Alisson Pessoa Guimarães, Antonio, and Charles Casimiro Cavalcante. “Upper Bound of Ergodic Capacity for MIMO Channels With Ricean-Fading Using Majorization Theory”. Journal of Communication and Information Systems 27, no. 1 (June 14, 2015). Accessed May 25, 2020. https://jcis.sbrt.org.br/jcis/article/view/132.