Ulwazi

Njengoba kuboniswe kulesi sithombe esingenhla, singakuqonda ukubukeka kwe-RJ45 ngokusho kwesithombe, kodwa akuzona zonke izixhumanisi ze-RJ45 ezifana nalezi ezingenhla ziyi-interface ye-RJ11, okungeke kuxoxwe ngayo okwesikhashana.Amaswishi ahlelwe eceleni ngamachweba amaningi e-RJ45, angaba...

Ngokuvamile, ukuhambisana kwamamojula optical kubhekisela ekutheni amamojula angasebenza ngokujwayelekile yini ezintweni zokuxhumana zezinhlobo ezahlukene kanye nabakhiqizi.Okuqukethwe kobuchwepheshe bamamojula optical kuphansi, futhi isingeniso sabo silula.Ngenxa yalokho, abaningi ...

noma imodeli yereferensi ye-OSI, iswishi isebenza kungqimba lwesibili lwale modeli, isendlalelo sesixhumanisi sedatha.Njengoba kuboniswe emfanekisweni olandelayo, ukushintshwa kunamachweba ayisishiyagalombili.Uma idivayisi ixhunywe kuswishi nge-RJ45, i-chip eyinhloko yeswishi izokhomba izimbobo ezixhunywe kunethiwekhi...

Imojula ye-PON iwuhlobo lwemojuli yokubona.Isebenza kumishini yetheminali ye-OLT futhi ixhuma nemishini yasehhovisi ye-ONU.Kuyingxenye ebalulekile yenethiwekhi ye-PON.Amamojula we-PON optical angahlukaniswa abe amamojula we-APON (ATM PON), i-BPON (inethiwekhi ye-broadband passive) amamojula optical, i-EPON (Ethernet...

I-FHSS, ubuchwepheshe be-frequency hopping spread spectrum, ngaphansi kwesimo sokuvumelanisa kanye nesikhathi esisodwa, yamukela amasignali adluliswa abathwali bebhendi emincane yohlobo oluthile (leli fomu elithile linemvamisa ethile, njll.) kuzo zombili iziphetho.Kumamukeli ongenalo uhlobo oluthile, i-hop...

I-OFDM iphakanyiswe ku-IEEE802.11a.Ngokusekelwe kule ndlela yokushintshashintsha, sidinga ukwazi ukuthi iyini i-OFDM ukuze siqonde izimiso ezihlukene.Yini i-OFDM?I-OFDM iwubuchwepheshe obukhethekile bokushintshwa kwezinkampani eziningi.Lobu buchwepheshe buhlose ukuhlukanisa isiteshi sibe iziteshi ezincane ze-orthogonal, futhi ...