相位噪声总是具体的， 取决于载波偏移， 作为相对于载波偏移的一个单边带噪声。

The phase noise is usually specified, depending on the carrier offset, as a single-sideband phase noise referenced to the carrier offset.

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本文介绍了时钟网络中抖动、相位噪声、偏移、频率稳定度等参数的概念以及它们之间的转换关系。

The paper introduce the concepts of timing parameters, including: jitter, phase noise, skew, frequency stabilization, and the relationship between them.

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但是OFDM技术对频率偏移和相位噪声很敏感，所以同步是OFDM系统中的关键问题。

But OFDM is very sensitive to frequency offset and phase noise, so synchronization is the key problem for OFDM system.

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