Questions tagged [simulink]
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19
questions
0
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1answer
24 views
Help in designing filter for DUC (Digital Up-Converter) and DDC (Digital Down-Converter) using the built-in DUC and DDC blocks in MATLAB Simulink
Can anyone please help me in simulating a simple BPSK transceiver system that correctly receives a signal through a DUC and DDC? I have attached the screenshot of my Simulink system along with ...
0
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0answers
19 views
QPSK matlab/simulink Quantisation effects
I am trying to simulate the effects of quantization of an ADC on different waveforms (e.g. QPSK,8PSK) in Simulink.
For the case of QPSK the default BER curve would be generated with 2 bits per symbol ...
2
votes
0answers
31 views
Simulink cross correlation issue
here is the Simulink model that i'm using :
The matlab function script :
function tau = fcn(sig,refsig)
tau = gccphat(sig,refsig);
The errors :
2
votes
0answers
70 views
Understanding and converting Matlab's coarse frequency compensation function
I am trying to understand and convert to C Matlab's coarse frequency compensator the documentation for which can be found here: Documentation
Matlab's design itself is based on this IEEE paper: ...
1
vote
1answer
55 views
Understanding Matlab's Automatic Gain Control function
I am trying to understand the automatic gain control block provided by the communications toolbox. The documentation is here: Documentation
My questions are in regards to two of the configurable ...
0
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0answers
28 views
How to make SL to RF inport in simulink work real time?
I am using qam in the simulink and need to upconvert the complex baseband data and obtain the time domain passband signal.
I pass the complex baseband data to SL to RF inport and then do the ...
1
vote
1answer
90 views
Length of Matlab Raised Cosine Filter Output Complex Vector
If I instantiate in Matlab a filter, a vector, and use them in the following way:
...
0
votes
1answer
79 views
Translating Matlab scrambler function to C
I am trying to implement the following matlab function in c:
Mathworks scrambler Function Documentation
This is the code I've written:
...
2
votes
0answers
50 views
Role of Riccati Equations in Kalman Filter Design
I am working on a Kalman Filter (KF) design problem and I am struggling to understand the role of the Riccati equations in the design process of a KF.
Some sources discuss the importance of Riccati ...
0
votes
1answer
791 views
How to model state space for complex valued system correctly in SIMULINK (MATLAB)?
When trying to use the default state-space model block, if there is a complex number valued in the matrices, there will be an error
To resolve that, firstly I need to look at pseudo reference model ...
0
votes
1answer
172 views
“Revolving” QPSK Constellation
I am trying to code a QPSK transmitter in VHDL but first I want to create one out of Simulink blocks and translate it into VHDL code. I am using an example project for the PlutoSDR as a guide.
This ...
1
vote
1answer
221 views
DFT (FFT) of Non Uniformly Sampled Signal
I am trying to perform an FFT of a non-uniformly sample signal. My input comes from Simulink and PLECS which uses variable-time solver.
So far, I have used ...
0
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0answers
71 views
Plot Background Noise
I am a total newbie in signal processing.
I have been trying to plot on simulink a time/frequency domain noise in PLC (Powerline Communication) that matches a real-world research "...
0
votes
1answer
22 views
How do I simulate a purely real signal being received on multiple antennae in an array?
I have a signal created at baseband and then transmitted as $$\Re\{s_{bb}*e^{2\pi f_ct}\}$$ which is then received at a 5 element array for further processing. How do I interpret the real signal at ...
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0answers
10 views
variable factors in Simulimk
In my simulation of an equation in Simulink, I need to have variable factors the same as shown in following picture but Simulink doesn't accept that. how I can solve this problem?
-1
votes
1answer
610 views
Signal envelope
I have a relatively low-frequency signal and want to calculate the peak envelope of it in Simulink. I tried some of filters but the envelope is not well precise. can anyone help, how can I do it?
0
votes
1answer
182 views
Amplitude value after a Discrete-Time integration calculation?
I am using Matlab block Discrete-Time
Integrator on Simulink and I would like to know in advance, what output of that block regarding to its amplitude and the current sampling frequency would be.
...
-1
votes
1answer
145 views
signal saturation [duplicate]
My signal is an actuator displacement signal. It is a sinusoidal signal with the max amplitude of 10cm. I want to clip amplitude at 7 cm in Simulink. But with saturation block, I will get flat ...
5
votes
2answers
3k views
Inverse system in Simulink
I have the following inverse system
$$G(s)= s^2 + 2s + 3$$
How do I implement it in Simulink? Note that the transfer function is only accepted if and only if the order of the numerator is less than ...
