Hanojhan Rajahrajasingh
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Provide your first answer ever to someone else's question
Awarded to Hanojhan Rajahrajasingh on 13 Oct 2022
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Awarded to Hanojhan Rajahrajasingh on 28 Sep 2022
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How to calculate BER vs. SNR in ACO-OFDM system over VLC channel?
Did you find a solution to this problem?
environ un an il y a | 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 ...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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 ...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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 ( ...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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 ( ...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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 ( ...
plus d'un an il y a | 1 réponse | 0
1
réponseHow 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...
plus d'un an il y a | 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 ( ...
plus d'un an il y a | 1 réponse | 0
0
réponseHi! 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...
plus d'un an il y a | 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 ( ...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
0
réponseQuestion
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...
plus d'un an il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus d'un an il y a | 1 réponse | 0
1
réponse
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