Kafin Fahimtar fasahar PHL4, menene fasahar zamani? Fasahar Modulation ita ce dabarar canza siginar bible (shawo kan siginar lantarki) cikin siginar watsa hankali. Don tabbatar da ingancin sadarwa da shawo kan matsaloli a cikin watsa siginar siginar nesa, wajibi ne don canja wurin siginar siginar zuwa babban tashar tashoshin ta hanyar watsa.
Pam4 Umarni na hudu na bugun jini ne na zamani (Pam) dabarar zamani.
Signal Pam sanannen siginar watsa siginar ta sigina ne bayan NRZ (ba zai dawo zuwa sifili ba).
Alamar NRZ tana amfani da matakan siginin biyu, m da ƙasa, don wakiltar 1 da sigina na dabaru na dijital, kuma zai iya watsa 1 na bayanan da ke cikin dijital.
Alamar alama ta Pam 28 daban-daban na musayar siginar siginar, kuma kowane maimaitawar agogo na iya tura bayanan 2 na bayanan dabaru, wato 00, 01, 10, da 11.
Saboda haka, a karkashin yanayin baud ɗin guda ɗaya, da bitarancin siginar Pam4 ya ninka sau biyu na Nrz istalcarancin isa da rage farashin watsa da ya rage farashin.
An yi amfani da fasahar fasahar Pob4 a fagen rikodin shiga tsakani. A halin yanzu, akwai 400g Entucever Module ne a kan fasahar zamani na Pam4 don cibiyar sadarwa ta Pamƙiku na Pamƙu na Pamƙuma don Cibiyar Matsa ta Pamƙuma.
Tsarin aiwatar da aikace-aikacen 400g DML na Enlule ya dogara da siginar lantarki 25g, waɗanda aka ɗora su a kan guntun direban. Alamar bindiga ta Tsakiya ta canza zuwa tashoshin tashoshi 8g-50g-sau biyu na sauƙin tashoshi ta hanyar 800, hade da jerin sunayen digo na 400g mai saurin shiga sifar sigina 400g mai tsayi. Lokacin karɓar sigina naúrar, da aka karɓa 1-Channel 400g Babban siginar gani ta hanyar sigina 8GBPs, wanda ya karɓi zuwa siginar lantarki. Bayan dawo da agogo, amplification, daidaitawa, da kuma satar Pam 14 ta hanyar sarrafa wutar lantarki, siginar lantarki ta canza zuwa rassan 25g na 25g na 25G NRZ.
Aiwatar da fasaha na zamani zuwa 400gb / sptical modes. A 400GB / S Entulate Module dangane da Pamili Styulation na iya rage yawan lasashen da ake buƙata kuma a daidai lokacin da ake karɓa da ke karbar tsari idan aka kwatanta da NRZ. Pamili Modulation yana rage yawan abubuwan haɗin gani a cikin tsarin gani, wanda zai iya kawo fa'idodi kamar farashi mai tsada, da ƙananan yawan masu kunnawa.
Akwai buƙatar samfuran 50gbical / s a cikin cibiyoyin watsa labarai na 5G, da bayani wanda ya danganta da tsarin zamani na Pam4 na ƙwayoyin cuta.
A lokacin da yake kwatanta sigina na PAM-4, yana da mahimmanci a kula da banbanci tsakanin adadin baud da bit. Don siginar Nrz na gargajiya, tunda alama ɗaya tana watsa abubuwa ɗaya na bayanai, ƙarancin bit da baud iri ɗaya ne. Misali, a cikin 100g Ethernet, ta amfani da alamomin watsawa 25.781200Gbps, da sigina bit a kan kowane siginar shima ya kai 25.78125GBps, da alamu hudu suna samun musayar sigina 100gbps; Ga sigina na PAM-4, tunda alama ɗaya tana watsa kashi 2 na bayanai, adadin bit da za a iya watsa shi sau biyu da baud sau biyu. Misali, ta amfani da alamun 4 na 2656200Gbaud, da bitarancin bit, da tashoshi 4 na iya cimma nasarar siginar siginar 200Gbps. Don 400 na Ethernet, ana iya samunsa da tashoshi 8 na siginar 856200GBAud.
Lokaci: Jan-02-025