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<p>the <a href="page.php?w=wave_propagation">wave propagation</a>, sometimes referred to as <b>shadow fading</b>.</p>

<p>A <b>fading channel</b> is a communication channel that experiences fading.</p>

<p><big>Key concepts</big></p>
<p>The presence of reflectors in the environment surrounding a transmitter and receiver create multiple paths that a transmitted signal can traverse.  As a result, the receiver sees the <a href="page.php?w=Superposition_principle">superposition</a> of multiple copies of the transmitted signal, each traversing a different path.</p><p>
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