Method and device for quantizing likelihood quotients
AssigneeVodafone Holding GmbH
InventorWolfgang Rave
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Abstract
A method in signal processing is used for quantizing likelihood quotients of binary random variables for transmitting between at least two signal processing units. Decision levels and reconstruction levels of a quantization of likelihood quotients are thereby determined by maximizing corresponding information between the binary random variables and the associated quantized likelihood quotients at a prescribed probability distribution of the likelihood quotients. A corresponding quantization device determines decision levels and reconstruction levels of a quantization of the likelihood quotients by maximizing the corresponding information between the binary variables and the associated quantized likelihood quotients at a prescribed probability density of the likelihood quotients.
Claims9
A method in a signal processing for quantization of likelihood quotients of binary random variables for a transmission between two or more signal processing units, comprising:
- determining, by a quantization device, decision levels and reconstruction levels of a quantization of the likelihood quotients by a maximization of corresponding information between the binary random variables and the corresponding quantized likelihood quotients for a given probability distribution of the likelihood quotients.
A quantization device in a signal processing for quantization of likelihood quotients of binary random variables for a transmission between two or more signal processing units, comprising:
- means for determination of decision levels and reconstruction levels of a quantization of the likelihood quotients by a maximization of corresponding information between the binary random variables and the corresponding quantized likelihood quotients for a given probability distribution of the likelihood quotients;
- and
- a detection unit for detecting a variance of the likelihood quotients prior to the quantization for the determining of the reconstruction and decision levels.
Dependencies are inferred from the claim text.