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<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageWikiLink>	<http://cs.dbpedia.org/resource/GSM> .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://www.w3.org/2000/01/rdf-schema#comment>	"Digital AMPS, D-AMPS, p\u0159esn\u011Bji IS-54 nebo IS-136, je (dnes u\u017E historick\u00FD) syst\u00E9m mobiln\u00EDch telefon\u016F druh\u00E9 generace pou\u017E\u00EDvan\u00FD v letech 1990-2007 na obou americk\u00FDch kontinentech, p\u0159edev\u0161\u00EDm v USA a Kanad\u011B.Syst\u00E9m se obvykle naz\u00FDv\u00E1 jednodu\u0161e TDMA, co\u017E je zkratka pro technologii \u010Dasov\u00E9ho odd\u011Blen\u00ED umo\u017E\u0148uj\u00EDc\u00ED sou\u010Dasn\u00FD p\u0159enos n\u011Bkolika hovor\u016F v jednom kmito\u010Dtov\u00E9m kan\u00E1lu, kter\u00E1 je pou\u017E\u00EDvan\u00E1 i syst\u00E9mem GSM.Syst\u00E9m pou\u017E\u00EDv\u00E1 832 kan\u00E1l\u016F o \u0161\u00ED\u0159ce 30 kHz v p\u00E1smu 800 MHz."@cs .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageWikiLinkText>	"TDMA"@cs .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageWikiLinkText>	"D-AMPS (TDMA, IS-136)"@cs .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://www.w3.org/2000/01/rdf-schema#label>	"D-AMPS"@cs .
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<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageWikiLinkText>	"D-AMPS"@cs .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageWikiLinkText>	"IS-136"@cs .
<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/wikiPageRevisionID>	"15650929"^^<http://www.w3.org/2001/XMLSchema#integer> .
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<http://cs.dbpedia.org/resource/D-AMPS>	<http://dbpedia.org/ontology/abstract>	"Digital AMPS, D-AMPS, p\u0159esn\u011Bji IS-54 nebo IS-136, je (dnes u\u017E historick\u00FD) syst\u00E9m mobiln\u00EDch telefon\u016F druh\u00E9 generace pou\u017E\u00EDvan\u00FD v letech 1990-2007 na obou americk\u00FDch kontinentech, p\u0159edev\u0161\u00EDm v USA a Kanad\u011B.Syst\u00E9m se obvykle naz\u00FDv\u00E1 jednodu\u0161e TDMA, co\u017E je zkratka pro technologii \u010Dasov\u00E9ho odd\u011Blen\u00ED umo\u017E\u0148uj\u00EDc\u00ED sou\u010Dasn\u00FD p\u0159enos n\u011Bkolika hovor\u016F v jednom kmito\u010Dtov\u00E9m kan\u00E1lu, kter\u00E1 je pou\u017E\u00EDvan\u00E1 i syst\u00E9mem GSM.Syst\u00E9m pou\u017E\u00EDv\u00E1 832 kan\u00E1l\u016F o \u0161\u00ED\u0159ce 30 kHz v p\u00E1smu 800 MHz. Ka\u017Ed\u00FD kan\u00E1l v jedn\u00E9 bu\u0148ce m\u016F\u017Ee b\u00FDt sou\u010Dasn\u011B vyu\u017E\u00EDv\u00E1n a\u017E 3 mobiln\u00EDmi stanicemi. Zaj\u00EDmavost\u00ED je, \u017Ee mohl koexistovat se star\u0161\u00EDm analogov\u00FDm syst\u00E9mem AMPS. V porovn\u00E1n\u00ED s n\u00EDm p\u0159inesl lep\u0161\u00ED ochranu proti odposlechu, del\u0161\u00ED v\u00FDdr\u017E bateri\u00ED u mobiln\u00EDch telefon\u016F a p\u0159edev\u0161\u00EDm beze\u0161v\u00FD roaming, p\u0159i kter\u00E9m je m\u016F\u017Ee mobiln\u00ED \u00FA\u010Dastn\u00EDk m\u011Bnit svoji polohu bez nutnosti manu\u00E1ln\u00ED registrace.D-AMPS pou\u017E\u00EDv\u00E1 7C/4 diferenci\u00E1ln\u00ED kvadraturn\u00ED modulaci f\u00E1zov\u00FDm posuvem (DQPSK), ozna\u010Dovanou t\u00E9\u017E jako diferenci\u00E1ln\u00ED 7t/4 4-PSK nebo \u03C0/4 DQPSK s bitovou rychlost\u00ED 48.6 kbit/s na kan\u00E1l \u0161\u00ED\u0159ky 30 kHz. V\u00FDsledn\u00E1 efektivita 1.62 bit/s/Hz je o 20% lep\u0161\u00ED ne\u017E u GSM. Nev\u00FDhodou je men\u0161\u00ED v\u00FDkonov\u00E1 efektivita, co\u017E znamen\u00E1 men\u0161\u00ED v\u00FDdr\u017E bateri\u00ED mobiln\u00EDch telefon\u016F."@cs .