Ulwazi

Xa sihambisa umqondiso, nokuba ngumqondiso we-optical, umbane wombane, okanye i-wireless signal, ukuba idluliselwe ngokuthe ngqo, isibonakaliso siphazamiseka ngokulula, kwaye kunzima ukufumana ulwazi oluchanekileyo ekupheleni kokufumana. Ukuze kuphuculwe i-anti-interference abilit...

Iindlela ezisisiseko ze-binary digital modulation zezi: I-Binary amplitude keying (2ASK) -utshintsho lwe-amplitude yesiginali yomphathi; I-binary frequency shift keying (2FSK) -ukutshintsha rhoqo kwesignali yenkampani; I-binary phase shift keying (2PSK) -utshintsho lwesigaba somqondiso womthwali. Isitshixo sokutshintsha kwesigaba esahlukileyo...

Inkqubo ye-PON ithatha iteknoloji ye-multiplexing ye-time-division in the direction of uplink, kwaye i-ONU ithumela idathagrams kwi-uplink direction direction ngokwesitampu sexesha esabiwe yi-OLT. Xa i-ONU ikhupha ukukhanya ngaphandle kokwabela isitampu sexesha, iya kungqubana neempawu zokukhupha zezinye kwi...

Ngophuhliso lweenkqubo zonxibelelwano lwamehlo ezinomgama omde, umthamo omkhulu, kunye nesantya esiphezulu, ngakumbi xa isantya samaza esinye sivela kwi-40g ukuya kwi-100g okanye nakwi-super 100g, i-chromatic dispersion, i-nonlinear effects, i-polarization mode dispersion, kunye nezinye iziphumo zokuhambisa. ..

Ikhowudi yokubona imposiso (ikhowudi yokujonga i-parity): ikhowudi yokukhangela i-parity iqulethe i-n-1 bit unit yolwazi kunye ne-1 bit check element. Iyunithi yolwazi ye-N-1 yidatha esebenzayo kwiinkcukacha esizithumelayo, kwaye iyunithi yokujonga i-1-bit isetyenziselwa ukukhangela impazamo kunye nekhowudi yokuphinda iphinde iphinde iphinde iphinde isetyenziswe. Ukujonga okungaqhelekanga: ukuba i-n...

Molweni, Bafundi. Kweli nqaku ndiza kuxoxa nge-OSI-Data yoLawulo lwemposiso yoMaleko weNgcaciso ngengcaciso. Masiqale… Ukuqonda usasazo lwedatha yomaleko makhe sithathe umzekelo, ukuba isixhobo esingu-A sifuna ukunxibelelana nesixhobo esingu-B, ikhonkco lonxibelelwano ...