A
binary erasure channel (or BEC) is a common
communications channel model used in
coding theory and
information theory. In this model, a transmitter sends a
bit (a zero or a one), and the receiver either receives the bit or it receives a message that the bit was not received ("erased"). This channel is used frequently in information theory because it is one of the simplest channels to analyze. The BEC was introduced by
Peter Elias of MIT in 1954 as a toy example.