| Communications Blockset |
  |
DSB AM Demodulator Passband
Demodulate DSB-AM-modulated data
Library
Analog Passband Modulation, in Modulation
Description
The DSB AM Demodulator Passband block demodulates a signal that was modulated using double-sideband amplitude modulation. The block uses the envelope detection method. The input is a passband representation of the modulated signal. Both the input and output signals are real sample-based scalar signals.
In the course of demodulating, this block uses a filter whose transfer function is described by the Lowpass filter numerator and Lowpass filter denominator parameters.
Dialog Block
- Offset factor
- The same as the Input signal offset parameter in the corresponding AM with Carrier block.
- Carrier frequency (Hz)
- The frequency of the carrier in the corresponding AM with Carrier block.
- Initial phase (rad)
- The initial phase of the carrier in radians.
- Lowpass filter numerator
- The numerator of the lowpass filter transfer function. It is represented as a vector that lists the coefficients in order of descending powers of s.
- Lowpass filter denominator
- The denominator of the lowpass filter transfer function. It is represented as a vector that lists the coefficients in order of descending powers of s. For an FIR filter, set this parameter to
1.
- Sample time
- The sample time of the output signal.
Pair Block
DSB AM Modulator Passband
See Also
DSB AM Demodulator Baseband
| | DSB AM Demodulator Baseband | | DSB AM Modulator Baseband | |