http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Modulation_order 2026-10-26T20:23:01Z Revision history for this page on the wiki MediaWiki 1.43.1 http://debianws.lexgopc.com/wiki143/index.php?title=Modulation_order&diff=2636519&oldid=prev 2023-07-05T08:49:58Z

<p>Removed questionable and unreferenced attempt to draw parallels with analogue modulation.</p> <p><b>New page</b></p><div>{{Short description|Number of the different symbols that can be transmitted using a digital communication scheme}}<br /> {{Unreferenced stub|auto=yes|date=December 2009}}<br /> The &#039;&#039;&#039;modulation order&#039;&#039;&#039; of a digital communication scheme is determined by the number of the different symbols that can be transmitted using it.<br /> <br /> Modulation order can only be defined for [[digital modulation]]s. The simplest forms of digital modulation are of second order because they can transmit only two symbols (usually denoted as &quot;0&quot; and &quot;1&quot; or as &quot;-1&quot; and &quot;1&quot;). They are called &#039;&#039;binary shift keying&#039;&#039; (BSK).<br /> <br /> Modulations which have an order of 4 and above usually are termed as [[higher-order modulation]]s. Examples of these are &#039;&#039;quadrature phase shift keying&#039;&#039; ([[QPSK]]) and its generalisation as [[m-ary]] &#039;&#039;quadrature amplitude modulation&#039;&#039; (m-[[Quadrature amplitude modulation|QAM]]).<br /> <br /> Because existing computers and automation systems are based on binary logic most of the modulations have an order which is a power of two: 2, 4, 8, 16, etc. In principle, however, the order of a modulation can be any integer greater than one.<br /> <br /> [[Category:Telecommunication theory]]<br /> <br /> {{DEFAULTSORT:Modulation Order}}<br /> <br /> <br /> {{Tech-stub}}</div>

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