Talk:Code-division multiple access: Difference between revisions

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::The above two paragraphs are utter nonsense. <em>Every</em> multiple access system has a capacity limit. That capacity is very well defined with FDMA and TDMA; assign all the frequency or time slots and there aren't any more. The CDMA capacity limit is less well defined but, I emphasize, considerably higher than that of either FDMA or TDMA when used in a cellular telephone network with frequency reuse. Part of this comes from voice activity detection, transmitting only when you have something to say, reducing average interference levels when it would be impractical to reallocate time or frequency slots so rapidly. Most comes from the inherent interference resistance that allows full reuse of frequency channels by all cells instead of allowing only a subset of channels to be used at each cell site to protect its neighbors. The full derivation of the system capacity of CDMA is in <ref> Gilhousen, Jacobs, et al, "On the Capacity of a Cellular CDMA System", IEEE Transactions on Vehicular Technology, May 1991</ref>. Disclaimer: I work for Qualcomm. I dare say we've been pretty successful with CDMA despite having fallen asleep in high school calculus. But <em>don't</em> believe me. Check it all out for yourself. [[User:Karn|Karn]] ([[User talk:Karn|talk]]) 08:40, 16 September 2008 (UTC)
 
::Maybe you have a point but it is lost in words. "What do you consider will happen in a town where every time there was a read light request was issued for every car in the queue to fine a new car to line up for them" - do you understand yourself what you saying? <small><span class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:64.114.27.59}12:23, 16 January 2007|64.114.27.59}12:23, 16 January 2007]] ([[User talk:64.114.27.59}12:23, 16 January 2007|talk]] • [[Special:Contributions/64.114.27.59}12:23, 16 January 2007|contribs]]) </span></small><!-- Template:Unsigned -->
 
== TDMA/GSM are DIGITAL cellular/PCS technologies – very poor CDMA Comparisons ==