Editing Invertible matrix (section)

=== Matrix inverses in MIMO wireless communication ===
Matrix inversion also plays a significant role in the [[MIMO]] (Multiple-Input, Multiple-Output) technology in [[wireless communications]]. The MIMO system consists of ''N'' transmit and ''M'' receive antennas. Unique signals, occupying the same [[frequency band]], are sent via ''N'' transmit antennas and are received via ''M'' receive antennas. The signal arriving at each receive antenna will be a [[linear combination]] of the ''N'' transmitted signals forming an ''N''&nbsp;×&nbsp;''M'' transmission matrix '''H'''. It is crucial for the matrix '''H''' to be invertible so that the receiver can figure out the transmitted information.