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Decoding method for LDPC coder

A decoder and decoding technology, applied in the field of termination decoding, can solve the problems of high power consumption, incomplete termination decoding conditions, high bit error rate, etc., and achieve the effect of ensuring correctness

Active Publication Date: 2014-07-02
HUNAN GOKE MICROELECTRONICS
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AI Technical Summary

Problems solved by technology

[0024] The technical problem to be solved by the present invention is to provide a method for LDPC decoder to terminate decoding in order to solve the problems of large power consumption, incomplete conditions for terminating decoding, and high bit error rate in the existing method.

Method used

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  • Decoding method for LDPC coder
  • Decoding method for LDPC coder
  • Decoding method for LDPC coder

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Embodiment Construction

[0037] The logic block diagram of hardware realization of the present invention is as image 3 , the specific implementation steps are as follows: S1, the required decoding of this layer Information and verification information are taken out from the posteriori information storage module and the verification information storage module respectively, and the The sign bit is temporarily stored. S2, send the data into the operation unit to calculate and update the verification information and posteriori information S3, calculate the verification equation Hi T x and determine whether the sign bit is flipped by XOR. S4. Store the new posterior information and verification information back into the storage module. If S3 is satisfied, output the decoding result, otherwise return to S1 to start the next iteration until reaching the set maximum number of iterations.

[0038] In order to solve all check equations satisfying H T x=0, but the decoding is not necessarily completely...

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Abstract

The invention discloses a decoding method for an LDPC coder. When a layered decoding algorithm is adopted and decoding of each layer is completed, except whether a calibration equation is met, whether overturn of sign bit decodes of all posteriori information (please find the formula in the specification) participating in the decoding happens is further calculated, and correctness and completeness of the termination condition of an HiTx result calculated previously are ensured. According to the decoding method for the LDPC coder, when hardware is achieved, the fault iteration termination situation can be avoided by only adding a small quantity of hardware logics so that the decoding condition of the system can be more complete and a lower bit error rate can be obtained. The decoding method for the LDPC coder can enable a fall line transitional zone of the bit error rate of the LDPC coder to be narrower and enable an error code flat layer to be lower.

Description

technical field [0001] The invention relates to a method for terminating decoding, in particular to a method for LDPC decoder terminating decoding. Background technique [0002] In the whole communication system, channel coding is a very important part, which ensures the reliability of the communication system. Today's mobile communication tends to real-time high-speed transmission more and more. In this case, users pay more attention to data reliability. Therefore, the algorithm research and hardware implementation of channel coding with excellent performance are particularly important. Low Density Parity Check LDPC (Low Density Parity check, LDPC) code is one of the key technologies in mobile communication. Its excellent error correction performance and good application prospects in channel reliable transmission have become the most popular in the field of channel coding today. attention-grabbing research hotspot. The trend that LDPC codes will replace Turbo codes in man...

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Application Information

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IPC IPC(8): H03M13/11
Inventor 聂正华
Owner HUNAN GOKE MICROELECTRONICS
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