A Hybrid Spatial Adaptive Modulation and Frequency Stochastic Approach for MU-MIMO-OFDM Systems in the Context of Underlay Cognitive Radios. - Rym Labdaoui; Khalida Ghanem; Fatiha Youcef Ettoumi (Period. Polytech. Electr. Eng. Comput. Sci., 2023)