Title:
DECODING DEVICE AND DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/042786
Kind Code:
A1
Abstract:
In the present invention, a data storage unit (44) inputs data which has been subject to LDPC encoding. A min-sum processing unit (46) executes a min-sum algorithm for the data that has been input, thereby alternately executing check node processing for updating an extrinsic value ratio on the basis of a prior value ratio, and variable node processing for updating the prior value ratio on the basis of the extrinsic value ratio. A control unit (42) adjusts the magnitude of a normalizing constant to be used when updating the extrinsic value ratio in the check node processing according to the magnitude of the prior value ratio updated in the variable node processing.
Inventors:
HAYAMI ATSUSHI (JP)
Application Number:
PCT/JP2011/005290
Publication Date:
April 05, 2012
Filing Date:
September 20, 2011
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
HAYAMI ATSUSHI (JP)
HAYAMI ATSUSHI (JP)
International Classes:
H03M13/19
Other References:
CHEN RONG ET AL.: "Modified Normalized Min-Sum Decoding of LDPC Codes", SIGNAL PROCESSING, 2008. ICSP 2008., 29 October 2008 (2008-10-29), pages 1811 - 1814
XIAOFU WU ET AL.: "Adaptive-Normalized/Offset Min-Sum Algorithm", IEEE COMMUNICATIONS LETTERS, vol. 14, no. 7, July 2010 (2010-07-01), pages 667 - 669
MAHDI SHAGHAGHI ET AL.: "Combined Normalized and Offset Min-Sum Decoding over Partial Response Channels, Information, Communications and Signal Processing", ICICS 2009., 10 December 2009 (2009-12-10)
JINGHU CHEN ET AL.: "Reduced-Complexity Decoding of LDPC Codes", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 53, no. 8, August 2005 (2005-08-01), pages 1288 - 1299
XIAOFU WU ET AL.: "Adaptive-Normalized/Offset Min-Sum Algorithm", IEEE COMMUNICATIONS LETTERS, vol. 14, no. 7, July 2010 (2010-07-01), pages 667 - 669
MAHDI SHAGHAGHI ET AL.: "Combined Normalized and Offset Min-Sum Decoding over Partial Response Channels, Information, Communications and Signal Processing", ICICS 2009., 10 December 2009 (2009-12-10)
JINGHU CHEN ET AL.: "Reduced-Complexity Decoding of LDPC Codes", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 53, no. 8, August 2005 (2005-08-01), pages 1288 - 1299
Attorney, Agent or Firm:
MORISHITA, SAKAKI (JP)
Sakaki Morishita (JP)
Sakaki Morishita (JP)
Download PDF:
Claims:
Previous Patent: DECODING DEVICE AND DECODING METHOD
Next Patent: LIQUID CRYSTAL MODULE AND ELECTRONIC DEVICE
Next Patent: LIQUID CRYSTAL MODULE AND ELECTRONIC DEVICE