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From: birhane Alemayoh on 23 Jan 2010 05:59
Hi all,

I want to use the matlab modnorm function with QAM modulation. The syntax is as follows
scale = modnorm(const, 'avpow', avpow)
I know that this works fine if const is a vector in which its elements are all the QAM modulated signals. For example,
M = 64; % QAM Alphabet size
const = qammod([0:M-1],M);

I want to find the scale of only a single alphabet taken from a particular QAM alphabet size. for example, const = 5 -7i , which is taken from a 64 QAM constellation.
so how do I calculate the value of scale now?
If I simply substitute this value ,(const = 5 -7i ), the scale value I will got is different from the value obtained with const = qammod([0:64-1], 64).
could you please help me.
Thank you.
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