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发明授权
US07120851B2 Recursive decoder for switching between normalized and non-normalized probability estimates 有权
用于在归一化和非归一化概率估计之间切换的递归解码器

Recursive decoder for switching between normalized and non-normalized probability estimates
摘要：
The present invention relates generally to error-correction coding and, more particularly, to a decoder for concatenated codes, e.g., turbo codes. The present invention provides a decoder for decoding encoded data, the decoder comprising: a processor having an input which receives probability estimates for a block of symbols, and which is arranged to calculates probability estimates for said symbols in a next iterative state; normalising means which normalises said next states estimates; a switch that receives both said normalised and said unnormalised next state estimates, the output of the switch being coupled to the input of the processor; wherein the switch is arranged to switch between the normalised and unnormalised next state estimates depending on the iterative state.
摘要（中）：

本发明一般涉及纠错编码，更具体地说，涉及用于级联码（例如，turbo码）的解码器。 本发明提供了一种用于对编码数据进行解码的解码器，该解码器包括：一个处理器，具有一个输入，该输入接收一个符号块的概率估计，并且被配置为在下一个迭代状态下计算所述符号的概率估计; 规范化所述下一状态估计的正规化装置; 接收所述归一化和所述非标准化下一状态估计的开关，所述开关的输出耦合到所述处理器的输入; 其中所述开关被布置为根据迭代状态在归一化和非标准化的下一状态估计之间切换。

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