Izindaba

Lapho umthamo wokudlulisela wesiteshi esingokoqobo uphakeme kunesidingo sesiginali eyodwa, isiteshi singabelwa amasignali amaningi, isibonelo, umugqa we-trunk wesistimu yocingo uvame ukuba nezinkulungwane zamasignali adluliswa ngefayibha eyodwa. I-Multiplexing ubuchwepheshe bokuxazulula ukuthi ...

(1) Ikhodi ye-AMI AMI(Alternative Mark Inversion) ikhodi igama eligcwele lenye ikhodi yokuguqula uphawu, umthetho wayo wombhalo wekhodi uwukuguqula ngokushintshana ikhodi yomlayezo “1″ (maka) ibe “+1″ kanye “-1″, kuyilapho "0" (uphawu olungenalutho) luhlala lungashintshiwe. Isibonelo...

Lapho sidlulisela isignali, kungakhathaliseki ukuthi isignali yokubona noma isignali kagesi noma isignali engenantambo, uma idluliswa ngokuqondile, isignali isengozini yokuphazamiseka komsindo, futhi kunzima ukuthola ulwazi olulungile ekugcineni kokwamukela. Ukuze t...

Izindlela eziyisisekelo zokuguquguquka kwedijithali kanambambili yilezi: ukhiye we-amplitude kanambambili (2ASK)- ushintsho lwe-amplitude yesiginali yenkampani yenethiwekhi; I-Binary frequency shift keying (2FSK)- ukuguqulwa kwemvamisa yesiginali yenkampani yenethiwekhi; Ukhiye wokushintsha wesigaba kanambambili (2PSK)- Ushintsho lwesigaba senkampani yenethiwekhi si...

I-WiFi indinganiso yenethiwekhi yendawo engenantambo yamazwe ngamazwe (WLAN), igama eligcwele elithi Wireless Fidelity, eyaziwa nangokuthi i-IEEE802.11b standard. I-WiFi ekuqaleni yayisekelwe kuphrothokholi ye-IEEE802.11, eyanyatheliswa ngo-1997, yachaza ungqimba lwe-WLAN MAC namazinga ongqimba abonakalayo. Ukulandela ...

Ukulungisa iphutha lesithombe seso elibonakalayo Ithagethi: Isilinganiso sokuqothula Isigaba socwaningo nentuthuko: phakathi kuka-10-15 (esikhulu singcono kunesincane), ngokuya ngesimo sangempela singaba ngokufanele ukuthuthukisa isilinganiso sokuqothulwa, kodwa singabi phansi kakhulu. Kuhlobene nokuzwela. I-Quiver ...