Turbo code decoder, component decoder for Turbo code and component decoding method

• Main Authors: XIE YINGHUI, AN YINLONG, YUE LIPENG, FANG XINJIA, WEI XING
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

The invention discloses a Turbo code decoder, a component decoder for a Turbo code and a component decoding method. The convolutional code state transition device is used for calculating a backward transition state of the component encoder, an output value in the backward transition state, a forward transition state and an input value in the forward transition state; the backward branch transitionprobability module is used for calculating the backward branch transition probability of the system information bit under each backward transition state according to the system information bit and the check bit which are input in an inverted order; the backward recurrence probability module is used for calculating a backward recurrence probability value of the system information bit in each backward transition state; the forward branch transition probability module is used for calculating the transition probability of each forward branch; the forward recurrence probability module is used forcalculating a forward recu