Nkhani

Kodi LAN ndi chiyani? LAN amatanthauza Local Area Network. LAN imayimira malo owulutsa, zomwe zikutanthauza kuti mamembala onse a LAN alandila mapaketi owulutsa omwe amatumizidwa ndi membala aliyense. Mamembala a LAN amatha kulankhulana wina ndi mnzake ndipo amatha kukhazikitsa njira zawozawo zamakompyuta kuchokera kwa ogwiritsa ntchito osiyanasiyana kuti alankhule ndi aliyense ...

Dongosolo la ulalo wa data la WLAN limagwiritsidwa ntchito ngati gawo lofunikira pakutumiza kwa data. Kuti mumvetse WLAN, muyeneranso kuidziwa mwatsatanetsatane. Kudzera m'mafotokozedwe otsatirawa: Mu protocol ya IEEE 802.11, sublayer yake ya MAC ili ndi njira zopezera media za DCF ndi PCF: Tanthauzo la DCF: Gawani...

PHY, wosanjikiza wakuthupi wa IEEE 802.11, ili ndi mbiri yotsatira ya chitukuko chaukadaulo ndi miyezo yaukadaulo: IEEE 802 (1997) Tekinoloje yosinthira: kutumiza kwa infrared kwa FHSS ndi DSSS Operating frequency band: ikugwira ntchito mu 2.4GHz frequency band (2.42.4835GHz, 83.5MHZ yonse ...

Pali mayina ambiri omwe akuphatikizidwa mu WLAN. Ngati mukufuna kumvetsetsa mozama mfundo za chidziwitso cha WLAN, muyenera kufotokozera mwaukadaulo pamfundo iliyonse kuti mumvetsetse bwino izi m'tsogolomu. Station (STA, mwachidule). 1). Malo (malo), al...

WLAN ingathe kufotokozedwa m'njira yotakata komanso yopapatiza: Kuchokera ku kawonedwe kakang'ono, timatanthauzira ndi kusanthula WLAN m'njira zotakata komanso zopapatiza. Mwanjira yotakata, WLAN ndi netiweki yopangidwa posintha zina kapena zonse zamawayilesi otumizira mawayilesi a LAN ndi mafunde a wailesi, monga infrared, l...

Constellation ndi lingaliro lofunikira pakusinthika kwa digito. Tikatumiza zizindikiro za digito, nthawi zambiri sitimatumiza 0 kapena 1 mwachindunji, koma choyamba timapanga gulu la zizindikiro za 0 ndi 1 (bits) molingana ndi chimodzi kapena zingapo. Mwachitsanzo, magawo awiri aliwonse amapanga gulu, ndiye, 00, 01, 10, ndi 11. Pali zigawo zinayi ...