translating with the target reader in mind
translating with the target reader in mind
Latvian to English - Translation Technical/Telecommunications
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CDMA2000 mobilā datu pārraide CDMA2000 standartam ir vairākas attīstības pakāpes. CDMA2000 1X spēj nodrošināt datu pārraides ātrumu līdz 153,6 Kb/s. Taču uzlabotais CDMA2000 1xEV (EV – Evolution ) standarts paredz jau plašākas iespējas. CDMA2000 1X EV-DO (DO – Data Only) izmanto dažādas frekvences datu un balss pārraidei, ļauj paaugstināt datu pārraides ātrumu līdz pat 2,45 Mb/s, kā arī nodrošina tādus pakalpojumus kā MP3 failu pārraide un videokonferences.
Nākamajā attīstības pakāpē standarts CDMA2000 1X EV-DV (DV – Data and Voice) nodrošina balss un datu integrāciju vienā frekvenču diapazonā un piedāvā multimediju datu pārraides pakalpojumus ar ātrumu līdz pat 3,09 Mb/s.
Pašlaik pasaulē izveidotie trešās paaudzes CDMA2000 tīkli darbojas vairākās frekvencēs – pārsvarā 800 MHz, 850 MHz un 450 MHz. Eiropas kontinentā daļa no tiem veidota uz jau novecojušās NMT tīklu bāzes, kas darbojas 450 MHz frekvencē, tādēļ arī trešās paaudzes tīkliem tiek izmantota tieši šī frekvence.
| CDMA2000 wireless data transfer The CDMA2000 standard has several evolutionary steps. CDMA2000 1X can provide data transfer rates up to 153.6 Kb/s while the upgraded standard CDMA2000 1xEV (EV – Evolution) offers a wider range of options. CDMA2000 1X EV-DO (DO – Data Only) uses separate frequencies for data and voice transmission and allows to increase data rates up to 2.45 Mb/s, as well as provides services such as MP3 file transfer and video conferencing.
The next evolutionary step is to CDMA2000 1X EV-DV (DV – Data and Voice) which integrates voice and data on the same frequency band and offers multimedia data transfer services at speeds up to 3.09 Mb/s.
The third generation CDMA2000 networks currently deployed in the world operate in several frequency bands – mainly in 800 MHz, 850 MHz and 450 MHz. In continental Europe some of them are based on the outdated NMT network which uses 450 MHz band which is the reason why this particular band is used for third generation networks.
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