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題 名 | Scalable Recursive Chien Search Architecture for Block Codes Hard-Decoding=擴展性遞迴秦式搜尋電路於區塊碼解碼之研究 |
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作 者 | 洪偉文; 林義楠; 黃植振; | 書刊名 | 明志學報 |
卷 期 | 41:1 2009.06[民98.06] |
頁 次 | 頁33-38 |
分類號 | 448.532 |
關鍵詞 | 線性區塊碼; 秦式搜尋演算式; 遞迴式; 可擴展性; Linear block codes; Chien search architecture; Recursive; Scalable; |
語 文 | 英文(English) |
中文摘要 | 線性區塊碼通道編碼中使用代數解碼過程時對於解出錯誤多項式後,利用秦式搜尋演算法,將場域內之所有元素代入多項式中,以解出滿足此多項式解之所有的根,並找出發生錯誤位元的位置。本文,乃是針對欲解出多項式根的秦式演算重組電路演算使其具遞迴性因而可使計算的核心電路模組達到最小化,同時加入擴展模組的機制,提出一個具遞迴解碼及擴展性的秦式搜尋計算架構。本文提出之架構有利於運用在日益便利之行動嵌入式裝置上電路的實現。 |
英文摘要 | The Chien search is a crucial arithmetic operation for the error correction codes and the numder of roots involved in the block codes decoding. Several efficient modified Chien search algorithm architectures have been proposed. However, there require large circuit space, thus increasing the cost of the decoder. This would be a drawback when designing circuits in systems requiring low cost and low power consumption. However, some cost saving can be attained by compromised speed, as in portable devices and many embedded systems. This paper proposes a scalable and recursive σi.χ²+σj,which is the core circuit module of chien search operation. A scalable and recusive Chien search can thus be obtained based on the proposed architecture. Embedded system engineers may specify a target Chien search operation with appropriate scaling circuits. |
本系統中英文摘要資訊取自各篇刊載內容。