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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30353
標題: | 應用於電力線通訊之多重近接系統架構 A Multiple-Access Design for Power-Line Communication |
作者: | Kwang-Hong Cheng 鄭光宏 |
指導教授: | 林茂昭 |
關鍵字: | 電力線通訊,交織多址,正交分頻多工,位元承載, Powerline communication,IDMA,OFDM,Bit-loading, |
出版年 : | 2007 |
學位: | 碩士 |
摘要: | 電力線通訊是指利用電力線來傳輸資料的一種通訊方式。由於具有高便利性和低成本兩大特徵,電力線通訊被認為能夠有效地處理當前最後一哩(Last Mile)接取的問題。然而,由於電力線並不是一種理想的通訊媒介,電力線通訊在傳輸時會受到相當強烈的干擾。
我們設計了一種可應用於電力線傳輸的多重近接架構。和當今流行的Home-Plug 1.0、HomePlug AV等商業規格不同的是,這種架構採用交織多址(IDMA)和正交分頻多工(OFDM)的組合作為系統主幹。除此之外,我們也使用了位元承載(Bit-Loading)技術,以期增進系統整體的傳輸效率。 Power-Line Communication(PLC) uses existing electric lines to transmit broadband signals in residential networking environments. Being inexpensive and convenient, PLC is a potential solution to the last-mile access problem. However, the transmission environment in PLC is quite hostile since power-lines are not initially designed for data transmission. Our work deals with a multiple-access system for PLC applications. Unlike the specifications defned in HomePlug 1.0 and HomePlug AV, the proposed system consists of the interleave-division multiple access(IDMA) scheme and the well-known OFDM transceiver. To enhance the system performance, we need to use bit-loading to match the PLC channel which consists of subchannels with great variety. We also develop a bit-loading scheme which can significantly improve the system performance since conventional bit-loading algorithms are not appropriate for IDMA-OFDM systems. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30353 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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檔案 | 大小 | 格式 | |
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ntu-96-1.pdf 目前未授權公開取用 | 3.81 MB | Adobe PDF |
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