et. al., S. K. V. . “Comparison and Analysis of Sub-Optimal Performance of OFDM/SDMA Uplink System That Use Conventional Multiuser Detection Techniques”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 10, Apr. 2021, pp. 4593-01, https://turcomat.org/index.php/turkbilmat/article/view/5204.