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<tbody><tr><td class="headercell" width="70%" height="20"> QPSK Simulation
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<td valign="top" width="89"><b>Author:</b></td>
<td colspan="2"><a href="http://www.mathworks.com/matlabcentral/fileexchange/loadAuthor.do?objectType=author&objectId=1097355">M G</a></td>
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<td valign="top" width="89" height="15"><b>Summary:</b></td>
<td colspan="2" height="15">qpsk simulation in matlab</td>
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<td valign="top" width="125" height="15"><b>MATLAB Release:</b></td>
<td colspan="2" valign="bottom" height="15">R14SP3</td>
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<td valign="top" width="135"><b>Description:</b></td>
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simulates a baseband qpsk system <br>
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<td valign="top" width="25%"><b>File Id:</b></td>
<td width="20%">15111</td>
<td valign="top" width="25%"><b>Average rating:</b></td>
<td width="29%">1.0</td>
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<td valign="top"><b>Size:</b></td>
<td>1 KB</td>
<td valign="top"><b># of reviews:</b></td>
<td>2</td>
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<td valign="top"><b>Submitted:</b></td>
<td>2007-05-24</td>
<td valign="top"><b>Downloads:</b></td>
<td>1788</td>
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<td>1</td>
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<td valign="top"><b>Keywords:</b></td>
<td colspan="3" valign="top">QPSK Simulation, baseband, communications, MATLAB</td>
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<br>
<!--Acknowledgements -->
<!--Acknowledgements -->
<br>
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<td width="286"> <b class="feh4blk"> User Reviews</b></td>
<td width="228"> <div class="small" align="right">Number
of Reviews: 2</div></td>
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<td bgcolor="#dcdfe4"><b>Date</b>: 2007-05-28<br>
<strong>From</strong>: Duane Hanselman (masteringmatlab@yahoo.com) <br>
<strong>Rating</strong>:
N/A
<br>
<strong>Comments</strong>: No need to download, here is the M-file contents:<br>
<br>
N = 1000;<br>
iter = 100;<br>
expSymErrs = 10;<br>
EbNo = 0:1:10;<br>
bitsnrdB = EbNo;<br>
bitsnrlin = 10.^(bitsnrdB/10);<br>
theo_berr = 0.5*erfc(sqrt(bitsnrlin));<br>
theo_serr = 1 - (1 - theo_berr).^2;<br>
semilogy(bitsnrdB,theo_berr,'m', bitsnrdB,theo_serr,'g');<br>
axis([0 max(EbNo) 1e-6 1]);<br>
grid on<br>
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