Binary symmetric decision feedback systems
Bernard J. Harris, K. C. Morgan · Transactions of the American Institute of Electrical Engineers Part I Communication and Electronics · 1958
In a simple binary decision feedback system the receiver, as a result of a decision process made on each received message, either accepts and prints the corresponding symbol, or rejects the message as too ambiguous and reports the rejection to the sender. The information in the ambiguous message is discarded, and the sender subsequently repeats the message. This process permits a trade-off between information rate and error probability.