Lee, Saetbyeol, and Manar Mohaisen. 2016. “Gram-Schmidt Orthogonalisation-Based Antenna Selection for Pre-Coding Aided Spatial Modulation”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 8 (9):83-88. https://jtec.utem.edu.my/jtec/article/view/917.