I am assuming that you have an .m file like match_filter.m which has the
function defined as

function matchedFilterCoefs = match_filter(fc,K, tau,d)

you will call the filter function to generate the coeficients after providing
the arguments to this function. Then you should use either conv or filter
function to filter received signal Srx. The only difference in the usage will
be; convolution will give you m+n-1 samples in S whereas filter will return S
equal to Srx.

You can also write the logic for convolution yourself, its not that hard to
follow the equation.

-Amit Pathania

Jeff Brower wrote:
Istiaque-

> Thanks for ur reply. Let me explain my job little
more:
> I have to define a function for Matched filter in the range between -(Tp/2) to
(Tp/2).
>
> The equation is below-
> Smf = exp(-d*2*fc*tau - d*K*tau^2);
> here, tau= -(Tp/2):(Tp/2).
>
> Then, i have to convolv my one recereived signal (Srx) with the above Smf,
i.e. S=Sr*Smf.
>
> I have to call the matched_filter function from another .m file.
>
> That's what i have to do. Hope to hear from you. Thanks.

Please post to the group, not to me.

-Jeff

> Jeff Brower wrote:
> Ishtiaque-
>
>> I need to compress a chirp signal using convolution i.e. by Matched filtering
in Matlab.
>> *Can anybody write the steps how to do this in Matlab??
>> *How can I define an Impulse function and of what kind should it be? What
should I do with
>> this impulse function?
>
> Just use MATLAB convolution function. Convolution is filtering, which is what
you're trying to do. "Matched"
> filtering just means to select something very application-specific as the
filter.
>
> -Jeff

Reply by Jeff Brower●February 2, 20082008-02-02

Istiaque-

> Thanks for ur reply. Let me explain my job little
more:
> I have to define a function for Matched filter in the range between -(Tp/2)
to (Tp/2).
>
> The equation is below-
> Smf = exp(-d*2*fc*tau - d*K*tau^2);
> here, tau= -(Tp/2):(Tp/2).
>
> Then, i have to convolv my one recereived signal (Srx) with the above Smf,
i.e. S=Sr*Smf.
>
> I have to call the matched_filter function from another .m file.
>
> That's what i have to do. Hope to hear from you. Thanks.

Please post to the group, not to me.

-Jeff

> Jeff Brower wrote:
> Ishtiaque-
>
>> I need to compress a chirp signal using convolution i.e. by Matched filtering
in Matlab.
>> *Can anybody write the steps how to do this in Matlab??
>> *How can I define an Impulse function and of what kind should it be? What
should I do with
>> this impulse function?
>
> Just use MATLAB convolution function. Convolution is filtering, which is what
you're trying to do. "Matched"
> filtering just means to select something very application-specific as the
filter.
>
> -Jeff

Reply by Jeff Brower●February 2, 20082008-02-02

Ishtiaque-

> I need to compress a chirp signal using convolution
i.e. by Matched filtering in Matlab.
> *Can anybody write the steps how to do this in Matlab??
> *How can I define an Impulse function and of what kind should it be? What
should I do with
> this impulse function?

Just use MATLAB convolution function. Convolution is filtering, which is what
you're trying to do. "Matched"
filtering just means to select something very application-specific as the
filter.

-Jeff

Reply by Ishtiaque Ahmed●February 1, 20082008-02-01

hello,
I need to compress a chirp signal using convolution i.e. by Matched filtering
in Matlab.
*Can anybody write the steps how to do this in Matlab??
*How can I define an Impulse function and of what kind should it be? What
should I do with this impulse function?
Thanks.