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Altera_Forum
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17 years ago

OFDM using DSP Builder

Hi, I'm trying to implement a simplistic (4 channel) QPSK OFDM transmitter/receiver using Altera's DSP Builder and Megacore IP in Simulink. Let me just mention that I have very basic knowl...
Altera_Forum's avatar
Altera_Forum
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17 years ago

Hi Kaz,

So I'm back in Matlab making the changes you suggested. Things are starting to make sense. I just have 1 questions/problem now.

The output of the Altera IFFT, I used the Matlab bitshift function to implement the 2^-exponent scaling. The output of Matlab IFFT and Alera IFFT do not match when I do this. Although if I change 2^-exponent to 2^exponent, then it comes out to be the same (change -outaltexp to outaltexp, on line 27 in fftTestMatlab.m).

Next goal is to get the same output using DSP Builder.