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Re: BPSK BW Requirement

Reply posted 9 months ago (09/04/2023)
Many thanks for the assistance. I read Proakis Digital Communications text book and a tutorial on Shannon in ComplextoReal, the bandwidth is equal to the symbol...

Re: BPSK BW Requirement

Reply posted 9 months ago (09/01/2023)
Many thanks for your explanation.In the message,  it states that the 3dB of BPSK is the symbol rate.I thought that the first null either side of Fc every 1/symbol...

BPSK BW Requirement

New thread started 9 months ago
I captured a BPSK waveform at RF on a spectrum analyser.  I need to determine the 99% bandwidth.  I have a CSV plot. Does anyone knows how to determine 99% BW...

Re: Determine Classical Phase Noise from EVM

Reply posted 2 years ago (03/01/2022)
Thank you. I shall look into this. To determine the classical phase noise of PLL from EVM, do you need to know the integration BW.I understand that integration BW...

Re: Determine Classical Phase Noise from EVM

Reply posted 2 years ago (03/01/2022)
My email address is sjraza996@gmail.com 

Re: Determine Classical Phase Noise from EVM

Reply posted 2 years ago (03/01/2022)
Hello,There is no link to the paper. Could you please re-send? Thank you 

Re: Complex IF

Reply posted 3 years ago (09/19/2021)
This is in reference to Python.I also ran the Matlab code.  Does it just plot one graph (Fig.1) showing a complex waveform? 

Re: Complex IF

Reply posted 3 years ago (09/19/2021)
I get an error when I run the code in Spyder.divide by zero encountered in log10 psd_dB = 10 * np.log10(psd)

Re: Complex IF

Reply posted 3 years ago (09/18/2021)
Thank you for the code.I like to  get a common understanding. I can see in the last graph that the spectrum have been inverted due to I and Q being reversed so...

Re: Complex IF

Reply posted 3 years ago (09/17/2021)
I read one of the message that swapping I and Q (like in the case described earlier)effectively spectrally invert the waveform. Swapping I and Q reverses all the...

Re: Complex IF

Reply posted 3 years ago (09/17/2021)
Many thanks for the explanation. Do I take it the overall waveform would be the same on the spectrum analyser (upconverted signal at f1, image)?For Rx down-conversion,...

Re: Complex IF

Reply posted 3 years ago (09/17/2021)
Hello I done some calculations just to prove for myself but the angles calculated are different.  Real=0.5. Imag=0.9 Phase = arctan (0.9/0.5) = 60.9deg now...

Complex IF

New thread started 3 years ago
HelloI am building up a RF transceiver using integrated up/down converter chip.This particular chip requires a complex Intermediate Frequency as inputs for up conversion...

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