用於雙向中繼網路之籬柵編碼調變結合相差編碼;Trellis-Coded Modulation with Differential Encoding for Two-Way Relaying

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题名:	用於雙向中繼網路之籬柵編碼調變結合相差編碼;Trellis-Coded Modulation with Differential Encoding for Two-Way Relaying
作者:	王淑娟;Wang, Shu-Chuan
贡献者:	通訊工程學系在職專班
关键词:	雙向中繼網路;實體層網路編碼;相差編碼;籬柵編碼調變;Two-way relaying;physical-layer network coding;differential encoding;Trellis-coded modulation
日期:	2019-07-15
上传时间:	2019-09-03 15:22:52 (UTC+8)
出版者:	國立中央大學
摘要:	無線通訊所需傳送的資料量越來越多，所以如何越短時間內傳送資料量是重要的研究主題。兩終端節點藉由中繼節點傳送訊號至彼此的雙向中繼網路為近年來熱門的研究，而利用實體層網路編碼的兩階段雙向中繼網路更是一種高頻譜效益的技術。另一方面，相差編碼不需要傳送前導符元做通道估測，故不會造成速率損失，因此使用相差編碼的雙向中繼網路，是值得研究的題目。籬柵編碼調變是一個結合通道編碼與調變的技術，它可以在不增加頻寬的情況下，提供有效率的數位傳輸。在加成性白高斯雜訊通道上，傳送端訊號先經過籬柵編碼調變後再做相差編碼的做法已經被提出研究過。在本篇論文中，我們先探討三階段解碼轉傳架構下，比較籬柵編碼調變加相差編碼及只有相差編碼的錯誤效能。接著，我們比較在二階段解碼轉傳架構下，當使用三符元檢測時，兩種作法的錯誤率效能。 ;Wireless communications are required to transmit data more efficiently. An important topic is how to transmit the same quantity of data in a shorter period of time. Recently, two-way relaying is a popular subject, where two terminal nodes transmit to each other with the help of the relay node. Two-phase two-way relaying (TPTWR) using physical-layer coding is a bandwidth efficient technique. On the other band, differential encoding (DE) does not require the transmission of pilot symbols for channel estimation, so no rate loss is caused. Differential encoding for two-way relaying is a topic of interests. Trellis-coded modulation is a combination of channel coding and modulation technology that provides efficient digital transmission without increasing bandwidth. For additive white Gaussian noise channels , TCM with differential encoding(TCM-DE), Where trellis coding is done followed by differential encoding, was proposed and studied. In this thesis, we first compare TCM-DE and DE for the three-stage decoding and forward scheme. Then for the two-stage decoding and forward scheme, The error performances of TCM-DE and DE using three-symbol detection are discussed and compared.
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