2.4G WiFi inoshanda mubhandi re2.4GHz ine 2400 ~ 2483.5MHz.Chiyero chikuru chinoteverwa iIEEE802.11b/g/n chiyero chakatarwa neIEEE (Association of Electrical and Electronics Engineers) Heino maitiro aya zvakadzama:
- IEEE802.11 iwireless LAN chiyero chakagadzirwa neIEEE.Iyo inonyanya kushandiswa kugadzirisa iyo isina waya yekuwana kune vashandisi uye mushandisi terminals muhofisi LAN uye campus network.Basa rinonyanya kugumira pakuwana data, nehupamhi hwepamusoro hwe2Mb / s. Iyi teknolojia yakapera nokuti IEEE802.11 haina kukwana muhuwandu uye kureba kwekufambisa.
- Iyo IEEE802.11b standard, inozivikanwawo sewireless fidelity tekinoroji, inoshandisa iyo yakadzorwa pasi rose 2.4GHz free frequency band yekuwedzera kutevedzana kwakananga, nehupamhi hwe83.5MHz uye huwandu hwepamusoro hwekutumira data hwe11Mbps. mamita mukati meimba pasina kupinda mukati, inova ndiyo inonyanya kushandiswa isina waya yekutumira protocol ikozvino.
- IEEE802.11g chiyero chehybrid chinoenderana neyakajairwa 802.11b chiyero uye inopa huwandu hwekufambisa data hwe11Mbps pasekondi pa2.4GHz.Inoshandisa matekinoroji ekusimudzira akadai seaviri-channel bundling, iyo inovandudza waya isina waya yekufambisa bandwidth kusvika 108Mbps uye inogona. ipa chaiyo TCP / IP kuburikidza nepakati pe80 uye 90Mbps.
- IEEE802.11n inoshandisa MIMO (multi-in and multi-out) uye OFDM (orthogonal frequency division multiplexing) tekinoroji, inogona kuvandudza mwero wekutapurirana kweWLAN kubva pa54Mbps iripo inopihwa ne802.11a uye 802.11g kusvika 108Mbps, kunyange kusvika ku600Mbps. , uye inogona kutsigira yemhando yepamusoro izwi uye vhidhiyo kutapurirana.
| Kuenzanisa kwe802.11b/g/n maitiro | |||
|
| chizvarwa chechipiri | chizvarwa chechitatu | Chizvarwa chechina |
| standard | IEEE802.11b | IEEE802.11g | IEEE 802.11n |
| Modulation technique | CCK | BPSK,QP SK,160AM, 64QAM,DBPSK,DQPSK, | BPSK, QPSK, 160AM, 64QAM |
| Encoding type | DSSS | OFDM, DSSS | MIMO-OFDM |
| speed | 11Mbps | 54Mbps | 600Mbps |
| chiteshi bandwidth | 22MHz | 20MHz | 20, 40MHz |
| Zuva rekubvumirwa | 1999 | 2003 | 2009 |
| hunhu | Mutengo wakaderera, mukuru zviyero, tekinoroji uye zvigadzirwa zviri mature | Low hama simba kushandiswa, kureba kutapurirana chinhambwe, chakasimba simba rekupinda, diki coverage, high rate | Pasi-inoenderana ne 11b / g paunenge uchishanda pa 2.4G |
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