9
votes
Isn't Gardner's algorithm and Early-Late gate the same thing?
The Gardner Timing Error Detector is diagrammed in the graphic below, where two samples per symbol are used, and the error is determined using Prompt*(Late-Early), and when synchronized the center ...
- 37.7k
6
votes
Accepted
Gardner Timing Recovery for Repeated Symbols
Your Gardner Loop would properly "Flywheel" in the absence of symbol transitions. So it would slowly drift off of synchronization, but would not spiral out of control as you describe. This is ideal ...
- 37.7k
6
votes
Gardner timing recovery and constellation diagram
Your timing error detector should be run once for each input symbol. As you noted, your signal is far more oversampled than you need to be, so you won't end up using most of them for the purposes of ...
- 23.7k
5
votes
Accepted
Actual Sample Rate slightly off?
If you calculate the error, 44102/44100 is only about 45 parts per million. That is well within operating tolerance of many crystal oscillators used in consumer equipment to generate audio sampling ...
- 1,471
1
vote
Accepted
Timing Jitter in PLLs
The noise is colored. If we are to talk of spectral densities (color) then we would best refer to phase noise and not jitter (jitter is the result of integrating the phase noise, and typically after a ...
- 37.7k
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