Does RFmx Demod support Pi/2 BPSK demodulation?

Updated Feb 16, 2024

Reported In

Software

  • RFmx
  • RFmx Demod

Issue Details

I want to demoulate a Pi/2 BPSK waveform for a specific GPS testing, but I find the current RFmx Demod SFP and RFmx Demod API seem not support Pi/2 BPSK type. Does RFmx support Pi/2 BPSK demodulation? or do we have an exampl code or method to demodulate Pi/2 BPSK waveform?
 

Solution

Unfortunately, there is no.

Pi/2 BPSK does not appear to be supported by RFmx Demod. The following are the supported PSK formats in RFmx Demod.
 

 

Normal (0) Sets the modulation type to PSK.
Offset QPSK (1) Sets the modulation type to offset quadrature PSK (OQPSK). The ideal symbol timing of Q is offset by half of a symbol period from the ideal symbol timing of I.
PI/4 - QPSK (2) Sets the modulation type to pi/4 QPSK. In this modulation, each QPSK symbol is rotated by pi/4.
PI/8 - 8PSK (3) Sets the modulation type to pi/8-8 PSK. In this modulation, each 8 PSK symbol is rotated by pi/8.
3*PI/8 - 8PSK (4) Sets the modulation type to 3*pi/8-8 PSK. In this modulation, each 8 PSK symbol is rotated by 3*pi/8.

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