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Difference between fft and pspectrum in Matlab

Started by mk2022 2 weeks ago3 replieslatest reply 2 weeks ago117 views
Hello!What is difference between using the fft() or pspectrum() command in Matlab on a time-series signal? My understanding is that the fft command computes the...

Soft-output Hamming decoder

Started by cooltafel 1 year ago1 replylatest reply 1 year ago114 views
Hello, I am implementing an SISO Hamming decoder in Matlab for (4,7) and (4,8) Hamming. The soft-input is coming from a soft demodulator, and the soft values are...

Algorithm testing via simulation in Scilab/Xcos

Started by steven01 2 years ago11 replieslatest reply 2 years ago336 views
Hello,I have been developing a library of control blocks (PID controller, various filters etc.) in C programming language. My goal is to have basic building stones...

Help on Noise Correlation Matrix

Started by M_313 4 years ago10 replieslatest reply 4 years ago261 views
I was trying to create a Noise Cross Correlation Matrix in Matlab by using the following code:N = 100; % Number of Samplesr1 = rand(1,N) + 1i*rand(1,N);r2 = rand(1,N)...

Overlap-add with window

Started by ctlee 4 years ago26 replieslatest reply 4 years ago1049 views
Hi all,Suppose I have an input signal \( x[n] \) of length \( N \), an FIR filter \( h[n] \) of length \( M \), and a window function \( w[n] \) of length \( N...

WLAN Demodulation in MATLAB

Started by cogwsn 5 years ago5 replieslatest reply 5 years ago237 views
I am using the WLAN Tool Box of #Matlab V2107b. A term named CSI for each data subcarrier is defined as CSI(i) = H(i) X conj(H(i)) + N(i)H(i) = channel estimate...

How to downconvert a Complex RF signal in Matlab?

Started by M_313 5 years ago14 replieslatest reply 5 years ago2663 views
Hi All,I was trying to simulate a digital communication model with a complex rayleigh fading channel in Matlab.The Data is BPSK modulated and is multiplied with...

Help on Demodulating an 8-PSK Signal

Started by M_313 5 years ago21 replieslatest reply 5 years ago763 views
Hi,I am trying to simulate an 8-PSK communication model in Matlab with real sequence. I have generated the tx signal as shown in the attached figure using 8 different...

Choice between Scilab and Python + numpy

Started by johnpote 5 years ago7 replieslatest reply 5 years ago4401 views
Hi everyone,I have a small bit of DSP to do related to work which has given me the oportunity to refresh prior DSP learning and expand it. I want to do this at home...

Visualizing the spectrum of a 433 MHz433 MHz signal in MATLAB

Started by NatiyaITD 5 years ago12 replieslatest reply 5 years ago952 views
I recorded a 433 MHz IQ signal with a SDR dongle as a .wav file and when I read it in #MATLAB, I see the following:This is the code:<code>[y,Fs] = audioread('HDSDR_SHORT_433920kHz_RF.wav',[5000000...

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