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S.Hirasawa,
M.Kasahara, Y.Sugiyama, and T.Namekawa, "Fundamental studies on
cascaded channels," Proc. ICC '73, Seattle, U.S.A., June,1973.
S.Hirasawa, M.Kasahara, Y.Sugiyama, and T.Namekawa, "On parallel
communication channels in concatenation schemes," IEEE Inform. Theory
Group, Washington D.C. Chapter, U.S.A., Mar.1974.
Y.Sugiyama, M.Kasahara, S.Hirasawa, and T.Namekawa, "A method for
solving key equation for decoding Goppa codes," Inform. and Control,
vol.27, no.9, pp. 87-99, Jan.1975.
M.Kasahara, Y.Sugiyama, S.Hirasawa, and T.Namekawa, "New classes of
binary codes constructed on the basis of concatenated codes and product
codes," IEEE Trans. Inform. Theory, vol.IT-22, no.4, pp.462-468, July
1976.
S.Hirasawa, M.Kasahara, Y.Sugiyama, and T.Namekawa, "On the decoding
complexity for concatenated codes," 1979 Conf. Inform. Sci. and Sys.
Johnes Hopkins Univ. MD, U.S.A., Mar.1979.
S.Hirasawa, M.Kasahara, Y.Sugiyama, and T.Namekawa, "Certain
generalizations of concatenated codes--Exponential error bounds and decoding
complexity," IEEE Trans. Inform. Theory, vol.IT-25, no.5, pp.527-534,
Sept.1980.
S.Hirasawa, M.Kasahara, Y.Sugiyama, and T.Namekawa, "An improvement of
error exponents at low rates for the generalized version of concatenated
codes," IEEE Trans. Inform. Theory, vol.IT-27, no.3, pp.350-352, May
1981.
S.Hirasawa, M.Kasahara, Y.Sugiyama, and T.Namekawa, "Modified product
codes," IEEE Trans. Inform. Theory, vol.IT-30, no.2, pp.299-306,
Mar.1984.
S.Hirasawa, C.Fujiwara, and W.W.Chu, "An analysis on a truncated hybrid
decision feedback scheme," IEEE Proc. GLOBCOM. Atlanta. GA.
pp.1455-1459, Nov.1984.
S.Hirasawa, "On product codes and concatenated codes," (in
Japanese), Proc. IECE, vol.69, no.12, pp.1231-1239, Dec.1986.
S.Hirasawa, "Convolutional codes and their reliability functions,"
(in Japanese), Proc. 1987 Workshop on Coding Theory and its Applications,
Noda, Japan, July 1987.
T.Nishijima, H.Inazumi, and S.Hirasawa, "Iterated codes with improved
code rate," (in Japanese), Trans. IEICE, Fundamentals, vol.J71-A, no.3,
pp.833-844, Mar.1988.
S.Arimoto, and S.Hirasawa, "Invited paper: On channel coding and
reliability functions," (in Japanese) Trans. IEICE, Fundamentals, vol.
J73-A, no.2, pp.188-195, Feb.1990.
S.Hirasawa, and M.Kasahara, "Coding and decoding schemes with unequal
symbol reliability," Trans. IEICE, vol.E73, no.7, pp.1176-1180, July
1990.
S.Hirasawa, "A survey on concatenated codes," (in Japanese), IEICE
Tech. Rep. IT91-16, July 1991.
T.Kohnosu, T.Nishijima, and S.Hirasawa, "On a burst error correcting
algorithm for binary expanded Reed-Solomon codes," (in Japanese),
Trans. IEICE, vol.J76-A, no.4, pp.656-662, Apr.1993.
T.Kaneko, T.Nishijima, H.Inazumi, and S.Hirasawa, "An efficient
maximum-likelihood decoding algorithm for linear block codes with algebraic
decoder," IEEE Trans. Inform. Theory, vol.40, no.2 pp.320-327,
Mar.1994.
S.Hirasawa, and M.Kasahara, "Exponential error bounds for codes based
on Plotkin's construction," IEICE Tech. Rep. IT93-76, Dec.1993.
S.Hirasawa, T.Kohnosu, and T.Nishijima, "A fault tolerant system
configuration based on error correcting codes," Proc. 1994 IEEE Conf.
Sys. Man. Cybern. San Antonio. TX U.S.A. pp.2470-2475, June 1994.
T.Kohnosu, T.Nishijima, and S.Hirasawa, "Disk allocation methods for
Cartesian product files by using error-correcting codes," Proc. 1994
IEEE Conf. Sys. Man. Cybern. San Antonio. TX U.S.A. pp.1509-1514, June 1994.
T.Nishijima, T.Kohnosu, M.Nakazawa, and S.Hirasawa, "On application of
IC card a secure distribution system of software," Proc. 1994 IEEE
Conf. Sys. Man. Cybern. San Antonio. TX U.S.A. pp.2486-2491, June 1994.
A.Ogino, T.Kohnosu, T.Nishijima, and S.Hirasawa, "On a decoding
algorithm by superimposing method of binary cyclic codes for certain burst
error," (in Japanese), Trans, IEICE, vol.J78-A, no.6, pp.710-715, June
1995.
S. Hirasawa, "Coding techniques and information science" (in
Japanese), Proc, IEICE vol.79, no.7, pp.703-706, July 1996.
T.K.Matsushima, T.Matsushima, and S.Hirasawa, "Parallel encoder and
decoder architecture for cyclic codes," IEICE Trans. Fundamentals, vol.
E-79-A, no.9 pp.1313-1323, Sept. 1976.
T.Kohnosu, T.Nishijima, and S.Hirasawa, "On the minimum distance of
binary concatenated codes," IEICE Trans, Fundamentals, vol. E80-A,
no.5, pp.922 - 923, May 1997.
T.Kaneko, T.Nishijima, and S.Hirasawa, "An improvement of soft-decision
maximum -likelyhood decoding algorithm using hard-decision bound distance
decoder," IEEE Trans. Inform. Theory, vol.43, no.4, pp.1314-1319, July
1997.
M.Kobayashi, T.Matsushima, and S.Hirasawa, "On complexity of decoding
beyond the BCH bound using Berlekamp - Massey algorithm," (in Japanese)
IEICE Trans. Fundamentals, vol.J80-A, no.9, pp.1554-1558, Sept. 1997.
T.Kohnosu, T.Nishijima, and S.Hirasawa, "On the minimum distance of
concatenated codes and decoding method up to the minimum distance,"
IEICE Trans, Fundamentals, vol.E80-A, no.11, pp.2111-2116, Nov. 1997.
M.Kobayashi, T.Matsushima, and S.Hirasawa, "On decoding methods beyond
the BCH bound and their application to soft - decision decoding," (in
Japanese), IEICE Trans. Fundamentals, vol.J81-A, no.4, pp.751-762, Apr.
1998.
T.K.Matsushima, T.Matsushima, and S.Hirasawa, "Parallel architecture
for generalized LFSR in LSI built-in self testing," IEICE Trans.
Fundamentals, vol. E81-A, no.6 pp.1252-1261, June 1998.
M.Gotoh, T.Matsushima, and S.Hirasawa, "A Generalization of B. S. Clark
and A. R. Barron's asymptotic of Bayes codes for FSMX sources," IEICE
Trans. Fundamentals, vol. E81-A, no.10, pp.2123-2132, Oct. 1998.
S.Hirasawa, "Gaps between theory and applications (in Japanese), Proc,
IEICE,
vol.81, no.10, pp.1011-1014, Oct. 1998.
M.Kobayashi, T.Matsushima, and S.Hirasawa, "Iterative soft-decision
decoding using an update algorithm of error locator polynomial for BCH
codes," Proc. of Int. Symp. Infrom. Theory and its Appl., pp.90-93,
Mexico City, Mexico, Oct. 1998.
M.Kobayashi, T.Matsushima, and S.Hirasawa, "Soft-decision decoding
using decoding method beyond the BCH bound for binary BCH codes," (in
Japanese), IEICE Trans. Fundamentals, vol.J82-A, no.4, pp.539-549, Apr.
1999.
M.Kimura, M.Gotoh, T.Matsushima, and S.Hirasawa, "A note on variable to
fixed-length codes without error propagation for Markov sources, (in
Japanese), IEICE Trans. Fundamentals, vol.J82-A, no.2, pp.736-741, May 1999.
M.Gotoh, T.Matsushima, and S.Hirasawa, "A study on defference of
codelengths between codes based on MDL principle and Bayes codes for given
prior distributions," (in Japanese), IEICE Trans. Fundamentals,
vol.J82-A, no.5, pp.698-707, May 1999.
T.Niinomi, T.Matsushima, and S.Hirasawa, "A decision feedback scheme
using list decoding for tree codes," (in Japanese), IEICE Trans.
Fundamentals, vol.J83-A, no.1, pp.67-82, Jan. 2000.
M.Gotoh, T.Matsushima, and S.Hirasawa, "Asymptotic normality of
extended posyerior density functions," (in Japanese), IEICE Trans.
Fundamentals, vol.J83-A, no.6, pp.639-650, June 2000.
S.Hirasawa, "C. E. Shannon--Information Theory," (in Japanese),
Management Systems, JIMA, vol.11, no.2, pp.83-86, Feb. 2001.
T.Okada, M.Kobayashi, and S.Hirasawa, "An efficient heuristic search
method for maximum likelihood decoding of linear block codes using dual
codes," IEICE Trans. Fundamentals, vol.E85-A, no.2, pp.485-489, Feb.
2002.
T.Ishida, M.Gotoh, and S.Hirasawa, "On universality of both Bayes codes
and Ziv-Lempel codes for source which emit data sequence by block
unit," (in Japanese), IEICE Trans. Fundamentals, vol.J84-A, no.9,
pp.1167-1178, Sept. 2001.
M.Goto, T.Matsushima and S.Hirasawa, "A source model with probability
distribution over word set and recurrence time theorem," IEICE Trance.
Fundamentals, Vol.E86-A, No.10, pp.2517-2525, Oct. 2003.
H.Yagi, M.Kobayashi and S.Hirasawa, "Complexity reduction of the
Gazelle and Snyders decoding algorithm for maximum likelihood
decoding," IEICE Trance. Fundamentals, Vol.E86-A, No.10, pp.2461-2472,
Oct. 2003.
T.Niinomi, T.Matsushima, and S.Hirasawa, "A new decoding algorithm
using likelihood ratio for tree codes," (in Japanese), IEICE Trans.
Fundamentals, vol.J87-A, no.4, pp.224-233, Feb. 2004.
H.Yagi, M.Kobayashi, T.Matsushima, and S.Hirasawa, "An improved method
of reliability-based maximum likelihood decoding algorithm using an order
relation among binary vectors," IEICE Trans. Fundamentals, vol.E87-A,
no.10, pp.2493-2502, Oct. 2004.
S.Hirasawa and M.Kasahara, "Exponential error bounds for block
concatenated codes with tail biting trellis inner codes," Proc. of
ISITA 2004, pp.156-161, Parma, Italy, Oct. 2004.
H. Yagi, T. Matsushima, and S. Hirasawa, "Efficient reliability-baced
soft decision decoding algorithm over Markov modulated channel," Proc.
of ISITA 2004, pp.823-826, Parma, Italy, Oct. 2004.
G.Hosoya, H.Yagi, and S.Hirasawa, "Modification methods for
construction and performance analysis of low-density parity check-check
codes over Markov-modulated channels," Proc. of ISITA 2004, pp.206-611,
Parma, Italy, Oct. 2004.
S.Hirasawa, and M.Kasahara, "Exponential error bounds and decoding
complexity for block concatenated codes with tail biting trellis inner
codes," to appear in The Journal of Discrete Mathematical Science and
Cryptography.
H.Yagi, T.Matsushima, and S.Hirasawa, "A heuristic search method with the reduced list of test error patterns for maximum likelihood decoding," IEICE Trans. Fundamentals, vol.E88-A, no.10, pp.2721-2732, Oct. 2005.
N.Ogasawara, M.Kobayashi, and S.Hirasawa, "The construction of
periodically time-invariant convollutional codes using binary linear block
codes," (in Japanese), to appear in IEICE Fundamentals.
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