how can i perform matched filtering using fft in matlab to improve the SNR?

22 次查看（过去 30 天）
ALEESHA JOJI
ALEESHA JOJI 2020-6-15
评论： ALEESHA JOJI 2020-6-21
my purpose is to improve the snr by matched filtering.For this i've tried the procedure which includes R = fft(r);
H = conj(fft(s));
h = ifft(H);
Y = R.*H;
y = real(ifft(Y));
still thers is no change in the snr.please help me asap..

请先登录，再回答此问题。

回答（1 个）

Shivam Kumar Singh
Shivam Kumar Singh 2020-6-18
Let's assume that s is your signal in time domain.
There are two ways of creating a matched filter.
1.Do it youself.
b = conj(s(end:-1:1));
y = filter(b,1,x);
2. Use the built-in function from https://www.mathworks.com/help/phased/ug/matched-filtering.html

类别

在 Help Center 和 File Exchange 中查找有关 Signal Processing Toolbox 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by