Re: IQ and complex signals tutorial

2021-02-02 Thread Christophe Seguinot
Hi Thanks to Achilleas for his kind advices. In fact my personal notation (issued for my lecture to master students) is conflicting with some other notation found in the literature (may be my books are outdated, I've been teaching this for 35

Re: IQ and complex signals tutorial

2021-02-01 Thread Achilleas Anastasopoulos
Hi Crostophe, thank you for this wonderful tutorial. You may want to use the more standard terms: "pre-envelope" m_+(t) = m(t) + j \hat{m}(t) (ie, the signal you currently denote as \tilde{m}(t)) "complex-envelope", \tilde{m}(t) (for the signal you currently denote as m^{bb}(t) ) thank you

Re: IQ and complex signals tutorial

2021-02-01 Thread Aditya Arun Kumar
Beautiful! On Mon, Feb 1, 2021 at 8:50 PM Christophe Seguinot < christophe.segui...@orange.fr> wrote: > Hi > > Two months ago we had long discussions about why GNURadio was using > complex signal, and what really is such a signal. > > We talked about 'spinning dancer' 'sampling the data twice',

IQ and complex signals tutorial

2021-02-01 Thread Christophe Seguinot
Hi Two months ago we had long discussions about why GNURadio was using complex signal, and what really is such a signal.  We talked about 'spinning dancer' 'sampling the data twice', and using "dogs as local oscillators". It was obvious that we need