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Raisec Cosine Function

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```I am having hard time trying to find the difference between rcosine and rcosfir. I want to use the Square Root of Raised Cosine Function as the shaping pulse for my QPSK signal. I am wondering what functions should I use and how?
```
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Reply Listed 11/24/2009 6:19:21 PM

```"Listed Unlisted" <listedunlisted@yahoo.com> wrote in message <heh839\$ll1\$1@fred.mathworks.com>...
> I am having hard time trying to find the difference between rcosine and rcosfir. I want to use the Square Root of Raised Cosine Function as the shaping pulse for my QPSK signal. I am wondering what functions should I use and how?

Hi, you can use

fdesign.pulseshaping() with the 'Square Root Raised Cosine'  shape.

See

>>doc fdesign.pulseshaping

Hope that helps,
Wayne
```
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Reply Wayne 11/24/2009 6:33:21 PM

```"Wayne King" <wmkingty@gmail.com> wrote in message <heh8th\$d1j\$1@fred.mathworks.com>...
> "Listed Unlisted" <listedunlisted@yahoo.com> wrote in message <heh839\$ll1\$1@fred.mathworks.com>...
> > I am having hard time trying to find the difference between rcosine and rcosfir. I want to use the Square Root of Raised Cosine Function as the shaping pulse for my QPSK signal. I am wondering what functions should I use and how?
>
> Hi, you can use
>
> fdesign.pulseshaping() with the 'Square Root Raised Cosine'  shape.
>
> See
>
> >>doc fdesign.pulseshaping
>
>
> Hope that helps,
> Wayne

Thank you for your help.

How to use that function though.

I have I bits and Q bits. And I have plotted it. Now I need to use the Square root of raised cosine function to each of the plots. How should I use it with your function.
```
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Reply Listed 11/25/2009 7:43:20 PM

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