Thomas Mittelholzer  Thomas Mittelholzer photo       

contact information

Research staff member
Zurich Research Laboratory, Zurich, Switzerland
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Professional Associations

Professional Associations:  IEEE Information Theory Society  |  IEEE, Senior Member


2011


IBM Scientists Demonstrate Memory Breakthrough Drift-tolerant Multilevel Phase-Change Memory
N Papandreou, H Pozidis, T Mittelholzer, GF Close, M Breitwisch, C Lam, E Eleftheriou
Database and Network Journal 41(4), 8, 2011

Drift-tolerant multilevel phase-change memory
N. Papandreou, H. Pozidis, T. Mittelholzer, G. Close, M. Breitwisch, C. Lam, E. Eleftheriou
IEEE International Memory Workshop (IMW), 2011


2010

Superposition coding in rewritable channels
LA Lastras-Montano, T Mittelholzer, M Franceschini
Information Theory and Applications workshop (ITA2010), pp. 1--9


Rewritable storage channels with limited number of rewrite iterations
Thomas Mittelholzer, Luis Alfonso Lastras-Monta\~no, Mayank Sharma, Michele Franceschini
Information Theory Proceedings (ISIT), 2010 IEEE International Symposium on, pp. 973--977


2009

On the lifetime of multilevel memories
LA Lastras-Montano, M Franceschini, T Mittelholzer, J Karidis, M Wegman
Information Theory, 2009, pp. 1224--1228


Enumerative maximum-transition-run codes
T Mittelholzer
Information Theory, 2009, pp. 1549--1553

Rewritable channels with data-dependent noise
T Mittelholzer, M Franceschini, L A Lastras-Monta{~n}o, I M Elfadel, M Sharma
Communications, 2009, pp. 1--6


2008


Rewritable storage channels
L.A. Lastras-Montano, M. Franceschini, T. Mittelholzer, M. Sharma
IEEE International Symposium on Information Theory and its Applications, pp. 1--6, 2008

Scaling tape-recording areal densities to 100 Gb/in2
AJ Argumedo, D Berman, RG Biskeborn, G Cherubini, RD Cideciyan, E Eleftheriou, W Haeberle, others
IBM Journal of Research and Development 52(4.5), 513-527, 2008


2007

Enumerative encoding with non-uniform modulation constraints
Mario Blaum, Roy D Cideciyan, Evangelos Eleftheriou, R Galbraith, K Lakovic, Thomas Mittelholzer, Travis Oenning, B Wilson
IEEE International Symposium on Information Theory "ISIT 2007", pp. 1831-1835

High-rate modulation codes for reverse concatenation
M Blaum, R D Cideciyan, E Eleftheriou, R Galbraith, K Lakovic, T Mittelholzer, T Oenning, B Wilson
IEEE Transactions on Magnetics 43(2), 740-743, IEEE, 2007


2004


Capacity-approaching codes: Can they be applied to the magnetic recording channel?
A Dholakia, E Eleftheriou, T Mittelholzer, M P C Fossorier
IEEE Communications Magazine 42(2), 122-130, 2004


2003

A Sorting-Based Approximation of the Sum-Product Algorithm
X Y Hu, T Mittelholzer
Revista da Sociedade Brasileira de Telecomunicacoes, Junho de 2003 18(1)



2002





2001

Linear Codes and Their Duals over Artinian Rings
T. Mittelholzer
Codes, Systems, and Graphical Models, Eds. B. Marcus and J. Rosenthal. The IMA Volumes in Mathematics and its Applications, pp. 361-379, Springer, 2001




2000

On Iterative Decoding for Magnetic Recording Channels
A. Dholakia, E. Eleftheriou, and T. Mittelholzer
Proc. of the 2nd Intern. Symp. on Turbo Codes & Related Topics, Brest, France, 4-7 Sep., 2000, pp. 219-226

Iterative Detection/Decoding Techniques for the Magnetic Recording Channel
A. Dholakia, E. Eleftheriou, and T. Mittelholzer
Digests of the Magnetic Recording Conference, TMRC 2000, Aug. 14-16, 2000, Santa Clara, CA, USA, pp. D6

Subcode graphs of linear block codes
T Mittelholzer
Information Theory, 2000, pp. 116

Construction of Steiner systems and high-rate low-density parity-check codes
T Mittelholzer
IBM Research Report, 2000



1997

Hard-Decision-Aided Turbo Decoding
X. Lin, J.L. Massey, T. Mittelholzer, B. Rimoldi
Proc. of the Intern. Symp. on Turbo Codes & Related Topics, Brest, France, 3-5 Sep, 1997, pp. 235-238

Multilevel Turbo Codes for M-ary Quadrature and Amplitude Modulation
T. Mittelholzer, X. Lin, J.L. Massey
Proc. of the Intern. Symp. on Turbo Codes & Related Topics, Brest, France, 3-5 Sep, 1997, pp. 127-134

Convolutional Codes over Rings and the Two Chain Conditions
T. Mittelholzer
Proc. IEEE Int. Symp. on Information Th., Ulm, Germany, June 29-July 4, 1997, pp. 285


1996

Minimal-Trellis Decoding Versus Permutation Decoding of Permutation Modulation Codes
T. Mittelholzer
Proc. of the 1st INTAS Intern. Seminar on Coding Th. and Combinatorics, Thahkadzor, Armenia, Oct 6-11, 1996, pp. 116-121

Fast Maximum-Likelihood Decoding of Group Codes from Finite Reflection Groups
T. Mittelholzer
Abstract of Papers of the Math. Research Inst., Oberwolfach, Germany, 18-24 February, 1996

Convolutional Codes over Groups
H.-A. Loeliger and T. Mittelholzer
Special Issue on "Codes and Complexity" of the IEEE Trans. on Information Theory42, 1660-1686, 1996

Group Codes Generated by Finite Reflection Groups
T. Mittelholzer and J. Lahtonen
IEEE Trans. on Information Theory 42(2), 519-528, 1996


1995

Convolutional Codes over Groups: A Pragmatic Approach
T. Mittelholzer
Proc. of 33rd Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, October 4-6, 1995, pp. 380-381

Minimality Tests for Rational Encoders over Rings
T. Mittelholzer
Proc. IEEE Int. Symp. on Information Th., Whistler, B.C. Canada, 17-22 Sep, 1995, pp. 305

Finite truncation depth trellis codes for the dicode channel
T Mittelholzer, P A McEwen, S A Altekar, J K Wolf
Magnetics, IEEE Transactions on 31(6), 3027--3029, IEEE, 1995


1994

Decomposition and Construction of Group Codes
T. Mittelholzer
Proc. IEEE Int. Symp. on Information Th., Trondheim, Norway, June 27-July 1, 1994

Minimality and Observability of Group Systems
H.-A. Loeliger, G.D. Forney, Jr., T. Mittelholzer, M.D. Trott
Linear Algebra & Appl.205-206, 937-963, 1994

Construction and Decoding of Optimal Group Codes from Finite Reflection Groups
T. Mittelholzer
Communications and Cryptography: Two Sides of One Tapestry, Eds. R.E. Blahut, D.J. Costello, Jr., U. Maurer, T. Mittelholzer, pp. 297-306, Kluwer, 1994

Communications and Cryptography: Two Sides of One Tapestry
R.E. Blahut, D.J. Costello, Jr., U. Maurer, T. Mittelholzer (eds.)
Kluwer, 1994


1993

On Minimality Conditions for Linear Systems and Convolutional Codes
T. Mittelholzer and H.-A. Loeliger
Proc. IEEE Int. Symp. on Information Th., San Antonio, USA, Jan 17-22, 1993, pp. 182

Minimal Encoders for Convolutional Codes over Rings
T. Mittelholzer
Communications Theory and Applications, Eds. B. Honary, M. Darnell and P.G. Farrell, pp. 30 - 36, HW Comm. Ldt., 1993

Welch's Bound and Sequence Sets for Code-Division Multiple-Access Systems
J.L. Massey and T. Mittelholzer
Sequences II (1991: Positano, Italy), Eds. R. Capocelli, A. De Santis and U. Vaccaro, pp. 63-78, Springer, 1993


1992

Convolutional Codes over Groups: Facts and Hopes
H.-A. Loeliger and T. Mittelholzer
Abstracts of papers IEEE Information Th. Workshop, San Salvador, Brazil, June 21-26, 1992, pp. 30

Convolutional Codes over Groups
T. Mittelholzer
Abstracts of papers Workshop on Information Th., Oberwolfach, Germany, April 5-11, 1992, pp. 10


1991

Minimality Criteria for Convolutional Encoders
T. Mittelholzer
Abstracts of papers Workshop on Coding and Information Th., Essen, Germany, Dec 16-17, 1991, pp. 22

Linear Codes over Groups and New Slepian-Type Signal Sets
H.-A. Loeliger and T. Mittelholzer
Proc. IEEE Int. Symp. on Information Th., Budapest, Hungary, June 24-28, 1991


1990

Systematicity and Rotational Invariance of Convolutional Codes over Rings
J.L. Massey and T. Mittelholzer
roc. 2nd Int. Workshop on Algebraic and Combinatorial Coding Th., Leningrad, Sep 16-22, 1990, pp. 154-158

Convolutional Codes over Rings
T. Mittelholzer and J.L. Massey
Book of abstracts U.R.S.I., General Assembly, Prag, Czechoslovakia, 28 Aug-5 Sep, 1990, pp. 428

Ring Convolutional Codes for Phase Modulation
J.L. Massey, T. Mittelholzer, T. Riedel and M. Vollenweider
Proc. IEEE Int. Symp. on Information Th., San Diego, USA, Jan 1990, pp. 176

Convolutional Codes and Cohomological Invariants
T. Mittelholzer and J.L. Massey
Abstracts of papers Workshop on Applications of Algebraic Geometry, Jan 8-12, 1990, Univ. of Puerto Rico, Puerto Rico.


1989

Convolutional Codes over Rings
J.L. Massey and T. Mittelholzer
Proc. of Fourth Joint Swedish-USSR Int. Workshop on Information Th., 27 Aug-1 Sep, 1989, Gotland, Sweden, pp. 14-18




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