Evaluation of massive multiple-input multiple-output communication performance under a proposed improved minimum mean squared error precoding

• Published in: IAES International Journal of Artificial Intelligence Vol. 12; no. 2; p. 984
• Main Authors: Kadhim, Dheyaa Jasim, Saleh, Muna Hadi, Abou-Loukh, Sadiq Jassim
• Format: Journal Article
• Language: English
• Published: Yogyakarta IAES Institute of Advanced Engineering and Science 01.06.2023
• Subjects: Downlinking; Efficiency; MIMO communication; Performance degradation
• ISSN: 2089-4872; 2252-8938; 2089-4872
• DOI: 10.11591/ijai.v12.i2.pp984-994

The fundamental of a downlink massive multiple-input multiple-output (MIMO) energy- issue efficiency strategy is known as minimum mean squared error (MMSE) implementation degrades the performance of a downlink massive MIMO energy-efficiency scheme, so some improvements are adding for this precoding scheme to improve its workthat is called our proposal solution as a proposed improved MMSE precoder (PIMP). The energy efficiency (EE) study has also taken into mind drastically lowering radiated power while maintaining high throughput and minimizing interference issues. We further find the tradeoff between spectral efficiency (SE) and EE although they coincide at the beginning but later their interests become conflicting and divergent then leading EE to decrease so gradually while SE continues increasing logarithmically. The results achieved that for a single-cellular massive MU-MIMO downlink model, our PIMP scheme is the appropriate scenario to achieve higher precoding performance system. Furthermore, both maximum ratio transmission (MRT) and PIMP are suitable for performance improvement in massive MIMO results of EE and SE. So, the main contribution comes with this work that highest EE and SE are belong to use a PIMP which performs better appreciably than MRT at bigger ratio of number of antennas to the number of the users.