Binary communication feedback systems
Bernard J. Harris, K. C. Morgan, A. Hauptschein, L. S. Schwartz · Transactions of the American Institute of Electrical Engineers Part I Communication and Electronics · 1959
Shannon's coding theorem for a noisy channel1 indicates that information can be transmitted as reliably as desired in the presence of noise, provided the transmitted rate does not exceed the channel capacity. In unidirectional systems the reliability may be improved by increasing the code length or the redundancy of the message.