hcomfilt.htm

数字通信第四版原书的例程

<TITLE>Communications Toolbox Transmitting/Receiving Filters</TITLE>
<h2>Transmitting/Receiving Filters</h2>
The transmitting filter catagory includes raised cosine
filter, sinc filter, and Hilbert filter. This toolbox includes a
SIMULINK <A RUN="closebut(gcf);com_filt">Transmitting/Receiving Filter
Library</A> and the following MATLAB functions:
<dl>
<dd><b><a run="hthelp hank2sys">hank2sys</a></b> - Convert Hankel matrix to linear system.
<dd><b><a run="hthelp hilbiir">hilbiir</a></b> - Hilbert transform IIR filter.
<dd><b><a run="hthelp imp2sys">imp2sys</a></b> - FIR filter to IIR filter conversion.
<dd><b><a run="hthelp rcosflt">rcosflt</a></b> - Filtering signal using raised cosine filter.
<dd><b><a run="hthelp rcosine">rcosine</a></b> - Design raised cosine filter.
</dl>
<p>

You can view a list of 
 <a href="htb_filt.html">all SIMULINK blocks</a> in this category. <p>

<A RUN="closebut(gcf);r=rand;b=rcosfir(r);[n,d]=rcosiir(r);fi=filter(b,1,[1,zeros(1,49)]);ii=filter(n,d,[1,zeros(1,49)]);plot([fi;ii]');title(['comparing the impulse response of FIR with IIR with r = ',num2str(r)]);">Example: Comparing FIR and IIR raised cosine filters</A>.
This example uses the following MATLAB commands:
<dl>
<dd><tt>r=rand;
<dd>b=rcosfir(r);
<dd>[num,den]=rcosiir(r);
<dd>impfir=filter(b,1,[1,zeros(1,49)]);
<dd>impiir=filter(num,den,[1,zeros(1,49)]);
<dd>plot([impfir; impiir]');
<dd>title(['comparing the impulse response of FIR with IIR with r = ', num2str(r)]);
</tt></dl><p>

<dd><a href="commhelp.html">Return to the first page of the tutorial</a>
<dd><a href="hmfasb.html">Return to the functionality listing</a><p>

<tt><dd> This is hcomfrmt.html file.</tt>