比特交織迭代譯碼系統(tǒng)的迭代控制
Iterative Control of Bit-Interleaved Coded Modulation with Iterative Decoding
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摘要: 利用迭代譯碼時(shí)的外部信息交換圖特點(diǎn)，提出了一種非常簡單有效的迭代控制策略。首先通過外部信息交換圖分析得到一個(gè)有關(guān)信噪比的迭代次數(shù)矢量，其次系統(tǒng)根據(jù)估計(jì)信噪比選擇對(duì)應(yīng)值，從而實(shí)現(xiàn)迭代控制。該方案實(shí)現(xiàn)簡單，同時(shí)也減少了系統(tǒng)延遲，便于分析系統(tǒng)性能。
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關(guān)鍵詞:
- 比特交織編碼調(diào)制; 迭代譯碼; 外部信息交換圖; 迭代控制
Abstract: A simple and efficient iterative control algorithm is proposed. An iterative degree vector about SNR is firstly derived by analysis of extrinsic information transfer chart, iterative control is then implemented by selecting the relevant value according to estimated SNR. Simple in realization and high in performance, this method can be utilized in performance analysis. -
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