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    WLAN anụ ahụ oyi akwa PHY

    Oge nzipu: Ọktoba 25-2022

    PHY, oyi akwa anụ ahụ nke IEEE 802.11, nwere akụkọ ntolite teknụzụ na ụkpụrụ teknụzụ ndị a:

     

    IEEE 802 (1997)
    Teknụzụ mgbanwe mgbanwe: nnyefe infrared nke FHSS na DSSS
    Arụ ọrụ ugboro band: arụ ọrụ na 2.4GHz ugboro band (2.42.4835GHz, 83.5MHZ na ngụkọta, kewara 13 ọwa (5MHZ n'etiti n'akụkụ ọwa), onye ọ bụla ọwa aza ajụjụ 22MHz. Mgbe ọwa na-eji n'out oge, e nwere atọ na-abụghị- ọwa na-ejikọta ọnụ [1 6 11 ma ọ bụ 2 7 12 ma ọ bụ 3 8 13])
    Ọnụọgụ nnyefe: N'oge a, ọnụego nnyefe na-adị nwayọọ na data dị ntakịrị. Enwere ike iji ya naanị maka ọrụ ịnweta data, yana ọnụego nnyefe kacha bụ 2 Mbps.
    Ndakọrịta: adịghị dakọtara.
    IEEE 802.11a (1999)
    Teknụzụ mgbanwe mgbanwe: teknụzụ ewebatara (OFDM), ya bụ nkewa ugboro ugboro ugboro ugboro (OFDM).
    Arụ ọrụ ugboro band: n'oge a, ọ na-arụ ọrụ na 5.8GHz band band (5.725G5.85GHz, 125MHz na mkpokọta, kewara n'ime ise ọwa, onye ọ bụla ọwa akaụntụ maka 20MHz, na n'akụkụ ọwa adịghị overlapta ibe ha, ya bụ, mgbe. A na-eji ọwa ndị ahụ eme ihe n'otu oge, ọwa ise ndị a anaghị ekpuchi ibe ha).
    Ọnụego nnyefe: mgbe ọnụego nnyefe na-abawanye, ọ bụ 54, 48, 36, 24, 18, 12, 9, na 6. Nkeji dị na nso a bụ Mbps.
    Ndakọrịta: adịghị dakọtara.
    IEEE 802.11b (1999)

     

    Teknụzụ mgbanwe: gbasaa ọnọdụ IEEE 802.11 DSSS wee nara usoro mgbanwe CCK
    Ugboro ugboro na-arụ ọrụ: 2.4GHz
    Ọnụego nnyefe: na-akwado ọnụego dị iche iche nke 11 Mbps, 4.5 Mbps, 2 Mbps, na 1 Mbps
    ndakọrịta: Malite ndakọrịta ala na IEEE 802.11
    IEEE 802.11g (2003)
    Teknụzụ mgbanwe mgbanwe: na-ewebata teknụzụ ugboro ugboro orthogonal multiplexing (OFDM).
    Ugboro ugboro na-arụ ọrụ: 2.4GHz
    Ọnụego nnyefe: ghọta oke nnyefe data nke 54 Mbps
    Ndakọrịta: dakọtara na IEEE 802.11/IEEE 802.11b
    IEEE 802.11n (2009)
    Teknụzụ mgbanwe mgbanwe: na-ewebata teknụzụ orthogonal nkewa multiplexing (OFDM) teknụzụ + ọtụtụ ntinye / ọtụtụ mmepụta (MIMO) teknụzụ.
    Ugboro ugboro na-arụ ọrụ: 2.4G ma ọ bụ 5.8GHz
    Nzipu ọnụego: data nnyefe ọsọ nwere ike ruo 300 ~ 600Mbps
    Ndakọrịta: dakọtara na IEEE 802.11/IEEE 802.11b/IEEE 802.11a
    Ihe dị n'elu bụ usoro akụkọ ihe mere eme nke IEEE802 protocol, nke na-esighị ike ịchọta. Usoro a gụnyere ma 2.4G na 5G band band. Ọzọkwa, site na mmepe nke akụkọ ihe mere eme na nhazigharị nke usoro ahụ mgbe niile, ọnụego na-etolite elu. Ugbu a, usoro kachasị ọsọ nke band 2.4G nwere ike iru 300Mbps, na ndekọ ọsọ ọsọ nke band 5G nwere ike iru 866Mbps.
    Nchịkọta: Usoro ndị 2.4GWiFi kwadoro bụ: 11, 11b, 11g, na 11n.
    Usoro 5GWiFi kwadoro bụ 11a, 11n, na 11ac.
    Nke a dị n'elu bụ nkọwa ihe ọmụma nke WLAN Physical Layer PHY nke Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. bụ onye na-emepụta ọkachamara na ngwa nkwurịta okwu anya anya.ngwaahịa 



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