IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES E88A(10) 2745-2761 2005年10月
In this paper, we explicitly formulate the average weight and the stopping set distributions and their asymptotic exponents of two-edge type LDPC code ensembles. We also show some characteristics such as the symmetry and the conditions for zero of...
T. Shibuya   K Harada   R Tohyama   K Sakaniwa   
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES E88A(5) 1346-1364 2005年5月
New decoding algorithms for binary linear codes based on the concave-convex procedure are presented. Numerical experiments show that the proposed decoding algorithms surpass Belief Propagation (BP) decoding in error performance. Average computatio...
Proceedings of the Eighth IASTED International Conference on Computers and Advanced Technology in Education 41-46 2005年 [査読有り]
We have been developing an interactive and realtime multimedia distance education system among multiple sites using IP (Internet protocol) -based satellite networks. Video, audio, telepointers, and other data must be efficiently shared among many ...
ITHET 2005: 6th International Conference on Information Technology Based Higher Education and Training, 2005 2005 C-13-C-18 2005年 [査読有り]
We have developed a prototype system for 3D video distance education using satellite communications and IP multicasting. Our system is based on personal computers and software codecs. The system is inexpensive and flexible for various configuratio...
Spatially coupled (SC) low-density parity-check (LDPC) codes are denned by bipartite graphs that are obtained by assembling prototype graphs. The combination and connection of prototype graphs are designated by specifying some parameters, and Kude...
2018 The International Symposium on Information Theory and Its Applications 2018年10月28日 Engineering Sciences Society, IEICE
conventional secret sharing, password protected secret sharing (PPSS) was invented. Recently, Nakahara et al. improved Ogata's multiple-use PPSS (mPPSS), which protects multiple data by one password, by employing secure computation known as CSEC70...
Japan-Singapore Workshop on Coding and Information Theory 2018年3月4日 School of Physical & Mathematical Sciences, Nanyang Technological University
In this talk, a group theoretic representation suitable for the
rank-modulation (RM) scheme over the multi-cell ranking developed by
En Gad et al. is presented. By introducing an action of the group of
all permutation matrices on the set of all pe...