Tom Høholdt

Tom Høholdt

Professor emeritus

Building: 303 B, 150

Denmark

Direct phone: 45253047

 A modern digital system of communication uses advanced mathematics in a great number of ways. When information is stored or transmitted one can not be sure that the data one receives or reads is the same as the transmitted or stored. If A wants to transmit information to B this is first represented as efficient as possible and then a codeword is created by adding extra symbols. This proces is called encoding. The word treceived by B is changed by noise in the communication channel but using the extra symbols it is often, or at least with high probability, possible to recover the sent word. This proces is called decoding. When constructing codes one wants 1) the codes should have a ( mathematical) structure such that the en- and decoding algorithms have low complexity and 2) The code should be able to correct the maximal number of errors using a minimum number of redundant symbols. The mathematical problems that arises in connection with constrution and use of error-correcting codes can be attacjed using algebraic, geometric and combinatorial methods and even if the questions one wants to answer have a technical source it leads to a long series of important and intersting mathematical problems.
The coding group at DTU has for many years contributed significantly to the solution of this kind of problems.
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  • I E E E Transactions on Information Theory

    ISSNs: 0018-9448

    ISSNs (Electronic): 1557-9654

    I E E E, United States

    BFI (2015): BFI-level 2, ISI indexed (2013): ISI indexed yes

    Central database

    Journal

  • Designs, Codes and Cryptography

    ISSNs: 0925-1022

    ISSNs (Electronic): 1573-7586

    Springer New York LLC, United States

    BFI (2015): BFI-level 1, ISI indexed (2013): ISI indexed yes

    Central database

    Journal

  • Lecture Notes in Computer Science

    ISSNs: 0302-9743, 0302-9743, 03029743

    ISSNs (Electronic): 1611-3349

    Springer, Germany

    BFI (2015): BFI-level 1, ISI indexed (2013): ISI indexed no

    Central database

    Journal: Book series

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(21)

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  • World Scientific Publishing Co Pte Ltd, 981-02, 981-277, 981-238, 981-283, 9971-978, 9971-966, 981-281, 981-256, 981-279, 981-4139, 9971-950

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  • IEEE, 0-7803, 1-4244

    Central database

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  • Springer, 0-387, 1-85233, 0-8176, 1-84628

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