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Quadrupling Wi-Fi speeds with 802.11n by James M. Wilson (Aug. 9, 2004) 9677060 陳建芳

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Higher Performance WLAN ,[object Object],[object Object],[object Object]

Higher Performance WLAN PHY 層的標準規定了所使用的頻帶、調變方式、傳輸速率等。 MAC 層的標準規定了所使用的網路拓蹼、封包長度、連結漫遊等功能。 100 Mbps 200+ Mbps 802.11n 25 Mbps 54 Mbps 802.11a 25 Mbps (when .11b is not present) 54 Mbps 802.11g 5 Mbps 11 Mbps 802.11b Media Access Control Layer, Service Access Point (MAC SAP) Estimates Over-the-Air (OTA) Estimates IEEE WLAN Standard

提高物理層傳輸速率 ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Table 1. Comparison of different 802.11 transfer rates. (Source: Intel Labs)

Over-the-air (OTA) throughput with different bandwidth channels.

802.11 Legacy Coexistence ,[object Object],[object Object]

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