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非方形QAM映射比特软信息计算方法

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摘要 针对32-QAM等非方形星座映射比特软信息的计算比较复杂的问题,提出了一种比特软信息计算方法。该算法通过对星座图进行近似分割,根据接收符号与判决边界的最小欧式距离来简化软信息的计算。仿真结果表明,该算法对译码信噪比门限和收敛速度几乎没有损失,而解映射的复杂度却大大降低,更有利于硬件实现。
出处 《有线电视技术》 2011年第6期35-37,101,共4页 Cable TV Technology
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参考文献5

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