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** âËÁ´ 11a ¨ÐÊÒÁÒöãªéä´é੾ÒÐàÁ×èÍÍØ»¡Ã³ì¹Ñé¹àª×èÍÁµè͡ѺÍØ»¡Ã³ìẺ IEEE802.11a (àªè¹ Access Point ẺÁҵðҹ IEEE802.11a
à»ç¹µé¹)
***âËÁ´ 11g ãªéä´é੾ÒÐàÁ×èͤسàª×èÍÁµè͡ѺÍØ»¡Ã³ìẺ IEEE 802.11g (àªè¹ Access Point
·ÕèʹѺʹع IEEE 802.11g)
¢éͺѧ¤Ñºà¡ÕèÂǡѺ¡ÒÃãªé᪹à¹ÅµèÒ§æ ã¹»ÃÐà·È½ÃÑè§àÈÊ
¨Ó¹Ç¹áª¹à¹Å·ÕèÊÒÁÒöãªéä´é¡Ñº wireless LAN ᵡµèÒ§¡Ñ¹ä»µÒÁáµèÅлÃÐà·È â´Âã¹»ÃÐà·È½ÃÑè§àÈÊ Í¹Ø
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ÒµãËéãªéä´éà¾Õ§ 4
᪹à¹Å¤×Í (channel 10, 11, 12, 13) àÁ×èÍãªé wireless networks
•
Áҵðҹ: IEEE 802.11a/g
•
¢éͺѧ¤Ñº: ETSI 300 328, à¤Ã×èͧËÁÒ CE
•
¡ÒáÓ˹´áª¹à¹Å:
– Channel 10 (2457 MHz)
– Channel 11 (2462 MHz)
– Channel 12 (2467 MHz)
– Channel 13 (2472 MHz)
RF Band
2.4GHz, 5GHz
᪹à¹Å·Õèãªéä´é
áªá¹Å·Õè͹Ø
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ÍØ»¡Ã³ì
à¤Ã×èͧÃѺÊè§
à¾ÒàÇÍÃìàÍÒµì¾ØµÁҵðҹ
5 mW
ÇÔ¸Õ¡ÒÃÃѺÊ觢éÍÁÙÅ
âËÁ´ 11a: OFDM
âËÁ´ 11b: DSSS
âËÁ´ 11g: OFDM
ÍѵÃÒ¡ÒöèÒÂâ͹¢éÍÁÙÅ (Mbps) *
âËÁ´11a**
âËÁ´ 11b: 11, 5.5, 2 áÅÐ 1
âËÁ´ 11g*** : 54, 48, 36, 24, 18, 12, 9 áÅÐ 6
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àÊÒÍÒ¡ÒÈÀÒÂã¹ 2 EA (Main/Aux)