Hello, I apologize in advance If I sound not right.
To follow up on my inquiry:
Well, I get to know how to find the bandwidth, as our constellation
modulator uses some root raised cosine filter, it needs to have a roll-off
factor which in another way excess bandwidth. Bw=(1+alpha)*T =
(1+0.7)*(6250
Hello,
> I need the basic baseband signal (low frequency) but it would be a
0Hz frequency?
Yes, as said, it would be a band-limited signal around 0 Hz. That's the
definition of baseband signal.
I'm not sure what you mean with
> timing diagram is showing the signal has some certain frequency
A
Thank you for the clarification. I will update it to 3.8 soon.
However, baseband is the main signal which will be converted to RF signal
by means of upconverter. I have a SDR device(red-pitaya), in which two
digitally modulated baseband signals(I-Q) will come out separately and
later on with RF fr
Hi Md. Atiqur,
On Fri, 2020-02-14 at 20:43 +0100, Md. Atiqur Rahman wrote:
> For a QPSK modulation technique, I choose to set constellation point 1 to -1,
> hence 1.4142 would be amplitude
Ah, you're confusing the magnitude of the complex number with the
amplitude of the I and Q component.
So,
