. "Z(MSM 262200022)" . . . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ" . . "RIV/00216305:26220/03:PU40128" . "598301" . "\u0160ilhav\u00FD, Pavel" . "ADSL, VDSL, TEQ, equalization"@en . "2003" . "1-5" . "5"^^ . . . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ"@en . "26220" . "CZ - \u010Cesk\u00E1 republika" . "2"^^ . "V \u010Dl\u00E1nku je pops\u00E1no n\u011Bkolik z\u00E1kladn\u00EDch metod n\u00E1vrhu TEQ ( Time-Domain Equalizer ) equaliz\u00E9ru. Equalizace v \u010Dasov\u00E9 oblasti se vyu\u017E\u00EDv\u00E1 p\u0159edev\u0161\u00EDm k odstran\u011Bn\u00ED tzv. ISI (Inter Symbol Interferencis), tedy mezisymbolov\u00FDch interferenc\u00ED. K jejich vzniku doch\u00E1z\u00ED vlivem nelinearity p\u0159enosov\u00E9ho kan\u00E1lu. To m\u00E1 za n\u00E1sledek zkreslen\u00ED za\u010D\u00E1tku ka\u017Ed\u00E9ho p\u0159en\u00E1\u0161en\u00E9ho symbolu. D\u016Fle\u017Eit\u00FDm pomocn\u00EDkem v boji s ISI je cyklick\u00E1 p\u0159edpona (CP), kter\u00E1 se vkl\u00E1d\u00E1 p\u0159ed ka\u017Ed\u00FD p\u0159en\u00E1\u0161en\u00FD symbol, a kter\u00E1 tak vytv\u00E1\u0159\u00ED ochrann\u00FD interval mezi ssymboly. Vznikl\u00E9 zkreslen\u00ED tud\u00ED\u017E postihne cyklickou p\u0159edponu a samotn\u00FD symbol z\u016Fstane nezkreslen. To ale plat\u00ED jen v tom p\u0159\u00EDpad\u011B , kdy d\u00E9lka CP je rovna, nebo v\u011Bt\u0161\u00ED, jako impulsn\u00ED odezva kan\u00E1lu. A pr\u00E1v\u011B TEQ equaliz\u00E9r m\u00E1 za \u00FAkol upravit (zkr\u00E1tit) impulsn\u00EDodezvu p\u0159enosov\u00E9ho kan\u00E1lu tak, aby uveden\u00E1 podm\u00EDnka byla spln\u011Bna. TEQ equaliz\u00E9r je v\u011Bt\u0161inou realizov\u00E1n pomoc\u00ED filtr\u016F FIR. P\u0159i n\u00E1rhu TEQ equaliz\u00E9ru jde tedy o n\u00E1vrh koeficient\u016F FIR filtru." . . "2"^^ . "Elektrorevue - Internetov\u00FD \u010Dasopis (http://www.elektrorevue.cz)" . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ"@en . "10" . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ"@cs . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ" . . . . "Anal\u00FDza n\u00E1vrhov\u00FDch metod TEQ"@cs . "[7E8045D937D4]" . . . . . . . "V \u010Dl\u00E1nku je pops\u00E1no n\u011Bkolik z\u00E1kladn\u00EDch metod n\u00E1vrhu TEQ ( Time-Domain Equalizer ) equaliz\u00E9ru. Equalizace v \u010Dasov\u00E9 oblasti se vyu\u017E\u00EDv\u00E1 p\u0159edev\u0161\u00EDm k odstran\u011Bn\u00ED tzv. ISI (Inter Symbol Interferencis), tedy mezisymbolov\u00FDch interferenc\u00ED. K jejich vzniku doch\u00E1z\u00ED vlivem nelinearity p\u0159enosov\u00E9ho kan\u00E1lu. To m\u00E1 za n\u00E1sledek zkreslen\u00ED za\u010D\u00E1tku ka\u017Ed\u00E9ho p\u0159en\u00E1\u0161en\u00E9ho symbolu. D\u016Fle\u017Eit\u00FDm pomocn\u00EDkem v boji s ISI je cyklick\u00E1 p\u0159edpona (CP), kter\u00E1 se vkl\u00E1d\u00E1 p\u0159ed ka\u017Ed\u00FD p\u0159en\u00E1\u0161en\u00FD symbol, a kter\u00E1 tak vytv\u00E1\u0159\u00ED ochrann\u00FD interval mezi ssymboly. Vznikl\u00E9 zkreslen\u00ED tud\u00ED\u017E postihne cyklickou p\u0159edponu a samotn\u00FD symbol z\u016Fstane nezkreslen. To ale plat\u00ED jen v tom p\u0159\u00EDpad\u011B , kdy d\u00E9lka CP je rovna, nebo v\u011Bt\u0161\u00ED, jako impulsn\u00ED odezva kan\u00E1lu. A pr\u00E1v\u011B TEQ equaliz\u00E9r m\u00E1 za \u00FAkol upravit (zkr\u00E1tit) impulsn\u00EDodezvu p\u0159enosov\u00E9ho kan\u00E1lu tak, aby uveden\u00E1 podm\u00EDnka byla spln\u011Bna. TEQ equaliz\u00E9r je v\u011Bt\u0161inou realizov\u00E1n pomoc\u00ED filtr\u016F FIR. P\u0159i n\u00E1rhu TEQ equaliz\u00E9ru jde tedy o n\u00E1vrh koeficient\u016F FIR filtru."@cs . "Grego\u0159ica, Miroslav" . "."@en . "1213-1539" . . "RIV/00216305:26220/03:PU40128!RIV06-MSM-26220___" .