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    • Ka Admin / 05 Nov 24 /0Maikutlo

      Kamohelo e nepahetseng ea matshwao a dijithale

      Lenaneong la puisano la dijithale, seo moamoheli a se fumanang ke kakaretso ea lets'oao le fetisoang le lerata la kanale. Kamohelo e nepahetseng ea matshwao a dijithale e theilwe hodima kgonahalo e fokolang ya phoso e le mokgwa o "molemo ka ho fetisisa". Liphoso tse shebiloeng khaolong ena ke mai...
      Kamohelo e nepahetseng ea matshwao a dijithale
      Bala haholoanyane
    • Ka Admin / 04 Nov 24 /0Maikutlo

      Sebopeho sa sistimi ea phetisetso ea lets'oao la baseband ea dijithale

      Setšoantšo sa 6-6 ke setšoantšo sa li-block tsa mokhoa o tloaelehileng oa phetisetso ea signal baseband. Haholo-holo e entsoe ka sefahla se romellang (jenereithara ea lets'oao la seteishene), mocha, ho amohela filthara le qeto ea sampole. E le ho etsa bonnete ba mosebetsi o tšepahalang le o hlophisehileng oa sistimi, ...
      Sebopeho sa sistimi ea phetisetso ea lets'oao la baseband ea dijithale
      Bala haholoanyane
    • Ka Admin / 20 Sep 24 /0Maikutlo

      Karohano ea makhetlo a mangata

      Ha matla a phetisetso ea mocha oa 'mele o phahame ho feta tlhoko ea pontšo e le' ngoe, mocha o ka arolelanoa ka lipontšo tse ngata, mohlala, mohala oa trunk oa tsamaiso ea thelefono hangata o na le matšoao a likete a fetisitsoeng ka fiber e le 'ngoe. Multiplexing ke theknoloji ea ho rarolla mathata a ...
      Karohano ea makhetlo a mangata
      Bala haholoanyane
    • Ka Admin / 19 Sep 24 /0Maikutlo

      Mofuta o tloaelehileng oa khoutu ea phetiso ea baseband

      (1) Khoutu ea AMI AMI(Alternative Mark Inversion) khoutu ke lebitso le felletseng la khoutu e fetoletsoeng ea letšoao, molao oa eona oa khouto ke ho fetola khoutu ea molaetsa “1″ (tšoao) ho “+1″ le “-1″, athe "0" (letšoao le se nang letho) le lula le sa fetohe. Ka mohlala...
      Mofuta o tloaelehileng oa khoutu ea phetiso ea baseband
      Bala haholoanyane
    • Ka Admin / 12 Sep 24 /0Maikutlo

      Nonlinear modulation (Angle modulation)

      Ha re fetisa letšoao, ebang ke lets'oao la optical kapa lets'oao la motlakase kapa lets'oao le se nang mohala, haeba le fetisoa ka kotloloho, lets'oao le ka ba le tšitiso ea lerata, 'me ho thata ho fumana tlhahisoleseling e nepahetseng qetellong ea ho amohela. E le hore t...
      Nonlinear modulation (Angle modulation)
      Bala haholoanyane
    • Ka Admin / 11 Sep 24 /0Maikutlo

      Binary Digital modulation

      Litsela tsa motheo tsa binary digital modulation ke: binary amplitude keying (2ASK) - phetoho ea amplitude ea letšoao la mochine; Binary frequency shift keying (2FSK) - phetoho ea khafetsa ea lets'oao la sephethephethe; Binary phase shift keying (2PSK)- Phetoho ea mokhahlelo oa mopalami ke...
      Binary Digital modulation
      Bala haholoanyane
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