Hanojhan Rajahrajasingh
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Provide your first answer ever to someone else's question
Awarded to Hanojhan Rajahrajasingh on 13 Oct 2022
Accept 2 answers given by other contributors
Awarded to Hanojhan Rajahrajasingh on 28 Sep 2022
Feeds
How to calculate BER vs. SNR in ACO-OFDM system over VLC channel?
Did you find a solution to this problem?
ungefär ett år ago | 0
Question
Why is the BER not changing even after changing the parameters in the channel model?
clc ; clear all; close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =16; % Size of ...
mer än ett år ago | 0 answers | 0
0
answersQuestion
Why do I receive "Error using RectangularQAMModulator"
% Set the OFDM and QAM parameters N = 64; % Number of subcarriers M = 16; % Size of QAM constellation CP = 16; % Cyclic prefi...
mer än ett år ago | 0 answers | 0
0
answersQuestion
How to modify modem.qammod for the latest MATLAB version?
clc ; clear all ; close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of ...
mer än ett år ago | 0 answers | 0
0
answersQuestion
How to modify this MMSE channel estimation code to accommodate optical OFDM
function H_MMSE = MMSE(RxP,TxP,N,pilotFrequency,h_CIR,SNR) noiseVar = 10^(SNR*0.1); Np=N/pilotFrequency; % Number of Pilots H...
mer än ett år ago | 0 answers | 0
0
answersQuestion
Why am I getting a poor BER vs SNR curve?
close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of the Constellation ( ...
mer än ett år ago | 0 answers | 0
0
answersQuestion
How do I fix this? "Index exceeds the number of array elements. Index must not exceed 128."
close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of the Constellation ( ...
mer än ett år ago | 1 answer | 0
1
answerQuestion
How do I modify this code in order to estimate the channel without using the pilot location?
function [H_MMSE] = MMSEesti(Y,Xp,pilot_loc,Nfft,Nps,h,SNR) % MMSE channel estimation function % Inputs: % Y = Frequency-doma...
mer än ett år ago | 0 answers | 0
0
answersQuestion
How do I fix this? "Index in position 2 exceeds array bounds (must not exceed 1)."
close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of the Constellation ( ...
mer än ett år ago | 1 answer | 0
1
answerHow to have Logging in Matlab
Appologies for my previous response. Can you be more specific about your project? Here is an example of data logging in MATL...
mer än ett år ago | 1
Question
How to fix this error? "Index in position 2 exceeds array bounds (must not exceed 1)."
close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of the Constellation ( ...
mer än ett år ago | 0 answers | 0
0
answersHi! How can I create a conditional statement from checking if an array is empty? I will paste my non-working code here.
A = zeros(0,2,2); TF = isempty(A); GRRRRR = double(TF); if GRRRRR == 1 fprintf('No match has been found throughout whole...
mer än ett år ago | 0
Question
Why am I getting this error "not enough argument"
close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of the Constellation ( ...
mer än ett år ago | 1 answer | 0
1
answerQuestion
I'm getting this error when I tried to select a custom number of images for training and validation "Index in position 3 exceeds array bounds (must not exceed 1)."
%% Inicializes the IDE enviornement clc clear close all %% Load the Image data % Images trainImagesFile = "train-images-id...
mer än ett år ago | 0 answers | 0
0
answersQuestion
After adding the channel model to the code the BER vs SNR curve doesn't look realistic. What went wrong in the code?
clc ; clear all ; close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =16; % Size of...
mer än ett år ago | 0 answers | 0
0
answersQuestion
After adding the channel model to the code the BER vs SNR curve doesn't look realistic. What went wrong in the code?
clc ; clear all ; close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =16; % Size of...
mer än ett år ago | 0 answers | 0
0
answersQuestion
why do I get this error while using qammod? "Expected input number 1, X, to be an array with all of the values < 4."
N=256; % Number of subcarriers or size of IFFT/FFT N_data_symbol=128; % Number of symbol to IFFT GI=N/4; % Guard interval 1...
mer än ett år ago | 1 answer | 0
1
answerQuestion
When I run this code to depict the performance of a DCO-OFDM system, I'm getting an error with the randi function. Can you help me fix it?
clc ; clear all ; close all ; m =512; % Total number of OFDM symbols N =1024; % Length of each OFDM symbol M =4; % Size of ...
mer än ett år ago | 1 answer | 0
1
answer
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