In FDM (typically used for analog signals) the channel is subdivided into subchannels, each with a different frequency width that is assigned to a specific signal.

在分频多任务（用于模拟讯号），信道切割成次信道，每个信道具有不同的频率宽度，指定给特定的讯号。

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According to the theory of orthogonal multiplex, frequency division multiplex (FDM) and time division multiplex (TDM) belong to orthogonal multiplex.

根据正交分割理论，现在流行的频率分割制(FDM)和时间分割制(TDM)都属于正交分割的范畴。

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To solve this problem, a new fingerprinting scheme based on the FDM(frequency division multiplexing) technique is proposed in this paper.

针对上述问题，提出了一种新的基于频分复用的数字指纹编码方案。

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