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Altera_Forum
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16 years ago

White Noise Spectrum

I have use a simple LFSR to generare random number to generate white noise. Set of random number are pass through to FFT(power in db vs freq). However, the freq response is increasing at low freq. Th...
Altera_Forum's avatar
Altera_Forum
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16 years ago

O.K. I took as granted, that you are using a maximum length LFSR. Apparently it's not the case. Read about primitive polynomials that

generate maximum length sequences, e.g. in:http://en.wikipedia.org/wiki/lfsr

Altera has a LFSR generator in the DDR2 IP test design, you'll also find various HDL code eamples on the internet.