Analog Circuits for Symbol-Likelihood Computation
Analog Circuits for Symbol-Likelihood Computation
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DOI：
10.1109/icecs.2006.379880
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
M. Frey;Hans-Andrea Loeliger;Patrick Merkli
中科院分区：
文献类型：
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作者：
M. Frey;Hans-Andrea Loeliger;Patrick Merkli
提出了一种新的模拟电路，用于将匹配滤波器的输出转换成适合于作为纠错码的模拟解码器的输入的符号和比特似然。新的电路可以适应许多星座，包括脉冲幅度调制（PAM）和正交幅度调制（QAM）和任意比特到符号的映射。与以前发表的电路相比，这些新电路计算精确的概率，并且它们更通用。
New analog circuits are presented to convert the output of a matched filter into symbol-and bit-likelihoods suitable as input to analog decoders for error correcting codes. The new circuits can be adapted to many constellations including pulse amplitude modulation (PAM) and quadrature amplitude modulation (QAM) and for arbitrary bit-to-symbol mappings. In contrast to a previously published circuit these new circuits compute exact probabilities and they are more versatile.