variable carrier meaning in English
变幅载波
Examples
- Ddc ( digital down - conversion ) high - efficiency structure is studied to realize the variable carrier frequency band - pass signal acquisition on wideband condition
参考软件无线电设计的概念和国内外相关文献，提出了多项滤波下变频结构的fpga实现。 - Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit , it solves the bottleneck in mixing and increases the handle speed . the partition of the tuning channel according to the digital mixing sequence , and the ddc by means of decimating first , the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal . according to the structure of the ddc and the requirement of the frequency
短数据快速测频算法的具体实现:使用并行流水线的设计方法,提高了系统的数据吞吐率,在100mhz的系统时钟下,能够实时处理400mhz ~ 600mhz速率a / d采样的数据,在64点采样, 100mhz系统时钟情况下,初次测频占用时间640ns ,以后每次测频占用时间缩短到160ns ,实时地提供多相滤波下变频所需的载频位置信息,缩短了接收机的调谐时间。 - Filter poly - phase decomposition method is adopted in this dissertation . the partition of the tuning channel according to the digital mixing sequence , and the digital down - conversion by means of decimating first , the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal
本文采用滤波器多相分解方法，按数字混频序列划分调谐信道，使用先抽取，后低通滤波，再混频的数字下变频结构，高效实现了变载频带通信号数字下变频。