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Recent content by uoedaboard

  1. U

    Please HELP: "samples per frame" in Matlab simulin

    Hi all, I am new to Matlab simulink, and try to start following the demo in the matlab folder. Here's the question I simulate the demo. 1. Input: simple signal source (white noise, and sine wave), output FFT spectrum scope. Input source is frame-based, with "samples pre frame"...
  2. U

    Please help: Low-IF I/Q demodulation in analog or digital?

    Dear all, I have questions about low-IF scheme. If I decide to have about 5MHz IF in the system, can you help to compare below? 1. Quadrature mixer+analog polyphase filter -> IF output -> ADC -> digital quadrature mixing 2. Quadrature mixer -> IF I/Q output -> ADC -> digital mixing If the...

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