用於合作式無線系統之查表法相差編碼; Differential Encoding by a Look-up Table for Cooperative Wireless Systems

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Title:	用於合作式無線系統之查表法相差編碼;Differential Encoding by a Look-up Table for Cooperative Wireless Systems
Authors:	林瑋昇;Wei-Sheng Lin
Contributors:	通訊工程研究所
Keywords:	相差編碼;查表法;合作式無線系統;look-up table;Cooperative Wireless Systems;differential encoding
Date:	2011-07-07
Issue Date:	2012-01-05 14:50:29 (UTC+8)
Abstract:	2010年所提出查表法相差編碼在QAM可改善錯誤效能。本篇論文以此為基礎，將其運用在合作式無線系統的二種架構，架構一使用放大後傳送，在此架構下將16APSK查表法之相差編碼和16APSK傳統相差編碼比較；架構二使用分散式相差時空調變，在此架構下使用空時碼查表法之相差編碼，可避免以往相差時空調變星座圖擴展的問題，在查表法之相差編碼和架構二的比較分為放大後傳送、解碼後傳送二種方式來比較，最後把架構一和架構二在相同情況下做比較。 Differential encoding by a table was proposed in 2010 years. Using it can effectively improve error performance in the QAM. This paper as a basis, it uses two kinds of architecture in cooperative wireless systems. First one using the amplified-and -forward transmission, in this framework will compare 16APSK differential encoding by a table with the traditional 16APSK differential encoding . Second uses distributed differential space-time modulation. In this architecture using differential space-time modulation by a table to avoid the expansion of the constellation of the transmitted signals. The differential encoding by a table compare with architecture second is divided into amplified-and-forward and decoded-and-forward two ways. Finally put two architectures in the same case for comparison.
Appears in Collections:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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