These streams are called sub-channels.

这些码流就被称为子频道。

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For example, if the digital TV channel is channel 53, then 53.1, 53.2 and 53.3 could be three sub-channels on that channel.

对于数字频道53来说，53.1，53.2，53.3就是它的三个子频道。

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However, in far-end crosstalk, its sub-channels exist still a lot of frequency spectrum overlapping and increase error-rate.

在远端串扰时，其各子信道仍然存在着较大的频谱重叠，使误码率增加。

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