Rolf Johannesson

Sökresultat

• 2016

  Searching for binary and nonbinary block and convolutional LDPC codes

  Bocharova, I., Kudryashov, B. & Johannesson, R., 2016, I: IEEE Transactions on Information Theory. 62, 1, s. 163-183

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Block codes 100%
  • performance 49%
  • Convolutional codes 35%
  • Binary images 33%
  • coding 32%
• 2014

  A unified approach to optimization of LDPC codes for various communication scenarious

  Bocharova, I., Kudryashov, B. & Johannesson, R., 2014.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• LDPC Convolutional Codes versus QC LDPC Block Codes in Communication Standard Scenarios

  Bocharova, I., Kudryashov, B. & Johannesson, R., 2014.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review
• 2013

  Combinatorial Optimization for Improving QC LDPC codes performance

  Bocharova, I., Kudryashov, B. & Johannesson, R., 2013, IEEE International Symposium on Information Theory (ISIT). s. 2651-2655 5 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Block codes 100%
  • Combinatorial optimization 95%
  • Turbo codes 35%
  • Labeling 28%
  • Bit error rate 26%

• Near maximum-likelihood decoding of Generalized LDPC and Woven graph codes

  Bocharova, I., Kudryashov, B., Makarov, N. & Johannesson, R., 2013, IEEE International Symposium on Information Theory (ISIT). s. 3005-3009 5 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Maximum likelihood 100%
  • Decoding 89%
  • Communication 10%
• 2012

  A Closed Form Expression for the Exact Bit Error Probability for Viterbi Decoding of Convolutional Codes

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2012, I: IEEE Transactions on Information Theory. 58, 7, s. 4635-4644

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Convolutional codes 100%
  • Decoding 69%
  • Data storage equipment 33%
  • communication 14%
  • Communication 13%
  257 Nedladdningar (Pure)

• A Greedy Search for Improved QC LDPC Codes with Good Girth Profile and Degree Distribution

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2012, IEEE International Symposium on Information Theory Proceedings (ISIT), 2012. IEEE - Institute of Electrical and Electronics Engineers Inc., s. 3083-3087

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Block codes 100%
  • Bit error rate 26%
  175 Nedladdningar (Pure)

• Dual convolutional codes and the MacWilliams identities

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2012, I: Problems of Information Transmission. 48, 1, s. 21-30

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Convolutional codes 100%
  204 Nedladdningar (Pure)

• High-Rate QC LDPC Codes of Short and Moderate Length with Good Girth Profile

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2012, 7th International Symposium on Turbo Codes and Iterative Information Processing (ISTC), 2012. IEEE - Institute of Electrical and Electronics Engineers Inc., s. 150-154

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Decoding 100%
  201 Nedladdningar (Pure)

• Searching for voltage graph-based LDPC tailbiting codes with large girth

  Bocharova, I., Hug, F., Johannesson, R., Kudryashov, B. & Satyukov, R., 2012, I: IEEE Transactions on Information Theory. 58, 4, s. 2265-2279

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Block codes 100%
  • Electric potential 44%
  • Convolutional codes 21%
  248 Nedladdningar (Pure)
• 2011

  Another look at the exact bit error probability for Viterbi decoding of convolutional codes

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2011.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  Fil

  • Convolutional Codes 100%
  • Error Probability 78%
  • Decoding 76%
  • Encoder 30%
  • Generator 25%
  100 Nedladdningar (Pure)

• Double-Hamming based QC LDPC codes with large minimum distance

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2011, [Host publication title missing].

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Block codes 100%
  • Convolutional codes 70%
  • Labeling 28%
  172 Nedladdningar (Pure)

• LDPC codes with large girth based on voltage graphs

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2011.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet

• On the exact bit error probability for Viterbi decoding of convolutional codes

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2011.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  • Convolutional Codes 100%
  • Error Probability 78%
  • Decoding 76%
  • Encoder 37%
  • Generator 20%

• Some Voltage Graph-Based LDPC Tailbiting Codes with Large Girth

  Bocharova, I., Hug, F., Johannesson, R., Kudryashov, B. & Satyukov, R., 2011, [Host publication title missing].

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Block codes 100%
  • Electric potential 44%
  156 Nedladdningar (Pure)

• Woven convolutional graph codes with large free distances

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2011, I: Problems of Information Transmission. 47, 1, s. 1-14

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Convolutional codes 100%
  • Decoding 69%
  180 Nedladdningar (Pure)
• 2010

  A rate R=5/20 hypergraph-based woven convolutional code with free distance 120

  Hug, F., Bocharova, I., Johannesson, R. & Kudryashov, B., 2010, I: IEEE Transactions on Information Theory. 56, 4, s. 1618-1623

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Convolutional codes 100%
  169 Nedladdningar (Pure)

• New low-density parity-check codes with large girth based on hypergraphs

  Bocharova, I., Hug, F., Johannesson, R., Kudryashov, B. & Satyukov, R., 2010, [Host publication title missing]. 5 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Convolutional codes 100%
  250 Nedladdningar (Pure)

• On weight enumerators and MacWilliams identity for convolutional codes

  Bocharova, I., Hug, F., Johannesson, R. & Kudryashov, B., 2010, [Host publication title missing].

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • MacWilliams Identity 100%
  • Convolutional Codes 96%
  • Weight Enumerator 87%
  • Generator 12%
  • Dual Codes 11%

• Woven graph codes: asymptotic performances and examples

  Bocharova, I., Johannesson, R., Kudryashov, B. & Zyablov, V., 2010, I: IEEE Transactions on Information Theory. 56, 1, s. 121-129

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review
• 2009

  A lower bound on the minimum distance of chained Gallager codes

  Zyablov, V., Hug, F. & Johannesson, R., 2009.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet

• Chained Gallager codes

  Zyablov, V., Hug, F. & Johannesson, R., 2009.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  Fil
  73 Nedladdningar (Pure)

• Low-complexity error correction of Hamming-code-based LDPC codes

  Zyablov, V., Johannesson, R. & Loncar, M., 2009, I: Problems of Information Transmission. 45, 2, s. 95-109

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Block codes 100%
  • Error correction 91%

• Searching for high-rate convolutional codes via binary syndrome trellises

  Hug, F., Bocharova, I., Johannesson, R. & Kudryashov, B., 2009, [Host publication title missing]. s. 1358-1362

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  Fil

  • Convolutional codes 100%
  • Polynomials 31%
  156 Nedladdningar (Pure)
• 2008

  An improved bound on the list error probability and list distance properties

  Bocharova, I., Kudryashov, B., Johannesson, R. & Loncar, M., 2008, I: IEEE Transactions on Information Theory. 54, 1, s. 13-32

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  Fil

  • Decoding 100%
  • Additive noise 45%
  • Block codes 45%
  200 Nedladdningar (Pure)

• Asymptotic performance of woven graph codes

  Bocharova, I., Kudryashov, B., Johannesson, R. & Zyablov, V., 2008, [Host publication title missing]. s. 1025-1029

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Performance 100%
  • Graph in graph theory 77%
  • Convolutional Codes 60%
  • Block Codes 54%
  • Uniform Hypergraph 47%

• On the Asymptotic Performance of Low-Complexity Decoded LDPC Codes with Constituent Hamming Codes

  Zyablov, V., Loncar, M., Johannesson, R. & Rybin, P., 2008, 5th International Symposium on Turbo Codes and Related Topics. IEEE - Institute of Electrical and Electronics Engineers Inc.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Iterative decoding 100%
  • Block codes 44%
  • Decoding 32%

• On the Erasure-Correcting Capabilities of Low-Complexity Decoded LDPC Codes with Constituent Hamming Codes

  Zyablov, V., Loncar, M., Johannesson, R. & Rybin, P., 2008.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  • Block codes 100%
  • Decoding 73%

• On the Error-Correcting Capabilities of Low-Complexity Decoded LDPC Codes with Constituent Hamming Codes

  Zyablov, V., Loncar, M., Johannesson, R. & Rybin, P., 2008.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  • Iterative decoding 100%
  • Block codes 44%
  • Decoding 32%

• On the Expanding Properties of Gallager's LDPC Matrices

  Zyablov, V., Loncar, M. & Johannesson, R., 2008.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

  • Ensemble 100%
  • Bipartite Graph 92%
  • Expander 63%
  • Adjacency Matrix 51%
  • Parity 51%

• Soft-output BEAST decoding with application to product Codes

  Loncar, M., Johannesson, R., Bocharova, I. & Kudryashov, B., 2008, I: IEEE Transactions on Information Theory. 54, 3, s. 1036-1049

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Block codes 100%
  • Decoding 73%
  • Viterbi algorithm 37%
  • Computational complexity 23%
  • symbol 19%

• Woven graph codes over hypergraphs

  Bocharova, I., Johannesson, R., Kudryashov, B. & Zyablov, V. V., 2008.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review
• 2007

  A comparison of some trellis- and tree-based SISO algorithms for decoding and equalization

  Loncar, M., Johannesson, R., Bocharova, I. & Kudryashov, B., 2007, s. 1696-1700.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Asymptotically good woven codes with fixed constituent convolutional codes

  Bocharova, I., Kudryashov, B., Johannesson, R. & Zyablov, V., 2007.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Trellis complexity of short linear codes

  Bocharova, I., Johannesson, R. & Kudryashov, B., 2007, I: IEEE Transactions on Information Theory. 53, 1, s. 361-368

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • termination 100%
• 2006

  An improved bound on the list error probability and list distance properties

  Bocharova, I., Kudryashov, B., Johannesson, R. & Loncar, M., 2006, 2006 IEEE International Symposium on Information Theory. s. 719-723

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Covariance matrix 100%

• Interative BEAST-decoding of product codes

  Loncar, M., Johannesson, R., Bocharova, I. & Kudryashov, B., 2006.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• On suboptimum component decoding for product codes

  Loncar, M., Johannesson, R., Sayir, J., Bocharova, I. & Kudryashov, B., 2006, 2006 IEEE International Symposium on Information Theory. IEEE - Institute of Electrical and Electronics Engineers Inc., s. 2240-2244

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Decoding 100%
  • Iterative decoding 75%
  • Bit error rate 54%
  • Trajectories 40%

• Stumbling through a tree

  Johannesson, R., 2006.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Trellis complexity for short linear codes

  Bocharova, I., Kudryashov, B. & Johannesson, R., 2006.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review

• Unequal error protection for convolutional codes

  Pavlushkov, V., Johannesson, R. & Zyablov, VV., 2006, I: IEEE Transactions on Information Theory. 52, 2, s. 700-708

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Convolutional codes 100%
  • symbol 36%
  • Channel capacity 15%
  • communication 7%
  • Communication 6%
• 2005

  Achieving unequal error protection via woven codes: Construction and analysis

  Johannesson, R., Pavlushkov, V. & Zyablov, V., 2005, I: Information Processes (Electronic Scientific Journal). 5, 2, s. 132-158

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

• BEAST decoding - asymptotic complexity

  Bocharova, I., Johannesson, R. & Kudryashov, B., 2005, 2005 IEEE Information Theory Workshop.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Decoding 100%
  • Maximum likelihood 44%
  • Viterbi algorithm 30%
  • Block codes 27%

• BEAST decoding of block codes obtained via convolutional codes

  Bocharova, I., Handlery, M., Johannesson, R. & Kudryashov, B., 2005, I: IEEE Transactions on Information Theory. 51, 5, s. 1880-1891

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Convolutional codes 100%
  • Block codes 94%
  • Decoding 69%
  • Viterbi algorithm 35%
  • Maximum likelihood 25%

• Estimating the list size for BEAST-APP decoding

  Loncar, M., Johannesson, R., Bocharova, I. & Kudryashov, B., 2005, 2005 IEEE International Symposium on Information Theory (ISIT). IEEE - Institute of Electrical and Electronics Engineers Inc., s. 1126-1130

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Decoding 100%
  • Block codes 67%
  • Iterative decoding 37%

• Understanding Information Transmission

  Anderson, J. B. & Johannesson, R., 2005, John Wiley & Sons Inc. 320 s. (Understanding Technology Series)

  Forskningsoutput: Bok/rapport › Bok › Forskning

  • electrical engineering 100%
  • system theory 95%
  • coding 81%
  • innovation 59%
  • engineering 55%

• Unequal error protection explained by state-transition graphs

  Pavlushkov, V., Johannesson, R. & Zyablov, V., 2005, 2005 IEEE International Symposium on Information Theory (ISIT). IEEE - Institute of Electrical and Electronics Engineers Inc., s. 2236-2240

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Unequal Error Protection 100%
  • State Transition 68%
  • Burst 35%
  • Output 30%
  • Graph in graph theory 24%

• Woven constructions for multi-level information protection

  Johannesson, R., Pavlushkov, V. & Zyablov, V. V., 2005, I: Information Processes (Electronic Scientific Journal). 5, 2, s. 159-172

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review
• 2004

  A BEAST for prowling in trees

  Bocharova, I., Handlery, M., Johannesson, R. & Kudryashov, B., 2004, I: IEEE Transactions on Information Theory. 50, 6, s. 1295-1302

  Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

  • Convolutional codes 100%
  • Trellis codes 57%
  • Data storage equipment 24%

• An atypical approach to carrier modulation

  Massey, J. L., Massey, P. C. & Johannesson, R., 2004.

  Forskningsoutput: Konferensbidrag › Konferenspaper, ej i proceeding/ej förlagsutgivet › Peer review