  Detecting the presence of a valid signal is an important task of a
telecommunication receiver. When the receiver is unable to detect the presence
of a valid signal, due to noise and fading, it is referred to as an erasure.
This work deals with the probability of erasure computation for orthogonal
frequency division multiplexed (OFDM) signals used by multiple input multiple
output (MIMO) systems. The theoretical results are validated by computer
simulations. OFDM is widely used in present day wireless communication systems
due to its ability to mitigate intersymbol interference (ISI) caused by
frequency selective fading channels. MIMO systems offer the advantage of
spatial multiplexing, resulting in increased bit-rate, which is the main
requirement of the recent wireless standards like 5G and beyond.
