MIMO-OFDM
This article may be too technical for most readers to understand . Please help improve it to make it understandable to non-experts, without removing the technical details. ( June 2014 ) (Learn how and when to remove this template message) Multiple-input, multiple-output orthogonal frequency-division multiplexing ( MIMO-OFDM ) is the dominant air interface for 4G and 5G broadband wireless communications. It combines multiple-input, multiple-output (MIMO) technology, which multiplies capacity by transmitting different signals over multiple antennas, and orthogonal frequency-division multiplexing (OFDM), which divides a radio channel into a large number of closely spaced subchannels to provide more reliable communications at high speeds. Research conducted during the mid-1990s showed that while MIMO can be used with other popular air interfaces such as time-division multiple access (TDMA) and code-division multiple access (CDMA), the combination of MIMO and OFDM is most practic