OFDM using DSP Builder

Hi,

I agree with OD about the idea of full dynamic range and in that case you can scale to +127 & -127 for 8 bits.

However, in actual systems with possibility of other modulation schemes e.g. QAM then you need to normalise all the levels to get unitary power.

For QPSK the .707 per I/Q gives a unitary power as I^2+Q^2 = 1

edit:

if power levels are different in the final signal, you are likely to have a lot of head butting with the RF engineer especially so with ofdm as peak/average power is very high.

Kaz