基于同步的数字 复接系统, 即输入的数据码流速率相同。若各 支路 的数 据码 流速 率不 同, 则 不能 直接 进行 复接, 因为复接合成后的数字信 号流, 在 接收端是无法分接恢复成原来的信号的, 为此在复接 前要使各支路数码率同步, 我们可以在设计的同步数字复接系 统前方加一码速调整单元, 以调整各支路的速码率使其同步, 并在分接 后再经过码速调整恢复为原来的速率。

-Based on the synchronous digital multiplex system, namely the input data stream rate is the same. If the number of each branch, according to the code flow rate is not directly to pick up, because after the multiplex synthesis of digital signal flow, at the receiving end is unable to connect back to the original signal, so to make the selection in front of the multiplex synchronous digital rate, we can in the design of synchronous digital multiplex system System with a yard in front speed adjustment unit to adjust the selection of speed rate, synchronization and after yards after tapping speed adjust to restore to the original rate.