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Signal Processing

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    $\begingroup$ What is your processing clock rate, and your input data rate? $\endgroup$ Commented Feb 11, 2016 at 19:34
  • $\begingroup$ What is the accuracy that you require? I assume also you're using fixed-point computation. What bit depth are you using? A polynomial approximation (or LUT) with quadrant adjustment is a common method to implement atan2. Not sure if you can get by without a division, though. $\endgroup$ Commented Feb 11, 2016 at 19:38
  • $\begingroup$ Input clock is 150MHz, input data rate is 150 MSamps/sec. Basically I get a new input every clock cycle. Having latency is fine, but I must produce an output at 150 MSamps/sec as well. $\endgroup$ Commented Feb 11, 2016 at 19:38
  • $\begingroup$ My simulations show I can live with about 1*10^-9. Not sure the absolute minimum fixed point bits, but I've been simulating with a Q10.32 fixed point format $\endgroup$ Commented Feb 11, 2016 at 19:45
  • $\begingroup$ This article explains a fixed-point implementation of atan2. You will still need a division though. $\endgroup$ Commented Feb 11, 2016 at 21:24