There are two basic methods of error control for communication, both involving coding of the messages. This book begins with a short introduction to the theory of block codes with emphasis on the parts important for error detection. It offers an account of the known results on the probability of undetected error on the q-ary symmetric channel.

Provides a description of various methods to calculate or estimate the probability of undetected error, for the binary symmetric channel. This book considers a number of other channel models. It describes a number of protocols for feedback communication systems with methods for optimal choice of error detecting codes for the protocols.