I-PHY, isendlalelo esibonakalayo se-IEEE 802.11, inomlando olandelayo wokuthuthukiswa kobuchwepheshe kanye namazinga obuchwepheshe:
IEEE 802 (1997)
Ubuchwepheshe bokuguquguquka: ukudluliswa kwe-infrared ye-FHSS ne-DSSS
Ibhendi yefrikhwensi yokusebenza: esebenza kubhendi yefrikhwensi engu-2.4GHz (2.42.4835GHz, 83.5MHZ isiyonke, ihlukaniswe yaba iziteshi eziyi-13 (5MHZ phakathi kwamashaneli aseduze), isiteshi ngasinye sibalwa ngu-22MHz. amashaneli agqagqene [1 6 11 noma 2 7 12 noma 3 8 13])
Izinga lokudlulisela: Ngalesi sikhathi, izinga lokudlulisela lihamba kancane futhi idatha ilinganiselwe. Ingasetshenziselwa kuphela izinsiza zokufinyelela idatha, futhi izinga eliphezulu lokudlulisa ngu-2 Mbps.
Ukuhambisana: akuhambisani.
IEEE 802.11a (1999)
Ubuchwepheshe bokushintshashintshashintshashintshayo: ubuchwepheshe obethulwe ngokusemthethweni (OFDM), okuyi-orthogonal frequency division multiplexing (OFDM).
Ibhendi yamafrikhwensi esebenzayo: ngalesi sikhathi, isebenza kubhendi yefrikhwensi engu-5.8GHz (5.725G5.85GHz, 125MHz isiyonke, ihlukaniswe yaba iziteshi ezinhlanu, isiteshi ngasinye sibalelwa ku-20MHz, kanti iziteshi ezincikene azidlulelani, okungukuthi, lapho iziteshi zisetshenziswa ngesikhathi esisodwa, lezi ziteshi ezinhlanu azidlulelani).
Izinga lokudlulisela: uma izinga lokudlulisela likhuphuka, liyi-54, 48, 36, 24, 18, 12, 9, kanye no-6. Amayunithi akulolu banga yi-Mbps.
Ukuhambisana: akuhambisani.
IEEE 802.11b (1999)
Ubuchwepheshe bokuguquguqula: nweba imodi ye-IEEE 802.11 DSSS futhi usebenzise indlela yokushintshashintsha ye-CCK
Ibhendi yefrikhwensi yokusebenza: 2.4GHz
Izinga lokudlulisa: lisekela amanani ahlukene we-11 Mbps, 4.5 Mbps, 2 Mbps, kanye ne-1 Mbps
Ukuhambisana: Qala ukuhambisana okuya phansi ne-IEEE 802.11
IEEE 802.11g (2003)
Ubuchwepheshe bokuguquguquka: sethula ubuchwepheshe be-orthogonal frequency division multiplexing (OFDM).
Ibhendi yefrikhwensi yokusebenza: 2.4GHz
Izinga lokudlulisela: qaphela izinga eliphezulu lokudluliswa kwedatha elingu-54 Mbps
Ukuhambisana: Ihambisana ne-IEEE 802.11/IEEE 802.11b
IEEE 802.11n (2009)
Ubuchwepheshe bokuguquguqula: sethula ubuchwepheshe be-orthogonal frequency division multiplexing (OFDM) + ubuchwepheshe bokufaka okuningi/okuphumayo okuningi (MIMO)
Ibhendi yefrikhwensi yokusebenza: 2.4G noma 5.8GHz
Izinga lokudlulisela: isivinini sokudlulisa idatha singafika ku-300 ~ 600Mbps
Ukuhambisana: Ihambisana ne-IEEE 802.11/IEEE 802.11b/IEEE 802.11a
Okungenhla kuyinqubo yomlando yephrothokholi ye-IEEE802, okungekho nzima ukuyithola. Le phrothokholi ifaka womabili amabhendi e-2.4G kanye ne-5G. Ngaphezu kwalokho, ngokuthuthukiswa komlando kanye nokubuyekezwa njalo kwephrothokholi, izinga likhula liye phezulu. Njengamanje, isivinini esiphezulu sethiyori sebhendi ye-2.4G singafinyelela ku-300Mbps, futhi ukuqoshwa kwesivinini esiphezulu kwebhendi ye-5G kungafinyelela ku-866Mbps.
Isifinyezo: Izimiso eziyisisekelo ezisekelwa i-2.4GWiFi yilezi: 11, 11b, 11g, kanye ne-11n.
Izimiso eziyisisekelo ezisekelwa i-5GWiFi yi-11a, 11n, ne-11ac.
Okungenhla yincazelo yolwazi ye-WLAN Physical Layer PHY elethwa kuwe ngabakwa-Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. I-Shenzhen Haidiwei Optoelectronics Technology Co., Ltd. ingumkhiqizi onguchwepheshe bemishini yokuxhumana yokukhanya.imikhiqizo