- Ngu Admin / 27 Sep 22 /0Amazwana
Ukuhlukaniswa Kwenethiwekhi ye-PAN, LAN, MAN kanye ne-WAN
Inethiwekhi ingahlukaniswa nge-LAN, LAN, MAN, kanye ne-WAN. Izincazelo ezithile zala mabizo ziyachazwa futhi ziqhathaniswe ngezansi. (1) Inethiwekhi yendawo yomuntu siqu (i-PAN) Amanethiwekhi anjalo anganika amandla ukuxhumana kwenethiwekhi yebanga elifushane phakathi kwezinto ezisetshenziswayo eziphathwayo namadivayisi okuxhumana, Lokhu kuhlanganisa...Funda kabanzi
- Ngu Admin / 26 Sep 22 /0Amazwana
Siyini Inkomba Yamandla Esiginali Etholiwe (RSSI) ngokuningiliziwe
I-RSSI isifinyezo se-Received Signal Strength Indication. Isici samandla esignali esamukelwe sibalwa ngokuqhathanisa amanani amabili; okungukuthi, ingasetshenziswa ukunquma ukuthi amandla esiginali aqine noma abuthakathaka kangakanani uma eqhathaniswa nenye isignali. Ifomula yokubala ye-RSSI...Funda kabanzi
- Ngomlawuli / 25 Sep 22 /0Amazwana
Izimiso Zobuchwepheshe Eziyisisekelo ze-MIMO
Kusukela ngo-802.11n, ubuchwepheshe be-MIMO buye basetshenziswa kule mithetho yomthetho futhi buye bathuthukisa kakhulu izinga lokudlulisela okungenantambo. Ngokuqondile, indlela yokufeza ukuthuthukiswa kobuchwepheshe obuphezulu. Manje ake sibhekisise ubuchwepheshe be-MIMO. Ngokuqhubeka kobuchwepheshe bokuxhumana obungenawaya, mor...Funda kabanzi
- Ngu Admin / 23 Sep 22 /0Amazwana
Ukuhlukaniswa Kwezishintshi
Kunezinhlobo eziningi zokushintshwa emakethe, kodwa futhi kukhona umehluko ohlukile wokusebenza, futhi izici eziyinhloko zihlukile. Ingahlukaniswa ngokomqondo obanzi nesikali sohlelo lokusebenza: 1) Okokuqala, ngomqondo obanzi, ukushintshwa kwenethiwekhi kungahlukaniswa ngezigaba ezimbili...Funda kabanzi
- Ngu Admin / 22 Sep 22 /0Amazwana
I-Direct Sequence Spread Spectrum (DSSS) Ukuxhumana – Isimiso Sokuxhumana
Isimiso: Isimiso se-Direct Sequence Spread Spectrum system silula kakhulu. Isibonelo, uchungechunge lolwazi oluzothunyelwa lunwetshwa lube yibhendi yefrikhwensi ebanzi kakhulu ngekhodi ye-PN. Ekupheleni kokwamukela, ulwazi oluthunyelwe lubuyiswa ngokuhlobanisa isiginali ye-spectrum yokusabalalisa ne ...Funda kabanzi
- Ngu Admin / 21 Sep 22 /0Amazwana
Isingeniso se-Error Vector Magnitude (EVM)
I-EVM: isifinyezo se-Error Vector Magnitude, okusho ubukhulu be-vector yephutha. Ukudluliswa kwebhendi yesignali yedijithali ukulungisa isiginali ye-baseband ekugcineni kokuthumela, ukuyithumela emugqeni ukuze idluliselwe, bese uyehlisa ekugcineni kokwamukela ukuze kubuyiselwe i-baseband yangempela...Funda kabanzi
