Ilimi

A cikin tsarin sadarwar dijital, mai karɓa yana karɓar jimlar siginar da aka watsa da hayaniyar tashoshi. Mafi kyawun liyafar siginar dijital bisa ma'aunin "mafi kyau" tare da mafi ƙarancin yuwuwar kuskure. Kurakurai da aka yi la'akari da su a cikin wannan babin sun samo asali ne saboda iyakacin band...

Hoto 6-6 shine toshe zane na tsarin watsa siginar baseband na dijital. Yawanci ya ƙunshi matatar watsawa (janar siginar tasha), tashoshi, matattarar karɓa, da mai yanke shawara. Domin tabbatar da aiki amintacce da tsari...

Siginar tushe na dijital nau'in igiyar wutar lantarki ce wacce ke wakiltar bayanan dijital, wanda za'a iya wakilta ta da matakai daban-daban ko bugun jini. Akwai nau'ikan sigina na baseband na dijital da yawa (wanda ake kira siginar tushe). Hoto na 6-1 yana nuna ƴan asalin siginar siginar igiyar ruwa, ...

Ana iya raba siginonin amincewa zuwa siginonin makamashi da siginonin wuta gwargwadon ƙarfinsu. Ana iya raba siginonin wuta zuwa sigina na lokaci-lokaci da sigina na lokaci-lokaci gwargwadon ko na lokaci-lokaci ko a'a. Siginar makamashi yana da iyaka a cikin girma da tsawon lokaci, ƙarfinsa fi ...

Lokacin da ƙarfin watsa tashar ta jiki ya fi girma fiye da buƙatar sigina ɗaya, ana iya raba tashar ta sigina da yawa. Misali, layin gangar jikin tsarin tarho yawanci yana da dubban sigina da ake watsawa akan fiber na gani guda ɗaya. Multiplexing shine fasahar da ke warware ...

1) Lambar AMI Cikakken sunan lambar AMI (Alternative Mark Inversion) shine madaidaicin lambar juyar da alamar. blank) zama baya canzawa. Misali: Lambar saƙo: 0 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1… AMI code: 0 -1 +1 0 0 0 0 0 0 0 0 -1 +1 0 0 -1 +1… daidai da lambar AMI shine ...