然而，因为他们的分别网络技术的不同，数传订户专线使用者可用的最大的带宽通常比最大值电缆低调制解调器率。
However, the maximum bandwidth available to DSL users is usually lower than the maximum cable modem rate because of differences in their respective network technologies.
提出一种适用于石油测井领域高速电缆遥测通信系统，基于自适应均衡和QAM正交振幅调制技术的调制解调器的原理和实现方法。
This paper proposed a modem based on adaptive equalization and QAM in oil logging for cable telemetry communication systems with high date rate.
通过对OFDM(正交频分复用)技术原理及测井电缆传输特性的分析，设计出满足测井电缆所需的调制解调器。
Based on analyzing the theory of OFDM (Orthogonal Frequency Division Multiplexing) and characteristic of cable transmission, the Modem of high speed cable telemetry system has been designed.
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