How can I implement this for loop in vector operation form?

1 次查看（过去 30 天）
MAWE
MAWE 2023-7-10
回答： Anuj 2023-7-10
I have this for loop that I would like to implement more efficiently
clear all;
clearvars;
N = 5;
Rs = 100*10^6;
Ts = 1/Rs;
J = 4;
Tsamp = Ts/J;
x = 2.*randi([0 1], N, 1)-1;
s = repelem(x,J);
n=0:N*J-1;
t = Tsamp.*n;
x_t=0;
%% This is the for loop
for nn=1:length(n)
x_t = x_t+ s(nn).*sinc(n-nn);
end
plot(t, x_t)
How can I do this?

请先登录，再回答此问题。

回答（1 个）

Anuj
Anuj 2023-7-10
Hi Mawe,
You can use parallel computing toolbox to use parfor to run the for loop parallelly, which would extensively reduce the computation time.
refer to this article - Parallel for-Loops (parfor) - MATLAB & Simulink - MathWorks India
or you can vertorize the inner for loop step with the following code -
x_t = sum(s .* sinc(n - (1:length(n))));
By vectorizing the code, we avoid the need for an explicit for loop, which can improve the execution speed and efficiency of the code.
NOTE - The vectorized version assumes that the dimensions of s and n are compatible for element-wise operations.

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by