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。
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。
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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