# Rishi Balasubramanian

Master of Applied Sciences in Electrical and Computer Engineering

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**Content Feed**

Question

Suggest an Alternate for Nonzero (nnz) built-in function

Hi, So I have a binary matrix of size 2000 by 256. I start with a standard all-zero matrix of size some 'X' by 256 as my colum...

2 months ago | 3 answers | 0

### 3

answersHow to get redundancy symbols (or complete codeword) after RS/BCH decoding using comm.BCHDecoder and comm.RSDecoder

Same problem 6 years later. Any solutions?

10 months ago | 0

BCH decoding algorithm in comm.BCHDecoder

Berklamp Massey Algorithm. The find the error locator polynomial to find the error locations.

10 months ago | 0

Question

BCH Encoder - Error Locations

Hello All, I am using the 'Communications Toolbox' and there is this 'comm.BCHDecoder' that I intend to use. A deeper study ab...

10 months ago | 0 answers | 0

### 0

answersQuestion

Change color of specific bits Imagesc(), Image()

Hi, I have a binary matrix, where my algorithm runs through to find inconsistencies and flip the respective bits as it goess ro...

10 months ago | 2 answers | 0

### 2

answersQuestion

How to read data from text file and store as it is with variables

I have this data file, it goes like phi1_32_1 = 1 phi2_32_1 = 32 phi1_32_2 = 1 phi2_32_2 = 33 phi1_32_3 = 1 phi2_32_3 =...

1 year ago | 1 answer | 0

### 1

answerQuestion

Matlab equivalent of rand() in C++

Hello, I am trying to adapt a C++ code to my Matlab project. In C++ there is this line random4 = rand() % item // Here th...

2 years ago | 1 answer | 0

### 1

answerQuestion

Is my LDPC BER curve right?

Hello, I am trying to simulate a 3/5 LDPC code. I have encoded it using the Systemic approximate Lower Triangular Encoding syst...

2 years ago | 0 answers | 0

### 0

answersQuestion

Add all subsequent rows with selected row

Hello, I have a mxn binary matrix H = [1 1 1 0 1 1 1; 0 1 0 0 1 0 1; 1 1 0 1 0 1 1; 1 1 1 0 0 0 0; 0...

2 years ago | 1 answer | 0

### 1

answerQuestion

Use Gaussian Jordan Elimination to convert binary matrix to All zero Matrix

Hello, Consider I have my binary matrix. I want to use Gauss Jordan Elimination to convert a part of my matrix to all zero. Bel...

2 years ago | 1 answer | 0

### 1

answerQuestion

Find rows in MATRIX based on position of elements

Consider I have a binary matrix H H = [1 1 0 1 1 0 0 1 0 1; 0 0 0 1 0 1 0 0 1 1; 0 1 1 0 1 0 1 0 0 1; 1 1 0 0...

2 years ago | 1 answer | 0

### 1

answerQuestion

My LDPC BER curve is bad

Hello, For my Masters Thesis, I am trying to simulate Quasi Cyclic Low-density Parity-Check Codes (QC - LDPC) codes on Matlab. ...

2 years ago | 0 answers | 0

### 0

answersQuestion

Run a function with input arguments using App Designer

I have a MATLAB script file (.m file) which is a function %It begins like this function M = qcldpc(j, k, a, b, p) I am trying...

2 years ago | 1 answer | 0

### 1

answerCreating dynamic variables using loops | Automatic Variables using loops

Okay, I kinda don't understand I guess, as I did not get the expected result from any of the answers, except Stephen's, but it h...

2 years ago | 0

Question

Creating dynamic variables using loops | Automatic Variables using loops

Hello, I believe that I am in a predicament. I have already read that trying to create variables from a loop (using eval like A...

2 years ago | 3 answers | 0

### 3

answersQuestion

Move multiple rows with exceptions

Hey Consider I have a mxn matrix of binary data. I want to move the rows with 1s in it corresponding to a particular column exc...

2 years ago | 1 answer | 0

### 1

answerQuestion

A switch case with multiple results or switch expressions?

Is such a switch case possible? If not, whats my workaround for it? switch r,d case d=1 && r=1 continue ca...

2 years ago | 2 answers | 0

### 2

answersQuestion

Move multiple rows to specified postion

Hello, I have a mxn matrix of binary data. I want to write a code where I move multiple rows to specified position or index. %...

2 years ago | 1 answer | 0

### 1

answerQuestion

Move multiple rows without swapping

Hello, I have a mxn matrix of binary data. I want to write a code where I find the rows in column n which have 1s in them and m...

2 years ago | 1 answer | 0

### 1

answerQuestion

Find the column with the least number of 1s (ones) in it | Find column with at least one non zero element

Consider I have a m by n matrix with binary data Is there a easy way to write a code that can identify the column with the leas...

2 years ago | 2 answers | 0

### 2

answersQuestion

Return the column(s) indices with minimum value which is not zero.

Consider a matrix H = 1x30. The data in those elements are numbers 0, 1, 2, ......, n I wanna be able select the column(s) wit...

2 years ago | 1 answer | 0

### 1

answerQuestion

Select the column with at least one 1 in it

Hey people Assume I have a m by n matrix of binary data. How would I be able to identify the column that has the least number o...

2 years ago | 1 answer | 0

### 1

answerQuestion

Move particular column to specified index

Hey assume I have a matrix 50x100 In an automated function I will be needing to select particular column, and move it to specif...

2 years ago | 1 answer | 0

### 1

answerQuestion

Select a row and append it at the end of a matrix | Move a selected row to end of matrix

Hello People, Assume i have a matrix H = [1 0 0 1 0 1 0 0 1 1 1 0 1 1 0 1 0 1 ...

2 years ago | 1 answer | 0