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標題: 高速無線區域網路之架構
Architecture for High Speed Wireless LAN
作者: 張永賢
Chang, Yung-Hsien
關鍵字: 無線區域網路;Wireless LAN;互補碼調變;CCK
出版社: 電機工程學系
由於現代人資訊需求量很高,除了資料傳輸、檔案傳送之外,甚者聲音、影像等即時傳送。然而IEEE 802.11所訂定的標準中僅提供1和2Mbps的傳輸速率,此傳輸速率已無法滿足現代人的需求。所以在1999年九月IEEE 802.11b標準的通過,延續直接序列展頻技術,採用新的調變方式─互補碼調變,額外地增加兩種較高的傳輸速率,分別是5.5和11Mbps。

In the original IEEE 802.11 standard two data rate, 1 and 2Mbps, are provided. However, the data rates are too slow to support most general business requirements. Recognizing the critical need to support higher data transmission rates, the IEEE ratified the 802.11b standard for transmissions of up to 11Mbps by using complementary code keying (CCK) in September 1999.
In this thesis, the design of a high-speed wireless LAN baseband processor and a new architecture for correlator of CCK demodulation are proposed. Beside, some important technologies for wireless LAN including channel characteristic, spread spectrum, carrier recovery, and anti-fading are appeared and explained in this paper.
By using the new architecture for correlator of CCK demodulation, the complexity of correlator could be reduced effectively.
Appears in Collections:電機工程學系所

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