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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8385

    Title: 電腦搜尋之超級正交空時籬柵碼;Computer Search of Super-Orthogonal Space-Time Trellis Codes
    Authors: 陳威廷;Wei-Ting Chen
    Contributors: 通訊工程研究所
    Keywords: 超級正交空時籬柵碼;空時籬柵碼;生成矩陣;Super-orthogonal space-time trellis codes;space-time trellis codes;generator matrix
    Date: 2009-07-08
    Issue Date: 2009-09-22 11:24:17 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 超級正交空時籬柵碼(super-orthogonal space-time trellis codes, SOSTTCs)[10]是一個需要經由人為事先設計好籬柵碼的架構,可確實提升空時籬柵碼(space-time trellis codes,STTCs)的效能。在2007年,一種藉由生成矩陣(generator matrix)來表示超級正交空時籬柵碼的方法被提出,其允許有系統的搜尋所有可能的碼。在這個架構中,星座圖的轉置角度在電腦搜尋前就已經被決定。然而,此將無法肯定轉置角度是理想的。在這篇論文中,我們提出三種不同的生成矩陣去表示超級正交空時籬柵碼,在這些提出的架構,星座圖的轉置角度將利用電腦搜尋去決定。經由我們的架構所找到的碼將可勝過以往已知的碼 Super-orthogonal space-time trellis codes (SOSTTCs) designed by hand can improve the performance of space-time trellis codes. In 2007, a representation of SOSTTCs based on a generator matrix was proposed which allows systematic searches of possible codes. In this scheme, the rotation of the constellation is determined before computer searches. However, the optimality of the rotation cannot be guaranteed. In this thesis, we propose three different representations of SOSTTCs which are also based on a generator matrix. In the proposed schemes, the rotation of the constellation is determined by computer searches. New codes of our schemes that outperform previously known codes are found.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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