雙向中繼站通道在合作式通訊系統架構下使用增強型靜態解碼轉傳協定結合網路編碼之符元錯誤率分析

SER Analysis of Enhanced Static Decode-and-Forward With Cooperative Network Coding in Two-Way Relay Channel

許軒寧(Shiuan-Ning Hsu)

指導教授 ： 劉維正

國立中正大學/工學院/通訊工程學系/碩士(2013年)

摘要

合作式通訊(cooperative communications)是近年興起的無線通訊技術，在新一代無線通訊系統中有著重要地位，如作為4G(fourth-generation)國際標準的增强型長期演進技術(Long Term Evolution–Advanced,LTE–Advanced)及全球互通微波存取(Worldwide Interoperability for Microwave Access,WiMAX)都有用到中繼站的原理。網路編碼則是將來自多個傳送端的訊息用編碼技術加以結合後同時傳輸至下一個接收端能有效提升系統吞吐量，提高傳輸效率。本論文將建構一個使用增強型靜態解碼轉傳(Ehance Static Decode-and-Forward, ESDF) 協定的單一中繼站合作式通訊系統結合網路編碼，研究當在PSK及QAM訊號調變時雷利、仲上兩種無線通道(Rayleigh、Nakagami fading channel) 下符元錯誤率的情形，並分析系統在不同的傳輸速率時系統符碼錯誤率的變化。根據結果，我們所探討之系統在增強時會有較好的符元錯誤率，也印證了系統在可靠度上獲得提升。

關鍵字

符元錯誤率 ； 增強型靜態解碼轉傳 ； 網路編碼 ； 合作式通訊 ； 分集多工權衡

並列摘要

Cooperative communications are emerging wireless communications techniques recently. It plays an important role in new generation of wireless communications. For instance, Long Term Evolution–Advanced (LTE–Advanced) and WorldwideInteroperability for Microwave Access (WiMAX) as international standard of fourth-generation, which the relaying technology applies to. Network coding technology combines several messages at intermediate nodes and transmits the mixed message to destination nodes. Network coding could enhance throughput and improve transmission performance. In this thesis, we consider a cooperative communications system using one relay Enhance Static Decode-and-Forward (ESDF) protocol with network coding and one relay node. We research symbol error rate of this system with PSK and QAM modulation under Rayleigh and Nakagami fading channels. We analyze the variable of symbol error rate in different systems which have different transmission rates. The results show that our system has better symbol error rate which means the improvement of the reliability of system.

並列關鍵字

symbol error rate ； enhance static decode and forward ； network coding ； Cooperative communications ； diversity-multiplexing tradeoff

參考文獻

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