|
For Full-Text PDF, please login, if you are a member of IEICE,
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
|
On the Minimum Weight of Simple Full-Length Array LDPC Codes
Kenji SUGIYAMA Yuichi KAJI
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E91-A
No.6
pp.1502-1508 Publication Date: 2008/06/01 Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e91-a.6.1502 Print ISSN: 0916-8508 Type of Manuscript: PAPER Category: Coding Theory Keyword: LDPC code, simple full-length array LDPC code, minimum weight, minimum distance,
Full Text: PDF>>
Summary:
We investigate the minimum weights of simple full-length array LDPC codes (SFA-LDPC codes). The SFA-LDPC codes are a subclass of LDPC codes, and constructed algebraically according to two integer parameters p and j. Mittelholzer and Yang et al. have studied the minimum weights of SFA-LDPC codes, but the exact minimum weights of the codes are not known except for some small p and j. In this paper, we show that the minimum weights of the SFA-LDPC codes with j=4 and j=5 are upper-bounded by 10 and 12, respectively, independent from the prime number p. By combining the results with Yang's lower-bound limits, we can conclude that the minimum weights of the SFA-LDPC codes with j=4 and p>7 are exactly 10 and those of the SFA-LDPC codes with j=5 are 10 or 12.
|
|