There are several technologies to transmit any signal in wireless communication. Technologies are: Integration, Differentiation, TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), OFDM (Orthogonal Frequency Division Multiplexing). In which OFDM is superior to any other technology. It is widely used in MIMO schemes also where multiple transmission and reception process done with different types of antennas.
Citation: Shukla K, Bhatt N (2015) Improve Diversity with OFDM Technique in V-BLAST Architecture. J Telecommun Syst Manage 4:121.