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題 名 | 錯誤更正碼應用於合作式通訊系統=Cooperative Communication Systems Using Error Correction Codes |
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作 者 | 羅浩綸; | 書刊名 | 新新季刊 |
卷 期 | 41:4 2013.10[民102.10] |
頁 次 | 頁180-186 |
分類號 | 448.8 |
關鍵詞 | 合作式通訊系統; 壓縮轉傳機制; Cooperative communication system; CF protocol; |
語 文 | 中文(Chinese) |
中文摘要 | 本文提出一種應用於合作式通訊系統(Cooperative Communication System)的壓縮轉傳機制(compress-and-forward),當中繼站(relay)至接收端(destination)的通道品質比傳送端(source)至接收端的通道品質更優時,壓縮轉傳機制的解碼效益會比解碼轉傳機制(decode-and-forward)要來得好;但是這兩種機制各有其適用的通道狀況,因此更進而提出一種可調適性解碼壓縮轉傳機制(adaptive decode-compress-forward),在多變化的通道狀況,模擬結果如所預期,顯示中繼站可動態的選擇合適的轉傳機制來達到最佳的效益。另外我們也選擇路比碼(LT code)作為編碼,這種路比碼若應用於合作式通訊系統,整個系統將會明顯的提昇其吞吐量。 |
英文摘要 | In this article, a compress-and-forward (CF) protocol for cooperative communication systems is first investigated. It is found that the throughput is superior to that of the decode-and-forward (DF) protocol when the relay-to-destination channel is stronger than the source-to-relay channel. A full-duplex (adaptive decode-compress-forward, ADCF) protocol that is devised based on both CF and DF protocol is then proposed. In the proposed protocol, the CF and DF protocols are adaptively switched, depending on the channel conditions. Simulation results show that the proposed scheme smoothly switches between the two conventional protocols to cope with different channel conditions. In addition, the study demonstrates that the throughput of the overall system is obviously enhanced using the Luby transform (LT) code. |
本系統中英文摘要資訊取自各篇刊載內容。