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Filtering and Bandpass Signals

Filtering and Bandpass Signals. Analog and Digital Communications Autumn 2005-2006. LTI Systems Revisited. For random and deterministic signals:. (Prove it at home!). (For real channels!). LTI. Example: Random Signal. Consider White Noise input to an LTI filter.

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Filtering and Bandpass Signals

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  1. Filtering and Bandpass Signals Analog and Digital Communications Autumn 2005-2006 CS477: Analog and Digital Communications

  2. LTI Systems Revisited For random and deterministic signals: (Prove it at home!) (For real channels!) CS477: Analog and Digital Communications

  3. LTI Example: Random Signal Consider White Noise input to an LTI filter CS477: Analog and Digital Communications

  4. Example: Deterministic Signal (prove it yourself!) CS477: Analog and Digital Communications

  5. Example: Modulation Consider Modulation of a Random Signal (Prove it at home!) CS477: Analog and Digital Communications

  6. Bandpass Signals How does it look like in frequency domain? What might be an expression for the time domain signal? Two deltas (in frequency) convolved with a baseband/lowpass signal! A sinusoid multiplied with a baseband/lowpass signal! CS477: Analog and Digital Communications

  7. Bandpass Signals CS477: Analog and Digital Communications

  8. Lowpass-Bandpass Why this all lowpass-bandpass stuff needed? CS477: Analog and Digital Communications

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