Frequency Source [物] 频率源
constant-frequency source 固定频率震源
fixed-frequency source 固定频率源
variable frequency source 变频电源
standard frequency source 标准频率源
pll frequency source 锁相频率源
dds frequency source 直接数字合成频率源
high-frequency source 高频信号源
Phase noise is a sort of random phase disturbance produced by the nonideality factors of frequency source. Its impact to OFDM includes common phase error (CPE)and inter carrier interference(ICI).
相位噪声是频率源非理想因素引入的一种随机相位干扰,对解调的OFDM信号产生两种影响:公共相位误差(CPE)和载波间干扰(ICI)。
参考来源 - OFDM系统中相位噪声的影响与补偿Then do a research of PLL frequency source on two key feature—phase noise and spurs.
然后详细分析了频率合成器两个关键指标,相噪和杂散的产生机理及特性。
参考来源 - Ku波段宽带低噪声雷达跳频源的研制·2,447,543篇论文数据，部分数据来源于NoteExpress
Describe their location, systems, access approaches, source data traffic and update frequency, data security, and data quality.
描述其位置、系统、访问方法、源数据流通和更新频率、数据安全性和数据质量。
Consistent with the event model, the event source is responsible for asynchronous delivery of the event messages on a frequency that it determines.
为了与事件模型一致，事件源负责按照自己确定的频率以异步方式交付事件消息。
Duplication within a single source or across sources as found through either a frequency distribution or a record linkage indicates that a consolidation is needed for presentation of the data.
通过频率分布或记录链接发现的单个源内或跨多个源的重复表示，需要通过合并来提供数据。
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