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Ray


Active since 2013

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Using for loop to load multiple mat files of different names
Thanks that took care of the error that i had. Now i am trying to convert all the matrices from 18 by 18 matrices in each file i...

7 years ago | 0

Question


How does the indices inside select row change the input array
I am trying to understand the command "select row". I inserted in the indices of the select row block [5; 4; 3; 2; 1] which i th...

8 years ago | 0 answers | 0

0

answers

Question


How does the indices inside the select row block in simulink change the input data
I am trying to understand the command "select row". I inserted in the indices of the select row block [5; 4; 3; 2; 1] which i th...

8 years ago | 0 answers | 0

0

answers

Question


how to use select row in simulink
I am trying to understand the command "select row". I inserted in the indices of the select row block 54321 which i thought th...

8 years ago | 0 answers | 0

0

answers

Question


I have two loops, how can i get rid of the inner loop "for j=1:nSym"?
for i=1:length(EsN0dB), for j=1:nSym % %-----------------Transmitter-------------------- %---Generatin...

8 years ago | 1 answer | 0

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Question


I am confused if the way the code converting serial to parallel is correct or not. The comments says" convert serial to parallel" but the code below the comment does the opposite. Please advise. if you need the whole code, i can email it to you.
%% define the modems Tx/Rx switch typ case 1 Tx=modem.qammod('M',M); Rx=modem.qamdemod ('M',M)...

8 years ago | 1 answer | 0

1

answer

Question


i get this error "Subscript indices must either be real positive integers or logicals."
When i run this code, i get the above error. Subscript indices must either be real positive integers or logicals. Er...

8 years ago | 1 answer | 0

1

answer

Question


I am having problems with the plots. The two curves should look very close but there is a problem somewhere in my code
Hello, when i run this code, the plots that i get are not correct. The curves should be very close to each other but i think the...

9 years ago | 0 answers | 0

0

answers

Question


I have a 2D graph both x and y axis; however the x and y are in inches and i want to convert them into centimeter
I have a 2D graph both x and y axis; however the x and y are in inches and i want to convert them into centimeter. So the x and ...

9 years ago | 1 answer | 0

1

answer

Question


How to change the colors in colormap function
I have the expression below to plot the power with respect to x and y position. The colors vary based on the power level. I plot...

9 years ago | 2 answers | 0

2

answers

Question


I get an error when i use load command
for k = 1:length(matFiles) baseFileName = matFiles(k).name; fullFileName = fullfile(myFolder, baseFileName); fpr...

9 years ago | 0 answers | 0

0

answers

Question


alway get an error when i use a load command
% i made sure that the .mat files are in the same directory the myFolder directory specified below. The code was working fine bu...

9 years ago | 3 answers | 0

3

answers

Question


why do i get this error:the function nume1 is undefined
endrec_im_bin = reshape(rec_syms_cons',nume1(rec_syms_cons),1);} I get this error: Undefined function or variable 'n...

9 years ago | 1 answer | 0

1

answer

Question


using knnsearch for QPSK demodulation
rec_syms = knnsearch([real(symbol_book) imag(symbol_book)], [real(X_hat) imag(X_hat)]) - 1; I get this error: Error us...

9 years ago | 0 answers | 0

0

answers

Question


I get an error in knnsearch
rec_syms = knnsearch([real(symbol_book) imag(symbol_book)], [real(X_hat) imag(X_hat)]) - 1; I get this error: Error us...

9 years ago | 1 answer | 0

1

answer

Question


i get an error when i try to define type of modulation
This expression' mod_methods = ('BPSK','QPSK','8PSK','16QAM','32QAM','64QAM'); gives me this error Expression or st...

9 years ago | 1 answer | 0

1

answer

Question


I get this error "Subscript indices must either be real positive integers or logicals."
I have the following loop. It runs fine when r=1, but it gives me the following error when r=2 "Subscript indices must either b...

9 years ago | 3 answers | 0

3

answers

Question


I need help to simulate OFDM system
Hello, I am trying to simulate OFDM system however what i need help is on pilot insertion, removal, estimating the channel and i...

9 years ago | 0 answers | 0

0

answers

Question


using surf for 3D plot
Hello, I am trying to plot a power against x and y positions for multiple files. The positions are the same for all the files...

9 years ago | 1 answer | 0

1

answer

Question


separate x, y coordinate in a matrix into two different matrices
I have 18 by 18 matrix with each cell has [-1;1] [-1;1] etc.. I want to separate this matrix into two 18 by 18 matrices. The fir...

9 years ago | 3 answers | 0

3

answers

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how to plot in three dimension (3D)
Hi, I am trying to do a 3D plot for 18 by 18 matrix containing a first structure "positions" (x,y coordinates), and a second str...

9 years ago | 1 answer | 0

1

answer

Question


Combining several files with 18 by 18 matrix in each file into one single file with one single column
Hello all, I have several .mat files each .mat file contains 18 by 18 data files. I am trying to combine each of the 18 by 1...

9 years ago | 1 answer | 0

1

answer

Answered
Using for loop to load multiple mat files of different names
Hello Konstantinos Sofos, Your code seems to be working as far reading the files, however after reading several files, i get ...

9 years ago | 2

Question


speech recognition with dynamic programming and mel filtering
Hi, I am currently working on a speech recognition project using Dynamic programming with mel filtering. I am trying to recogniz...

11 years ago | 0 answers | 0

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