RWTH Aachen
University
Institute for Communication
Systems and Data Processing
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GfK e.V.
RWTH Aachen University
Marc Adrat
Dr.-Ing. Marc Adrat (2005)
Visiting Lecturer
Current Employer:
Fraunhofer-Institut für Kommunikation, Informationsverarbeitung und Ergonomie (FKIE), Wachtberg
E-mail:
Teaching
Lecture:
Channel Coding and Modulation
Publications
Schmalen, L.
,
Adrat, M.
,
Clevorn, T.
, and
Vary, P.
:
EXIT Chart Based System Design for Iterative Source-Channel Decoding with Fixed-Length Codes
,
in:
IEEE Transactions on Communications
, vol. 59, no. 9, Sept. 2011, pp. 2406–2413,
ISSN
: 0090-6778,
DOI
:
10.1109/TCOMM.2011.062311.090019
.
Schmalen, L.
,
Vary, P.
,
Clevorn, T.
, and
Adrat, M.
:
Turbo Source Compression with Jointly Optimized Inner Irregular and Outer Irregular Codes
,
in:
Proceedings of IEEE Vehicular Technology Conference (VTC-Fall)
, (Ottawa, Canada, 6.-9.9.2010), Sept. 2010,
ISBN
: 978-1-42443-573-9,
DOI
:
10.1109/VETECF.2010.5594217
.
Clevorn, T.
,
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
Hybrid ARQ with Incremental Redundant Index Assignments for Iterative Source-Channel Decoding
,
in:
Proceedings of IEEE International Conference on Communications (ICC)
, (Cape Town, South Africa), May 2010.
Adrat, M.
, Antweiler, M.,
Schmalen, L.
,
Vary, P.
, and
Clevorn, T.
:
On the Overshooting Effect in EXIT Charts of Iterative Source-Channel Decoding
,
in:
Proceedings of IEEE International Conference on Communications (ICC)
, (Cape Town, South Africa), May 2010.
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
Reduced-Search Source Decoders for Iterative Source-Channel Decoding
,
in:
ITG-Fachtagung Sprachkommunikation
, (Aachen, Germany), VDE Verlag GmbH, Oct. 2008,
ISBN
: 978-3-80073-120-6.
Clevorn, T.
,
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
Iterative Source-Channel Decoding: Design of Redundant Index Assignments
,
in:
ITG-Fachtagung Sprachkommunikation
, (Aachen), VDE Verlag GmbH, Oct. 2008,
ISBN
: 978-3-80073-120-6.
Schmalen, L.
,
Vary, P.
,
Adrat, M.
, and
Clevorn, T.
:
Complexity-Reduced Iterative Source-Channel Decoding by Conditional Quantization
,
in:
Proceedings of International Symposium on Turbo Codes & Related Topics
, (Lausanne, CH), Sept. 2008, pp. 327–332,
ISBN
: 978-1-42442-862-5.
Clevorn, T.
,
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
On Redundant Index Assignments for Iterative Source-Channel Decoding
,
in:
IEEE Communications Letters
, vol. 12, no. 7, July 2008, pp. 514–516,
ISSN
: 1089-7798.
Adrat, M.
,
Clevorn, T.
, and
Schmalen, L.
:
Iterative Source-Channel Decoding & Turbo DeCodulation
,
in:
Advances in Digital Speech Transmission
, ed. by
Martin, R.
, Heute, U., and
Antweiler, C.
, Chichester, UK: John Wiley & Sons, Ltd., Jan. 2008, ch. 13, pp. 365–398,
ISBN
: 978-0-47051-739-0.
Schmalen, L.
,
Vary, P.
,
Adrat, M.
, and
Clevorn, T.
:
On the EXIT Characteristics of Feed Forward Convolutional Codes
,
in:
Proceedings of IEEE International Symposium on Information Theory (ISIT)
, (Nice, France), June 2007, pp. 2686–2690.
Adrat, M.
,
Clevorn, T.
, Brauers, J., and
Vary, P.
:
Minimum Terms of Residual Redundancy for Successful Iterative Source-Channel Decoding
,
in:
IEEE Communications Letters
, vol. 10, no. 11, Nov. 2006, pp. 778–780.
Clevorn, T.
,
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
On the Optimum Performance Theoretically Attainable for Scalarly Quantized Correlated Sources
,
in:
Proceedings of International Symposium on Information Theory and its Applications (ISITA)
, (Seoul, Korea), Oct. 2006.
Clevorn, T.
,
Vary, P.
, and
Adrat, M.
:
Iterative Source-Channel Decoding Using Short Block Codes
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Toulouse, France), vol. IV, May 2006, pp. 221–224.
Clevorn, T.
,
Adrat, M.
, and
Vary, P.
:
Turbo DeCodulation using Highly Redundant Index Assignments and Multi-Dimensional Mappings
,
in:
Proceedings of International Symposium on Turbo Codes & Related Topics
, (Munich, Germany), Apr. 2006.
Adrat, M.
, Antweiler, M.,
Clevorn, T.
, Korall, B., and
Vary, P.
:
EXIT-Optimized Quantizer Design for Iterative Source-Channel Decoding
,
in:
Proceedings of International Symposium on Turbo Codes & Related Topics
, (Munich, Germany), Apr. 2006.
Clevorn, T.
,
Vary, P.
, and
Adrat, M.
:
Iterative Source-Channel Decoding using Short Block Codes
,
in:
ITG-Fachtagung Sprachkommunikation
, (Kiel, Germany), Apr. 2006.
Clevorn, T.
,
Schotsch, B.
,
Schmalen, L.
,
Vary, P.
, and
Adrat, M.
:
Separation of Recursive Convolutional Codes into Sub-Codes using Galois Field Arithmetic
,
in:
Proceedings of Conference on Information Sciences and Systems (CISS)
, (Princeton, NJ, USA), Mar. 2006.
Clevorn, T.
,
Vary, P.
, and
Adrat, M.
:
Parameter SNR Optimized Index Assignments and Quantizers based on First Order A Priori Knowledge for Iterative Source-Channel Decoding
,
in:
Proceedings of Conference on Information Sciences and Systems (CISS)
, (Princeton, NJ, USA), Mar. 2006, pp. 1429–1434.
Clevorn, T.
, Brauers, J.,
Adrat, M.
, and
Vary, P.
:
Turbo Decodulation: Iterative Combined Demodulation and Source-Channel Decoding
,
in:
IEEE Communications Letters
, vol. 9, no. 9, Sept. 2005, pp. 820–822.
Clevorn, T.
, Brauers, J.,
Adrat, M.
, and
Vary, P.
:
EXIT Chart Analysis of Turbo Decodulation
,
in:
Proceedings of IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
, (Berlin, Germany), vol. 2, Sept. 2005, pp. 711–715.
Brüggen, T.
,
Adrat, M.
, and
Vary, P.
:
BPSK Modulation with Unequal Power Allocation Considering A Priori Knowledge
,
in:
Proceedings of IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
, (Berlin, Germany), vol. 2, Sept. 2005, pp. 1071–1075.
Adrat, M.
, Brauers, J.,
Clevorn, T.
, and
Vary, P.
:
The EXIT-Characteristic of Softbit-Source Decoders
,
in:
IEEE Communications Letters
, vol. 9, no. 6, June 2005, pp. 540–542.
Adrat, M.
,
Vary, P.
, and
Clevorn, T.
:
Optimized Bit Rate Allocation for Iterative Source-Channel Decoding and its Extension towards Multi-Mode Transmission
,
in:
Proceedings of IST Mobile and Wireless Communications Summit
, (Dresden, Germany, 0.-0.6.2005), June 2005.
Schmalen, L.
and
Adrat, M.
:
An Iterative, Turbo-like Approach to Convolutional Decoding
,
in:
Proceedings of International Student Conference on Electrical Engineering (POSTER)
, (Prague, Czech Republic), May 2005.
Adrat, M.
and
Vary, P.
:
Iterative Source-Channel Decoding: Improved System Design Using EXIT Charts
,
in:
EURASIP Journal on Applied Signal Processing
, vol. 2005, no. 6, May 2005, pp. 928–941.
– Special Issue on Turbo Processing –.
Clevorn, T.
and
Adrat, M.
:
TURBO-DeCodulation: Iterative Combined Demodulation and Source-Channel Decoding
,
in:
Sitzung der ITG-Fachgruppe "Angewandte Informationstheorie"
, (Aachen, Germany), Apr. 2005.
Adrat, M.
and
Clevorn, T.
:
TURBO-DeCodulation: Gemeinsame Optimierung der Quellen- und Kanaldecodierungs-Komponenten mittels EXIT-Chart Analyse
,
in:
Sitzung der ITG-Fachgruppe "Angewandte Informationstheorie"
, (Aachen, Germany), Apr. 2005.
(in German)
Adrat, M.
and
Vary, P.
:
Iterative Source-Channel Decoding with Code Rates near r = 1
,
in:
Proceedings of IEEE International Conference on Communications (ICC)
, (Paris, France), vol. 2, June 2004, pp. 877–880.
Adrat, M.
, Picard, J., and
Vary, P.
:
Efficient Near-Optimum Softbit Source Decoding for Sources with Inter- and Intra-Frame Redundancy
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Montreal, Canada), vol. 4, May 2004, pp. 653–656.
Clevorn, T.
,
Adrat, M.
, and
Vary, P.
:
Iterative Source Coded Modulation: Turbo Error Concealment by Iterative Demodulation
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Montreal, Canada), vol. 4, May 2004, pp. 649–652.
Adrat, M.
and
Vary, P.
:
TURBO Error Concealment of Mutually Independent Source Codec Parameters
,
in:
Proceedings of International ITG Conference on Source and Channel Coding (ITGSCC)
, (Erlangen, Germany), Jan. 2004, pp. 287–294.
Adrat, M.
:
Iterative Source-Channel Decoding for Digital Mobile Communications
,
Dissertation, no. 16 in Aachener Beiträge zu Digitalen Nachrichtensystemen (ABDN) ed. by
Vary, P.
, Aachen, Germany: Verlag Mainz, July 2003,
ISBN
: 3-860-73835-6.
Adrat, M.
, von Agris, U., and
Vary, P.
:
Convergence Behavior of Iterative Source-Channel Decoding
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Hong Kong, China), vol. 4, Apr. 2003, pp. 269–272.
Adrat, M.
, Haenel, R., and
Vary, P.
:
On Joint Source-Channel Decoding for Correlated Sources
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Orlando, Florida, USA), vol. 3, May 2002, pp. 2505–2508.
Adrat, M.
, Picard, J., and
Vary, P.
:
Analysis of Extrinsic Information from Softbit-Source Decoding Applicable to Iterative Source-Channel Decoding
,
in:
Proceedings of International ITG Conference on Source and Channel Coding (ITGSCC)
, (Berlin, Germany), Jan. 2002.
Adrat, M.
, Picard, J., and
Vary, P.
:
Softbit-Source Decoding Based on the Turbo-Principle
,
in:
Proceedings of IEEE Vehicular Technology Conference (VTC-Fall)
, (Atlantic City, NJ, USA), vol. 4, Oct. 2001, pp. 2252–2256.
Adrat, M.
, Picard, J., and
Vary, P.
:
Analysis of Extrinsic Information from Softbit-Source Decoding Applicable in Iterative Source-Channel Decoders
,
in:
Proceedings of Aachen Symposium on Signal Theory
, (Aachen, Germany), Sept. 2001, pp. 349–354.
Adrat, M.
,
Vary, P.
, and Spittka, J.:
Iterative Source-Channel Decoder Using Extrinsic Information From Softbit-Source Decoding
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Salt Lake City, Utah, USA), vol. 4, May 2001, pp. 2653–2656.
Xu, W.,
Heinen, S.
,
Adrat, M.
,
Vary, P.
, Hindelang, T., Schmautz, M., and Hagenauer, J.:
An Adaptive Multirate (AMR) Codec Proposed for
GSM
Speech Transmission
,
in:
International Journal of Electronics and Communications (AEÜ)
, vol. 54, no. 6, Dec. 2000.
Jax, P.
,
Martin, R.
,
Vary, P.
,
Adrat, M.
, Varga, I., Frank, W., and Ihle, M.:
A Noise Suppression System for the AMR Speech Codec
,
in:
ITG-Fachtagung Konvens 2000 / Sprachkommunikation
, (Ilmenau, Germany), Oct. 2000, pp. 43–46.
Adrat, M.
, Spittka, J.,
Heinen, S.
, and
Vary, P.
:
Error Concealment by Near Optimum MMSE-Estimation of Source Codec Parameters
,
in:
Proceedings of IEEE Workshop on Speech Coding (SCW)
, (Delavan, Wisconsin, USA), Sept. 2000, pp. 84–86.
Heinen, S.
,
Adrat, M.
,
Vary, P.
, and Xu, W.:
Softbit Speech Decoding with Re-Quantization
,
in:
Proceedings of International ITG Conference on Source and Channel Coding (ITGSCC)
, (Munich, Germany), Jan. 2000, pp. 187–192.
Xu, W.,
Heinen, S.
,
Adrat, M.
,
Vary, P.
, Hindelang, T., Schmautz, M., and Hagenauer, J.:
An Adaptive Multirate Speech Codec Proposed for the
GSM
,
in:
Proceedings of International ITG Conference on Source and Channel Coding (ITGSCC)
, (Munich, Germany), Jan. 2000, pp. 51–56.
Heinen, S.
,
Adrat, M.
,
Steil, O.
,
Vary, P.
, and Xu, W.:
A 6.1 to 13.3-kb/s Variable Rate CELP Codec (VR-CELP) for AMR Speech Coding
,
in:
Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, (Phoenix, AZ, USA), vol. 1, Mar. 1999, pp. 9–12.