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    He Paerewa Kawa 2.4G WiFi

    Wā tuku: Mei-06-2022

    Ko te 2.4G WiFi e mahi ana i roto i te roopu 2.4GHz me te awhe auau whakahaere o 2400 ~ 2483.5MHz. Ko te paerewa matua e whai ake nei ko te paerewa IEEE802.11b / g / n i whakaritea e IEEE (Association of Electrical and Electronics Engineers). Anei enei paearu. taipitopito:

    • Ko te IEEE802.11 he paerewa LAN ahokore i hangaia e IEEE. Ka whakamahia te nuinga ki te whakaoti i te uru ahokore ki nga kaiwhakamahi me nga tauranga kaiwhakamahi i roto i te tari LAN me nga whatunga puni. He iti noa te ratonga ki te uru raraunga, me te reiti teitei o te 2Mb / s. Kua tawhito tenei hangarau na te mea he takarepa te IEEE802.11 i roto i te tere me te tawhiti tuku.
    • Ko te paerewa IEEE802.11b, e mohiotia ana ko te hangarau pono ahokore, e whakamahi ana i te 2.4GHz kua whakaritea e te ao mo te toronga raupapa tika, me te 83.5MHz te whanui me te nui o te tere whakawhiti raraunga o te 11Mbps. Ko te awhe morahi tuku he 300 mita ki waho me te 100 mita i roto i te whare kaore he urunga o roto, koinei te kawa tuku ahokore e whakamahia nuitia ana inaianei.
    • Ko te IEEE802.11g he paerewa ranu e urutau ana ki te paerewa 802.11b tuku iho me te whakarato i nga reiti whakawhiti raraunga o te 11Mbps ia rua i te 2.4GHz.Ka whakamahia e ia nga hangarau whakarei penei i te paihere rua-hongere, e whakapai ake ana i te bandwidth whakawhiti hongere ahokore ki te 108Mbps ka taea whakarato i te TCP / IP tuuturu i waenga i te 80 me te 90Mbps.
    • Ka whakamahia e IEEE802.11n te hangarau MIMO (maha-i roto me te maha-waho) me te OFDM (orthogonal frequency division multiplexing), ka taea te whakapai ake i te tere o te tuku WLAN mai i te 54Mbps o naianei e whakaratohia ana e 802.11a me 802.11g ki 108Mbps, tae noa ki te 600Mbps. , a ka taea te tautoko i te reo me te tuku ataata kounga teitei.

    He Whakatauritenga o nga paearu 802.11b/g/n

     

    whakatupuranga tuarua

    whakatupuranga tuatoru

    Ko te reanga tuawha

    paerewa

    IEEE802.11b

    IEEE802.11g

    IEEE 802.11n

    tikanga whakarereke

    CCK

    BPSK,QP SK,160AM, 64QAM,DBPSK,DQPSK,

    BPSK,QPSK,160AM, 64QAM

    Momo whakawaehere

    DSSS

    OFDM,DSSS

    MIMO-OFDM

    tere

    11Mbps

    54Mbps

    600Mbps

    hongere hōkaiipurangi

    22MHz

    20MHz

    20,40MHz

    Te ra o te whakaaetanga

    1999

    2003

    2009

    āhuatanga

    Utu iti, auraki

    paerewa, hangarau

    me nga hua he

    pakeke

    Te mana whanaunga iti

    kohi, roa

    tawhiti tuku, kaha

    kaha uru, iti

    kapinga, reiti teitei

    Raro-hototahi ki

    11b / g i te wa e mahi ana i

    2.4G

    He tohunga ngaio a Shenzhen HDV Photoelectron Technology LtdONUKo te kaihanga taputapu ONT he korero mohio hokiONUkaihanga kōwae, kei te hokona e to taatau kamupene nga momo taputapu korero o runga me raro, penei i te Fiber Media Converter, Ethernetwhakawhiti, OLTtaputapu,ONUtaputapu me etahi atu. Mena kei te hiahia koe ki te mohio atu mo te hangarau korero, nau mai ki te whakapiri mai ki a maatau i nga wa katoa.



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