As frequency divided multiplex access is widely adopted in communication satellite system, strict frequency spectrum limits on modulator is mandated.

通信卫星的频分复用机制，对卫星通信系统的发送信号频谱成型提出了严格的要求。

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The low voltage and low power target is attained by improving the modulator structure and optimizing from system to circuit blocks.

为了实现低电压低功耗设计的要求，改进了调制器结构，并进行了从系统到电路模块的优化。

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This paper focuses on the construction of the whole DVB-C modulator system and the realization of the core algorithm.

本文所研究的正是数字视频广播有线电视(DVB - C)调制器的系统构建和核心算法的实现。

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