ieee 802.11n physical layer 介紹

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IEEE 802.11n Physical Layer 介紹. 班級:晶片三甲 教師:林瑞源 學號: 49737014 姓名:馬恩昇. 目錄. IEEE 802.11n IEEE 802.11 標準 的 三種介質實體 1. 直接序列式展頻 ( Direct Sequence Spread Spectrum ) 2. 跳頻式展頻 (Frequent Hopped Spread Spectrum , FHSS) 3. 擴散式紅外線 (Diffused IR) 多輸入多輸出技 術 ( Multi-Input Multi-Output , MIMO ) 應用 - PowerPoint PPT Presentation

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  • IEEE 802.11n Physical Layer 49737014 *

  • IEEE 802.11nIEEE 802.111. Direct Sequence Spread Spectrum 2.(Frequent Hopped Spread SpectrumFHSS)3.(Diffused IR)Multi-Input Multi-OutputMIMO

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  • IEEE 802.11n20041IEEE802.1120099300Mbit/s802.11b50802.11g10802.11nMulti-Input Multi-OutputMIMO802.11n 600 Mbps2006 IEEE >100 Mbps 2.45 GHz >100m

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    802.11Freq()(Mbit/s)(Mbit/s)Mod.rin.(m)r(m)-19972.40.922~20~10011a19995235454~35~12011b19992.44.31111~38~14011g20032.4195454~38~14011n20092.4574248248~70~25011y20083.7235454~50~5000

  • 802.11n

    802.11nAirPort Extreme

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  • 11g54 Mbps11n144 Mbps11n 11n11g144 Mbps 11n54 MbpsAP*

  • IEEE 802.11(Multiple-Rates) (Direct Sequence Spread Spectrum DSSS) (Frequent Hopped Spread SpectrumFHSS) (Diffused IR)*

  • Direct Sequence Spread Spectrum

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  • Frequent Hopped Spread Spectrum*

  • Diffused IR

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  • Multi-Input Multi-OutputMIMO MIMO transmit power expenditurethroughputMIMO *

  • (Wireless Local Area Network)802.11b/a/g ( IEEE ) 2006 1 24 EWC ( Enhanced Wireless Consortium ) 802.11n 802.11n WiFi 802.11n*

  • Intel WLAN 802.11n 600M bit/s 802.11 a/b/g 2.4 G 5 GHz 20M Hz 40M Hz 1 ~ 4 100 M 802.11 a/b/g 11 M 54 M VoIPIPTVWimax 3G Wi-Fi Wireless Fidelity IEEE 802.11Wi-Fi*

    802.11Freq()(Mbit/s)(Mbit/s)Mod.rin.(m)r(m)11n20092.4574248248~70~250

  • http://zh.wikipedia.org/zh-hk/IEEE_802.11http://zh.wikipedia.org/zh-tw/MIMOhttp://www.epochtimes.com/b5/9/9/15/n2657966.htmhttp://tw.myblog.yahoo.com/dr-free/article?mid=386&prev=-2&next=173&page=1http://www.wi-fiplanet.com/tutorials/article.php/3680781http://www.worldlingo.com/ma/enwiki/zh_tw/IEEE_802.11n

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