| 摘要 |
A Variable Depth Regenerative Repeater 40 is disclosed employing a number of different decoding-encoding paths. In each path the extent or depth to which the received signal is decoded and subsequently encoded is different. As a result quicker decoding-encoding paths are provided through the repeater at the expense of the coding gain given by the decoding-encoding process. The quicker paths result in a smaller delay of the signal as it passes through the repeater, and can be selected when the number of errors in the digital signal is below a predetermined number. When the number of errors rise above a predetermined level however, a more rigorous decoding-encoding path or depth can be selected, resulting in correction of at least some of the errors that have arisen, but a longer delay. By monitoring the number of errors and choosing the decoding-encoding path appropriately, the overall transmission delay through one or more repeaters can be reduced. |
