by calculating the channel gain of every prospected user and sorting it in descending order to pair ones with the highest difference in channel gains to be functioned together. In this paper, the performance analysis of MIMO-NOMA systems by means of DUCGD is presented. The numerical analysis showed that, the increase of the number of users leads to an increase in the systems’ gain and the total achieved sum rates. This improvement is shown to be due to using DUCGD and an increased number of transmitting and receiving antennas, jointly.