How to add AWGN white noise in a 2d vector
8 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Taimoor
am 12 Okt. 2013
Bearbeitet: Sean de Wolski
am 14 Okt. 2013
mixed_ocr is a vector of 350x250. im receiving an error with the following code..please help
CODE :
clc
A1 = load('mixed_ocr.mat');
mixd_ocr = (A1.mixed_ocr);
y = awgn(mixd_ocr,10,'measured');
ERROR:
??? Error using ==> plus
Integers can only be combined with integers of the same class, or scalar doubles.
Error in ==> awgn at 272
y = sig+wgn(size(sig,1), size(sig,2), noisePower, 1, state, pMode, opType);
Error in ==> PARTA_Q3 at 4
y = awgn(mixd_ocr,10,'measured');
1 Kommentar
Nishitha Ayyalapu
am 14 Okt. 2013
It works fine with the data I worked on:
A = rand(350,250);
y = awgn(A,10,'measured');
The problem might be in the .mat you loaded. More information on your 350x250 you loaded would help to resolve the error.
Akzeptierte Antwort
Wayne King
am 14 Okt. 2013
Bearbeitet: Wayne King
am 14 Okt. 2013
I think you should try casting the mixd_ocr matrix to double.
mixd_ocr = double(mixd_ocr);
If you execute
class(mixd_ocr) % before you cast to double
You'll probably see the issue. For example:
X = randn(350,250);
X = int8(X);
y = awgn(X,10,'measured');
gives the same error you are seeing.
0 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Propagation and Channel Models finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!