Quantizing a complex signal with uniform quantizer

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rihab
rihab 2015-9-25
评论： Walter Roberson 2015-9-25
I have a signal that has complex normal distribution with mean 0 and variance of 1. I want to quantize it with a uniform quantizer to 512 levels. Does someone has any idea how to quantize such a complex signal in matlab? I would appreciate any input.

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回答（1 个）

Walter Roberson
Walter Roberson 2015-9-25
Normal distribution has an infinite tail. If you quantize it with a fixed number of uniform levels then you cannot cover the entire range. Unless you want to quantize by CDF?
Does the signal have a constant magnitude? Could you show us the generating function?
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rihab
rihab 2015-9-25
Thank you for the suggestion.
So will it make sense if I change the interval to (-sqrt(2),sqrt(2)) and quantize the signal using steps mentioned in the second comment? I would appreciate any other suggestions too.
Walter Roberson
Walter Roberson 2015-9-25
+/- 3.097269078198785 would leave 1/512'th of the data outside the range.
round(s / 3.097269078198785 * 256)/256

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