長區塊之相差空間調變;Long-Block Differential Spatial Modulation

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Title:	長區塊之相差空間調變;Long-Block Differential Spatial Modulation
Authors:	李昱君;Lee, Yu-Chun
Contributors:	通訊工程學系
Keywords:	長區塊之相差空間調變
Date:	2021-07-12
Issue Date:	2021-12-07 12:29:51 (UTC+8)
Publisher:	國立中央大學
Abstract:	在行動通訊的多天線技術中，相差空間調變是一種不需要通道估計和前導訊號的空間調變，而相差空間調變的架構為每個區塊的時間等同於傳送天線的數目，且一次只使用一根天線，並藉由選擇傳送天線來多傳額外的資料位元。在本論文中，我們提出了兩種長區塊之相差空間調變，亦即每個區塊的時間數量大於天線數量之架構，可藉由更多的天線排列選擇來傳更多資料位元。相差空間調變使用的低複雜度檢測器，必須針對所有天線排序去一一做比對，但若此法應用在本架構的情況下，將會變得相當地耗時費工。因此，本文針對長區塊的相差空間調變，提出更進一步改良的低複雜度檢測器，在只掉失些微錯誤性能的情況下，卻大幅降低檢測的複雜度。;Among various multi-antenna technologies of mobile communication, differential spatial modulation (DSM) is a kind of spatial modulation technique that does not need pilot symbols and channel estimation. The original architecture used by DSM is that the number of antennas and time must be the same,and each time only one antenna is activated to transmit signals. DSM transmits additional information bits by selecting antennas. In this thesis, we propose two long-block DSM schemes,whose quantity of time is longer than the number of antenna in each block. By doing so, more additional information bits can be transmitted. The low-complexity detector of DSM compares all antenna indexs one by one, and it is very complicated for the proposed long-block DSM scheme. Therefore, we propose a further improved low-complexity detector for the long-block DSM. This method would cause only a slight loss of error performance but a great reduction of detected time.
Appears in Collections:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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