hcommlac.htm

Proakis《contemporarycommunication systems using matlab》matlab源代码

<TITLE>Communications Toolbox Multiple Access</TITLE>
<h2>Multiple Access</h2>
The Multiple Access category contains a SIMULINK 
<A RUN="com_mlac">Multiple Access Library</A> that
includes analog time division multiple access (TDMA),
digital TDMA function blocks, and frequency division
multiple access (FDMA), and code division multiple 
access (CDMA) examples. There is no MATLAB function directly designed with
multiple access. Use the functions provided
in the Modulation and Demodulation category and the
filters provided in the Signal Processing Toolbox.
<p>

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

<A RUN="closebut(gcf);F0=50;F2=80;F4=110;ts=.002;[num0,den0]=butter(2,F0/2*ts);[num4,den4]=butter(2,F4/2*ts);[num2,den2]=butter(2,F2/2*ts);tstfdma;">
Example of using FDMA</A> for three signal multiple access.
<dl>
<dd><A RUN="F0=50;F2=80;F4=110;ts=.002;[num0,den0]=butter(2,F0/2*ts);[num4,den4]=butter(2,F4/2*ts);[num2,den2]=butter(2,F2/2*ts);tstfdma;junk=rk45('tstfdma',2);clear junk;">
Start the simulation for a two minute simulation.</A>
<dd>In this example, three modulated signals use the 
same transmitting channel. The plot shows
the three original signals on the transmitting side
and the three recovered signals on the receiving side.<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>

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