Threshold for the early detection method and an output SNR stop criterion for Turbo codes

Xiangming Li; Guangxin Yue; Changchuan Yin

Threshold for the early detection method and an output SNR stop criterion for Turbo codes

Xiangming Li^*
, Guangxin Yue
, Changchuan Yin

^*Corresponding author for this work

Beijing University of Posts and Telecommunications

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A hypothesis to take the physical channel and Turbo decoder as a joint equivalent AWGN channel was presented. On the basis of this hypothesis, the SNR (signal-to-noise ratio) of the Turbo decoder output LLR (logarithm likelihood ratio) can be used as a criterion to stop the iterative procedure. In order to reduce the decoder complexity, the symbol whose LLR is larger than a given threshold can be decided for output. A method to determine the theoretical value of threshold was given.

Original language	English
Pages (from-to)	46-50
Number of pages	5
Journal	Beijing Youdian Xueyuan Xuebao/Journal of Beijing University of Posts And Telecommunications
Volume	23
Issue number	1
Publication status	Published - Mar 2000
Externally published	Yes

Cite this

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abstract = "A hypothesis to take the physical channel and Turbo decoder as a joint equivalent AWGN channel was presented. On the basis of this hypothesis, the SNR (signal-to-noise ratio) of the Turbo decoder output LLR (logarithm likelihood ratio) can be used as a criterion to stop the iterative procedure. In order to reduce the decoder complexity, the symbol whose LLR is larger than a given threshold can be decided for output. A method to determine the theoretical value of threshold was given.",

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AU - Yue, Guangxin

AU - Yin, Changchuan

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N2 - A hypothesis to take the physical channel and Turbo decoder as a joint equivalent AWGN channel was presented. On the basis of this hypothesis, the SNR (signal-to-noise ratio) of the Turbo decoder output LLR (logarithm likelihood ratio) can be used as a criterion to stop the iterative procedure. In order to reduce the decoder complexity, the symbol whose LLR is larger than a given threshold can be decided for output. A method to determine the theoretical value of threshold was given.

AB - A hypothesis to take the physical channel and Turbo decoder as a joint equivalent AWGN channel was presented. On the basis of this hypothesis, the SNR (signal-to-noise ratio) of the Turbo decoder output LLR (logarithm likelihood ratio) can be used as a criterion to stop the iterative procedure. In order to reduce the decoder complexity, the symbol whose LLR is larger than a given threshold can be decided for output. A method to determine the theoretical value of threshold was given.

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JF - Beijing Youdian Xueyuan Xuebao/Journal of Beijing University of Posts And Telecommunications

IS - 1

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Threshold for the early detection method and an output SNR stop criterion for Turbo codes

Abstract

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