调制速率反映信号波形变换的频繁程度，其定义是每秒传输信号码元(波形)的个数，又称符号速率、码元速率或波特率，单位为波特(baud)。
研究了不同调制速率下的增益开关半导体激光器的最佳工作状态。
The optimal operating condition of gain switched semiconductor laser with different modulation rate is studied in this paper.
该方案的显著特点是：调制方式、调制速率、中频频率皆可编程设置。
The outstanding features of this plan lie in the programmable modulate mode, modulate rate, IF rate and so on.
同时，根据信道特点和数据传输速率的要求给出了深空通信的调制方式。
Meanwhile, modulation schemes for deep space communication are provided based on channel features and requirements on data transmission rates.
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