The New-Word Policy and Decision Feedback in Loop Data Communication Networks

The new-word policy with decision feedback is shown to improve the efficiency of loop data communication with noisy links to the extent that the average number of loop transmissions per new word increases only linearly with the number of identically noisy links. This compares to an exponential increase in more conventional acknowledge-or-retransmit systems. Also, in the (almost) noiseless case, a greater number of word transfers per loop transmission can be achieved.