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Log likelihood ratio arithmetic circuit, transmission apparatus, log likelihood ratio arithmetic method, and program
Log likelihood ratio arithmetic circuit, transmission apparatus, log likelihood ratio arithmetic method, and program
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机译:对数似然比算术电路,发送装置,对数似然比算术方法及程序
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摘要
A log likelihood ratio arithmetic circuit for calculating a log likelihood ratio from information of a coordinate of a reception signal point to be applied to a communication system using a quadrature amplitude modulation method, wherein the circuit limits a scope within which a value of the log likelihood ratio varies corresponding to a position of the reception signal point to a range between adjacent signal points including a hard-decision threshold of a bit, and wherein the value of the log likelihood ratio does not vary outside of the range between the adjacent signal points.
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