多带通信号直接均匀欠采样技术
THE DIRECT UNIFORM UNDER-SAMPLING TECHNIQUE OF MULTIPLE BANDPASS SIGNALS
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摘要: 该文讨论了宽带数字接收机中对多个复或实的带通信号的直接均匀采样。对这多个通带位置及带宽均是任意的实或复的带通信号给出了采样率应满足的关系,用此采样率采样使输入数据得到有效的压缩,同时结合滤波器将频谱进行搬移,最后给出了实例。
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关键词:
- 带通信号; 均匀采样; 混叠
Abstract: This paper discussed the uniform under-sampling of multiple bandpass signals in digital receiver. For these multiple real or complex bandpass signals having arbitrary band position and bandwidth, the acceptable sampling rate has been given. Using this sampling rate to sample the input bandpass signal, an efficient data compression can be gotten. In the same time using band pass filter, these multiple bandpass signals can be transferred to the lower frequency. Finally, an example is given to show the correctness of the uniform sampling method of multiple bandpass signals. -
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