Citation
Abstract
When the capacity of a channel cannot be determined in advance, or if it can change unpredictably, there is a problem in selecting the rate of transmission. On the one hand, a design for the worst case prevents recovery of large amounts of data when the situation is better than anticipated. On the other hand, a design based on optimistic assumptions is threatened by total failure when the conditions are bad. This article discusses a strategy that covers the in-between range of possibilities, and its implementation on Mariner-type telemetry systems. It is shown that large increases in expected data rate can be obtained at the cost of small reductions in the minimum rate. Final decisions are made on the ground after all the data are received.
Details
- Volume
- IX
- Published
- June 15, 1972
- Pages
- 53–58
- File Size
- 534.8 KB