Rolf Johannesson

Search results

• 2013

  Combinatorial Optimization for Improving QC LDPC codes performance

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Optimization 100%
  • Codes 100%
  • Block Code 100%
  • Parity Check Matrix 100%
  • Code Performance 100%

• 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). p. 3005-3009 5 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Codes 100%
  • Performance 50%
  • Coding 12%
  • Mobile Communication 12%
• 2012

  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., p. 3083-3087

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Codes 100%
  • Block Code 100%
  • Degree Distribution 100%
  • Code Rate 50%
  • Quasicyclic 33%
  205 Downloads (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., p. 150-154

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • High Rate 100%
  • Codes 100%
  • Performance 14%
  • Simulation Result 14%
  239 Downloads (Pure)
• 2011

  Double-Hamming based QC LDPC codes with large minimum distance

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Quasicyclic 100%
  • Base 100%
  • Matrix (Mathematics) 50%
  • Parent 50%
  • Hamming Code 25%
  201 Downloads (Pure)

• 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].

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Codes 100%
  • Voltage 100%
  • Low Density 100%
  • Parity 100%
  • Quasicyclic 75%
  176 Downloads (Pure)
• 2010

  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 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Parity 100%
  275 Downloads (Pure)

• On weight enumerators and MacWilliams identity for convolutional codes

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Weight Enumerator 100%
  • Dual Code 11%
• 2009

  Searching for high-rate convolutional codes via binary syndrome trellises

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • High Rate 100%
  • Free Distance 20%
  • Distance Property 20%
  218 Downloads (Pure)
• 2008

  Asymptotic performance of woven graph codes

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Bounds 100%
  • Asymptotics 100%
  • Hypergraphs 100%

• 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.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Performance 100%
  • Codes 100%
  • Error 16%
  • Numerical Example 16%
  • Hard Decision 16%
• 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. p. 719-723

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Probability Theory 100%
  • Bounds 100%
  • Upper Bound 25%
  • Eigenvalue 25%

• 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., p. 2240-2244

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Performance 100%
  • Decoding 100%
  • Product Code 100%
  • Suboptimum 100%
  • Trajectory 33%
• 2005

  BEAST decoding - asymptotic complexity

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

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Decoding Complexity 100%
  • Asymptotic Complexity 100%
  • Complexity 100%
  • Algorithms 33%
  • Efficient Algorithm 33%

• 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., p. 1126-1130

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Probability Theory 100%
  • Posteriori 100%
  • Decoding 100%
  • Performance 40%
  • Codeword 40%

• 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., p. 2236-2240

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • State 100%
  • Error 100%
  • Error Correcting Capability 100%
  • Output 75%
  • Estimate 25%
• 2004

  A new look at the error-correcting capabilities of convolutional codes

  Ertl, S., Johannesson, R. & Pavlushkov, V., 2004, Proceedings. 2004 IEEE International Symposium on Information Theory. IEEE - Institute of Electrical and Electronics Engineers Inc., p. 406-406

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

• BEAST decoding for block codes

  Bocharova, I., Johannesson, R., Kudryashov, B. & Loncar, M., 2004, ITG-Fachbericht. VDI Verlag GMBH, p. 173-178

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Codes 100%
  • Block Code 100%
  • Nodes 50%
  • Simulation Result 25%
  • Code Tree 25%

• On APP-decoding using BEAST

  Bocharova, I., Johannesson, R., Kudryashov, B. & Loncar, M., 2004, International Symposium on Information Theory. ISIT 2004. Proceedings.. p. 345 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Probability Theory 100%
  • Searching 100%
  • Efficient Algorithm 100%
  • Posteriori Probability 100%
  • Posteriori 100%

• On unequal error protection for information symbols via active distances

  Pavlushkov, V., Johannesson, R. & Zyablov, V. V., 2004, Proceedings. 2004 IEEE International Symposium on Information Theory (IEEE Cat. No.04CH37522). IEEE - Institute of Electrical and Electronics Engineers Inc., p. 452-452

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • unequal error protection 100%
  • Information Symbol 100%
  • Code Sequence 50%
  • State Transition Diagram 50%
  • Error Pattern 50%
• 2003

  Low state complexity block codes via convolutional codes

  Bocharova, I., Johannesson, R. & Kudryashov, B., 2003, IEEE International Symposium on Information Theory, 2003. Proceedings.. p. 394 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

• On the burst error detecting and erasure correcting capabilities of convolutional codes

  Pavlushkov, V., Johannesson, R. & Zyablov, V. V., 2003, IEEE International Symposium on Information Theory - Proceedings. IEEE - Institute of Electrical and Electronics Engineers Inc., p. 422-422 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Bounds 100%
• 2002

  Convolutional codes with large slopes yield better tailbiting codes

  Bocharova, I., Handlery, M., Johannesson, R. & Kudryashov, B., 2002, IEEE International Symposium on Information Theory, 2002. Proceedings.. p. 258 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Upper Bound 100%

• How to efficiently find the minimum distance of tailbiting codes

  Bocharova, I., Handlery, M., Johannesson, R. & Kudryashov, B., 2002, IEEE International Symposium on Information Theory, 2002. Proceedings.. p. 259 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Computing 100%
  • Minimum Distance 100%
  • Bidirectional Algorithm 100%
  • Codes 100%

• On nested convolutional codes

  Jordan, R., Johannesson, R. & Bossert, M., 2002, IEEE International Symposium on Information Theory, 2002. Proceedings.. p. 425 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

• On the error correcting capability of convolutional codes: Old and new

  Handlery, M., Johannesson, R. & Zyablov, V. V., 2002, ITG-Fachbericht. VDI Verlag GMBH, p. 11-18

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Maximum Likelihood Method 100%
  • Coding 100%

• Soft-output-decoding: Some aspects from information theory

  Huettinger, S., Huber, J. & Johannesson, R., 2002, ITG-Fachbericht. VDI Verlag GMBH, p. 81-89

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  • Information Processing 100%
  • Information Theory 100%
  • Convolutional Code 50%
  • Input/Output 50%
  • Recent Literature 50%
• 2001

  An upper bound on decoding bit-error probability with linear coding on extremely noisy channels

  Handlery, M., Johannesson, R., Massey, J. L. & Ståhl, P., 2001, [Host publication title missing]. p. 131

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Coding 100%
  • Error Probability 100%
  • Bit Error 100%
  • Error Performance 50%
  • Concatenated Coding 50%
  163 Downloads (Pure)

• On interleaver design for serially concatenated convolutional codes

  Jordan, R., Höst, S. & Johannesson, R., 2001, [Host publication title missing]. p. 212

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File
  175 Downloads (Pure)

• Some distance properties of tailbiting codes

  Handlery, M., Höst, S., Johannesson, R. & Zyablov, V. V., 2001, [Host publication title missing]. p. 290

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Encoder 100%
  • Bounds 50%
  • Upper Bound 50%
  156 Downloads (Pure)
• 2000

  Decoding of woven convolutional codes and simulation results

  Jordan, R., Schnug, W., Bossert, M., Höst, S. & Johannesson, R., 2000, [Host publication title missing]. p. 96

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Convolutional Code 100%
  • Sliding Window 25%
  • Iterative Decoding 25%
  • Decoding Complexity 25%
  • Received Sequence 25%
  168 Downloads (Pure)

• On the decoding bit error probability for binary convolutional codes

  Johannesson, R., Massey, J. L. & Ståhl, P., 2000, [Host publication title missing]. p. 398

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Error Probability 100%
  • Bit Error 100%
  • Probability Theory 100%
  • Encoder 100%
  • Codes 75%
  161 Downloads (Pure)

• Searching for tailbiting codes with large minimum distances

  Bocharova, I., Kudryashov, B., Johannesson, R. & Ståhl, P., 2000, [Host publication title missing]. p. 341

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Bounds 100%
  • Asymptotic Behavior 50%
  • Time Axis 50%
  148 Downloads (Pure)

• The effect of the tailbiting restriction on feedback encoders

  Ståhl, P., Anderson, J. B. & Johannesson, R., 2000, [Host publication title missing]. p. 343

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Feedforward 100%
  • Signal-to-Noise Ratio 100%
  • Bit Error 100%
  • Error Performance 100%
  • Canonical Form 100%
  165 Downloads (Pure)
• 1998

  New tailbiting encoders

  Ståhl, P., Anderson, J. B. & Johannesson, R., 1998, [Host publication title missing]. p. 389

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Codes 100%
  • Rate Loss 100%
  • Block Code 100%
  134 Downloads (Pure)

• Nonequivalent cascaded convolutional codes obtained from equivalent constituent convolutional encoders

  Höst, S., Johannesson, R. & Zyablov, V. V., 1998, [Host publication title missing]. p. 338

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Encoder 100%
  • Probability Theory 25%
  • Constituent Code 25%
  159 Downloads (Pure)
• 1997

  Active distances and cascaded convolutional codes

  Höst, S., Johannesson, R., Zigangirov, K. & Zyablov, V. V., 1997, [Host publication title missing]. p. 107

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Bounds 100%
  194 Downloads (Pure)

• On the distribution of the output error burst lengths for Viterbi decoding of convolutional codes

  Höst, S., Johannesson, R., Zigangirov, D. K., Zigangirov, K. & Zyablov, V. V., 1997, [Host publication title missing]. p. 108

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Upper Bound 100%
  • Sphere 100%
  • Decoder 100%
  166 Downloads (Pure)

• Some results on convolutional codes over rings

  Johannesson, R., Wan, Z.-X. & Wittenmark, E., 1997, [Host publication title missing]. p. 284

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Predictable Degree Property 100%
  • Polynomial Generator Matrix 100%
  181 Downloads (Pure)
• 1996

  An expurgation upper bound on the probability of corret path loss for time-invariant convolutional codes

  Johannesson, R. & Zigangirov, K., 1996, [Host publication title missing]. Vol. 1. p. 548-551

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Convolutional Code 100%
  • Event 33%
  • Backtracking 33%
  151 Downloads (Pure)
• 1995

  Decoding procedure capacities for the Gilbert-Elliott channel

  Bratt, G., Johannesson, R. & Zigangirov, K., 1995, [Host publication title missing]. p. 288

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File
  244 Downloads (Pure)

• Upper bounds on the probability of the correct path loss for list decoding of fixed convolutional codes

  Johannesson, R. & Zigangirov, K., 1995, [Host publication title missing]. p. 163

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File
  152 Downloads (Pure)
• 1994

  A generalization of the predictable degree property to rational convolutional encoding matrices

  Johannesson, R. & Wan, Z.-X., 1994, [Host publication title missing]. p. 17

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Encoding Matrix 100%
  • Polynomial 33%
  155 Downloads (Pure)

• New results on estimations of the burst and bit error probabilities for fixed convolutional codes

  Balakirsky, V., Johannesson, R. & Zigangirov, K., 1994, [Host publication title missing]. p. 271

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File
  169 Downloads (Pure)
• 1993

  Efficient splitting of multidimensional alphabets for modulation codes

  Johannesson, R., Persson, J. & Zigangirov, K., 1993, [Host publication title missing]. p. 288

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File
  154 Downloads (Pure)

• Systematic feed-forward convolutional encoders are as good as other encoders with an M-algorithm decoder

  Osthoff, H., Johannesson, R. & Anderson, J. B., 1993, Abstracts, International Symp. on Information Theory. IEEE - Institute of Electrical and Electronics Engineers Inc., p. 268 1 p.

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Decoder 100%
  • Encoder 100%
  • Algorithms 100%
  • Historical Review 33%
  219 Downloads (Pure)
• 1991

  Estimating the computational cut-off rate for the Gilbert-Elliott channel

  Johannesson, R. & Zigangirov, K., 1991, [Host publication title missing]. p. 291

  Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

  File

  • Sequential Decoding 100%
  • Communicates 50%
  66 Downloads (Pure)