Difference between revisions of "Constellation Receiver"

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This block makes hard decisions about the received symbols (using a constellation object) and also fine tunes phase synchronization.
 
This block makes hard decisions about the received symbols (using a constellation object) and also fine tunes phase synchronization.
  

Revision as of 22:21, 12 March 2019

This block makes hard decisions about the received symbols (using a constellation object) and also fine tunes phase synchronization.

The phase and frequency synchronization are based on a Costas loop that finds the error of the incoming signal point compared to its nearest constellation point. The frequency and phase of the NCO are updated according to this error.

Parameters

Constellation : constellation of points for generic modulation, see Constellation Object

Loop BW : Loop bandwidth of the Costas Loop. A good starting point is 2pi/100, or about 0.06.

Min Freq Deviation : minimum normalized frequency value the loop can achieve

Max Freq Deviation : maximum normalized frequency value the loop can achieve