多帶通信號直接均勻欠采樣技術(shù)
THE DIRECT UNIFORM UNDER-SAMPLING TECHNIQUE OF MULTIPLE BANDPASS SIGNALS
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摘要: 該文討論了寬帶數(shù)字接收機中對多個復或?qū)嵉膸ㄐ盘柕闹苯泳鶆虿蓸?。對這多個通帶位置及帶寬均是任意的實或復的帶通信號給出了采樣率應(yīng)滿足的關(guān)系,用此采樣率采樣使輸入數(shù)據(jù)得到有效的壓縮,同時結(jié)合濾波器將頻譜進行搬移,最后給出了實例。
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關(guān)鍵詞:
- 帶通信號; 均勻采樣; 混疊
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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