Questions tagged [amplitude-modulation]
The amplitude-modulation tag has no usage guidance.
4
questions
4
votes
3
answers
2k
views
Why Hilbert Transform is terrible choice for amplitude demodulation of broadband signals?
A reference answer empirically demonstrates that Hilbert envelope does not work well for the (amplitude) demodulation of a broadband signal. I am looking for the math which explains why...
2
votes
2
answers
2k
views
Amplitude modulation vs sampling rate?
As a sampled tone's frequency nears $f_s / 2$, amplitude modulation grows apparent:
("Actual" curve in grey; blue is what we get if taking samples (dots) "at face value"). This is ...
4
votes
1
answer
25k
views
Deriving SER & BER for 4QAM, 16QAM and 32QAM
Required to find symbol error rate vs $E_b/N_0$ for 4QAM, 16QAM & 32QAM. Thought that SER & BER are the same but did my research to find that BER is $1/\log_2(M)$ of SER. Could you please ...
1
vote
3
answers
699
views
Creating uneven sidebands with AM + PM modulation?
I am trying to modulate an optical signal such that I create a pair of sidebands with arbitrary phase and amplitude with respect to each other. For example I would be like to be able to modulate my ...