the difference between the upper and lower frequencies in a contiguous set of frequencies
2
votes
1answer
46 views
Bandwidth of a communication system
As a rule of thumb, the bandwidth of a communication system with a complex signal must be equal to the bit-rate or symbol-rate?
Besides, after reading this post, it is not clear for me how a ...
5
votes
1answer
73 views
Detecting the original bandwidth of upsampled recordings
I have a set of recordings sampled at 16khz, but some of them are upsampled from 11khz and some from 8khz. Quite some of the recordings are noisy. What is the best way to classify the recordings ...
0
votes
0answers
22 views
Spectrum analyser and resolution bandwidth
For the preliminary part of a lab I had to do, I was asked the following question:
I get how to do 1.1, but with 1.2, I really don't get what's going on; I really would've thought that the ...
2
votes
1answer
40 views
Laser diode bitrate datasheet
I'm a student studying communications engineering. I'm trying to understand why this particular laser diode is made for 155 Mbps and 622 Mbps. I'm thinking that the bitrate is entirely dependent ...
2
votes
0answers
39 views
Varying signal bandwidth with two signal generators
I would like to emulate a signal with bandwidth (like BPSK) for some testing, but the two signal generators I have access to do not have any BPSK options installed. If I know the frequency (2462MHz) ...
2
votes
0answers
56 views
Calculating a filter's attenuation at a certain frequency from the Q-factor
I'm using the Web Audio API to make a graphic EQ with four BiQuad filters; a highpass, two bandpass and a low pass:
You can see each node representing each filter's frequency. It's working nicely ...
5
votes
3answers
166 views
What is the ideal FIR length, given a specific pulse length?
I am trying to ascertain what the 'ideal' FIR filter length should be, given the pulse length $T_p$ of a windowed sinusoid in noise that I seek to filter.
As parameters into an FIR filter that I ...
4
votes
1answer
187 views
What is the bandwidth of product of two signals?
For signal $x(t)$ with bandwidth $B_x$ and signal $y(t)$ with bandwidth $B_y$, what will the bandwidth of the signal $z(t)=x(t)y(t)$ be?
0
votes
1answer
209 views
How bandwidth is used in modulation
In a typical Digital cable environment in the US, the spectrum is divided into 6MHz bands. When a tuner locks to a signal at say 800MHz, I would assume that the band for that signal is 797 - 803 MHz. ...
5
votes
1answer
1k views
Relating Bandwidth and Wavelength of a carrier
This came from a homework question, which I've solved. Just need some clarification.
I am asked to determine the bandwidth in a given amount of spectrum at a given wavelength. To find this, I know ...
7
votes
3answers
679 views
What is the bandwidth of a (real) sinusoidal tone, and pulse?
I would like to know how to go about calculating the bandwidth of:
1) A constant (real) sinusoidal tone
2) A (real) sinusoidal pulse.
The question is as simple as that, but I am having a hard time ...
3
votes
1answer
3k views
Bandwidth of a signal using MATLAB
I need to find the bandwidth the signal $x = 50 \operatorname{sinc}(125(t-10))^2$.
(Where $\operatorname{sinc}(x)=\dfrac{\sin (\pi x)}{\pi x}$ [normalized] or $\operatorname{sinc}(x)=\dfrac{\sin ...
4
votes
1answer
237 views
Multiband processing in one pass
I want to split signal in multiple bands and process each band. Number of bands is not yet determined, but it would be more then 6 and less then 11 (depending on the collected results)
As ...
6
votes
2answers
1k views
How are time resolution and signal bandwidth related?
I am confused by the dual concepts of time-resolution and bandwidth. Often I will hear that a pulse-compressed radar application 'doesnt have enough BW' for some specific time resolution that is ...
