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    2.4GWiFi Paerewa Kawa

    Wā tuku: Apr-04-2023

    Kei te mahi a 2.4GWiFi i roto i te roopu auau 2.4GHz, me te awhe auau o 2400-2483.5MHz. Ko te paerewa matua e whai ake nei ko te paerewa IEEE802.11b/g/n i hangaia e te Institute of Electrical and Electronics Engineers (IEEE). Kei raro iho nei, ka whakaratohia e matou he korero whakataki mo enei paerewa:

    • Ko te IEEE802.11 he paerewa whatunga rohe ahokore i hangaia i te tuatahi e IEEE, i whakamahia te nuinga ki te whakaoti i te uru ahokore mo nga kaiwhakamahi me nga waahi kaiwhakamahi i roto i nga whatunga tari me te puni. He iti noa te pakihi ki te uru ki nga raraunga, a ko te tere teitei ka tae ki te 2Mb/s anake. Na te kore e taea e te IEEE 802.11 te whakatutuki i nga hiahia o te tangata mo te tere me te tawhiti tuku, kua tawhito tenei hangarau.

    • Ko te paerewa IEEE802.11b, e mohiotia ana ko te hangarau pono ahokore, e whakamahi ana i te 2.4GHz kore utu a-ao e mohiotia ana mo te awhiowhiotanga horahanga raupapa tika, me te bandwidth o 83.5MHz me te reeti tuku raraunga teitei o te 11Mbps. Ko te awhe tuku karekau he toronga raina ka eke ki te 300 mita ki waho me te 100 mita ki roto karekau he arai, na reira ko te kawa tuku ahokore e whakamahia nuitia ana i enei ra.

    • Ko te IEEE802.11g he paerewa ranu e urutau ana ki te paerewa 802.11b tuku iho me te whakarato i te tere whakawhiti raraunga o te 11Mbps ia rua i te auau 2.4GHz. Ka tango i nga hangarau whakarei penei i te paihere hongere rua, e whakanui ana i te bandwidth whakawhiti hongere ahokore ki te 108Mbps ka taea te tuku TCP/IP tuuturu o te 80 ki te 90Mbps.

    • Ka whakamahi a IEEE802.11n i nga hangarau MIMO (Multiple In Multiple Out) me te OFDM (Orthogonal Frequency Division Multiplexing), ka taea te whakanui ake i te tere tuku o WLAN mai i te 54Mbps e whakaratohia ana e 802.11a me 802.11g o naianei ki te 108Mbps, tae atu ki te 600Mbps, me te 600Mbps, ka taea te tautoko i te reo me te tuku ataata kounga teitei.

    Te whakataurite o nga paerewa 802.11b/g/n

     

    whakatupuranga tuarua

    whakatupuranga tuatoru

    Whakatupuranga tuawha

    paerewa

    IEEE802.11b

    IEEE802.11g

    IEEE 802.11n

    tikanga whakarereke

    CCK

    BPSK,QPSK,160AM,

    64QAM,

    DBPSK,DQPSK,

    BPSK,QPSK,160AM, 64QAM

    Momo whakawaehere

    DSSS

    OFDM,DSSS

    MIMO-OFDM

    tere

    11Mbps

    54Mbps

    600Mbps

    hōkaiipurangi hongere

    22MHz

    20MHz

    20,40MHz

     

    Te ra whakaaetanga

     

    1999

    2003

    2009

    āhuatanga

    Utu iti,

    auraki

    paerewa,

    hangarau pakeke

    me nga hua

     He iti te manakai,tuku roa

    tawhiti,

    te urunga kaha,

    kapi iti,

    me te tere tere

     

     I te wa e mahi ana i

    2.4G, ka taea

    hototahi

    whakararo

    me te 11b/g

     

    Ko Shenzhen Haidiwei Optoelectronics he kaihanga ngaio oONUtaputapu ngeru whatu me te whakawhitiwhiti whakaaro mohioONUkōwae ngeru whatu. I tenei wa ka hokona e ta maatau kamupene nga momo taputapu whakawhitiwhiti korero me nga hononga ki runga me raro, penei i nga whakawhiti muka whatu, nga whakawhiti Ethernet,OLTtaputapu ngeru whatu,ONUtaputapu ngeru whatu, me te aha. Mena kei te pirangi koe ki te ako atu mo te matauranga hangarau korero, tena koa waea mai ki ta matou kamupene.



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