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Graeme Lyon (@catslovejazz)

Currently working in medical research applying machine learning and DSP to biosignals

Re: Real or complex FFT on IQ data

Reply posted 7 years ago (04/03/2017)
Thank you again for your help on this! I am confused as to how the Re vs Im spectra relateĀ to the original I/Q data - is the information is "mixed" between the...

Re: Real or complex FFT on IQ data

Reply posted 7 years ago (04/03/2017)
Apologies for the confusion, The reason for mentioning phase was this is what I am ultimately interested in - I'm aware the FFT will have a complex output for either...

Re: Real or complex FFT on IQ data

Reply posted 7 years ago (04/03/2017)
Thanks for the answer. I don't fully understand your comment "doing the real FFT of each of the I and Q channels separately will show signals at plus and minus 1MHz".If...

Re: Real or complex FFT on IQ data

Reply posted 7 years ago (03/30/2017)
Thanks Tim, given the 90 degree phase shift I understand this reflects complex data but I am trying to get a grasp on how the information contained in the two approaches...

Real or complex FFT on IQ data

New thread started 7 years ago
If I have a pairĀ of quadrature signals I and Q which I want to perform FFTs on for spectral analysis. I am trying to understand what, if any, different information...

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