[Solved] How to convert dbm to watts on Matlab

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The watt to dBm conversion follows the following rule:

dBW = 10 * log10(P[w])

dBm = 10 * log10(1000 * P[w])
    = 10 * log10(P[w]) + 10 * log10(1000)
    = 10 * log10(P[w]) + 10 * 3
    = 10 * log10(P[w]) + 30
    = dBW + 30

Hence, the inverse path will be:

P[w] = 10 ^ ((P[dBm] - 30) / 10);

Thus, in Matlab:

P_w = 47;
P_dBm = 10 ^ ((P_w - 30) / 10); % 50.12

solved How to convert dbm to watts on Matlab