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This paper surveys some recent advances in coding, feedback, and two-way communications. It considers the usefulness of feedback relative to coding, the kind of feedback system to use, the advantages of combining feedback with coding and the characteristics of a system that results therefrom. It then takes up the question of how feedback for error-control purposes can be incorporated into a two-way communication system and the effectiveness of block codes plus feedback in combatting burst-type noise. Finally, the paper presents a brief discussion of existing feedback systems using some of these principles.
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L. S. Schwartz (1963) studied this question.
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