Ulwazi

Kwi-IEEE802.11 protocol kwi-WiFi, inani elikhulu lemibuzo yedatha yenziwa, kwaye uphuhliso lwembali lushwankathelwa ngolu hlobo lulandelayo.Esi sishwankathelo silandelayo asiyongxelo ebanzi kunye neneenkcukacha, kodwa yinkcazo yeeprothokholi ezisetyenziswa ngoku kwimarike.IEEE 802.11, isekwe kwi...

Ukusukela kwiMfazwe yeSibini yeHlabathi, unxibelelwano olungenazingcingo lunikwe ingqwalasela engakumbi ngenxa yesicelo somkhosi, esiphucule kakhulu imida yokuhanjiswa kolwazi kwimo engqongileyo.Ukusukela ngoko, unxibelelwano olungenazingcingo luyaphuhla, kodwa alunaluhlu olubanzi lwe ...

I-fiber optical yitshaneli eneentambo zokuhambisa imiqondiso ye-optical.Sibiza izibonakaliso zombane ezingafunekiyo kwitshaneli "ingxolo Ingxolo kwinkqubo yonxibelelwano igxininiswe kwisignali.Xa kungekho mqondiso wothumelo, kukho ingxolo kwinkqubo yonxibelelwano.&#...

Ijelo sisixhobo sonxibelelwano esidibanisa isiphelo sothumelo kunye nesiphelo sokufumana, kwaye umsebenzi walo kukuhambisa imiqondiso ukusuka kwisiphelo sothumelo ukuya kwisiphelo sokufumana.Ngokwamajelo osasazo ahlukeneyo, amajelo anokwahlulwa abe ngamacandelo amabini: itshaneli ezingenazingcingo kunye neengcingo ...

Kweli nqaku ndiza kuthetha ngeNkqubo yoNxibelelwano iModeli kwiinkcukacha zibandakanya iinxalenye zabo ze-5, (1) ikhowudi yomthombo kunye ne-decoding, (2) i-Encoding kunye ne-decoding of channels, (3) i-Encryption kunye ne-decryption, (4) i-modulation ye-Digital kunye ukuthotywa, (5) Ungqamaniso.Masingene nzulu ̷...

1. Ukuhlelwa kweshishini loNxibelelwano Ngokweentlobo ezahlukeneyo zeenkonzo zonxibelelwano, iinkqubo zonxibelelwano zinokwahlulwa zibe ziinkqubo zonxibelelwano ngetelegraph, iinkqubo zonxibelelwano ngomnxeba, iinkqubo zonxibelelwano lwedatha, kunye neenkqubo zonxibelelwano lwemifanekiso.Ngenxa yonxibelelwano lomnxeba ...