Soft solution mapping method
A soft demapping and constellation mapping technology, applied in the field of soft demapping, can solve the problems of high computational complexity, large amount of calculation, inconvenient hardware implementation, etc., and achieve the effect of improving computing speed, small performance loss, and reducing resources
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[0052] The soft demapping method proposed by the present invention is described in detail below with reference to the drawings and embodiments.
[0053] In the method of the present invention, the hard decision boundary refers to the decision boundary used when the hard decision is executed. The normalized hard decision boundary is the hard decision boundary of the normalized constellation diagram. The normalized hard decision boundary is determined by the constellation diagram and has nothing to do with the channel state. The hard decision boundary of the phase bit is the same as the normalized hard decision boundary.
[0054] In addition, the method of the present invention is used to perform soft demapping on the receiving end of the transmitted signal of the constellation mapping based on the Gray-mapped APSK constellation diagram (hereinafter referred to as Gray-APSK constellation mapping), and the constellation order of the Gray-APSK constellation diagram is M=2 m , The num...
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