Prof. Hendrik C. Ferreira

JOURNALS

IEEE TRANSACTIONS (USA)
  1. H.C. Ferreira, “On dc Free Magnetic Recording Codes Generated by Finite State Machines,” IEEE Transactions on Magnetics, Vol. Mag‑19, no. 6, November 1983, pp. 2691‑2693.
  2. H.C. Ferreira, “Lower bounds on the minimum Hamming distance achievable with runlength constrained or dc free block codes and the synthesis of a (16,8) dmin=4 dc free block code,” IEEE Transactions on Magnetics, Vol. MAG‑20,  5, September 1984, pp. 881‑883.
  3. H.C. Ferreira, “The synthesis of magnetic recording trellis codes with good Hamming distance properties,”  IEEE Transactions on Magnetics, Vol. MAG‑21, no. 5, September 1985, pp. 1356‑1358.
  4. H.C. Ferreira, J.F. Hope and A.L Nel, “Binary rate four eighths, runlength constrained, error correcting magnetic recording modulation code,” IEEE Transactions on Magnetics, vol. MAG‑22, no. 5, September 1986, pp. 1197‑1199.
  5. H.C. Ferreira, J.F. Hope, A.L. Nel and M.A. van Wyk, “Viterbi decoding and the power spectral densities of some rate one half binary dc free modulation codes,” IEEE Transactions on Magnetics, Vol. MAG‑23, no. 3, May 1987, pp. 1928‑1934.
  6. H.C. Ferreira, J.F Hope and A.L. Nel, “On Ternary Error Correcting Line Codes,” IEEE Transactions on Communications, Vol. 37, no. 5, May 1989, pp. 510‑515.
  7. H.C. Ferreira, D.A. Wright and A.L. Nel,   “Hamming distance preserving mappings and trellis codes with constrained binary symbols,” IEEE Transactions on Information Theory, Vol. 35, no. 5, September 1989, pp. 1098‑1101.
  8. A.S.J. Helberg and HC Ferreira, “Runlength constrained recording codes with ancillary channels,” IEEE Transactions on Magnetics, Vol. MAG‑26, no. 5, September 1990, pp. 2321‑2323.
  9. C.S. Coetzee, H.C. Ferreira and P.G.W. van Rooyen, “On the Performance and Implementation of a Class of Error and Erasure Control (d, k) block codes,” IEEE Transactions on Magnetics, Vol. MAG‑26, no. 5, September 1990, pp. 2312‑2314.
  10. H.C. Ferreira, D.A. Wright, A.S.J. Helberg, I.S. Shaw and C.R. Wyman, “Some new rate R=k/n (2≤ k ≤ n ‑ 2) systematic convolutional codes with good distance profiles,” IEEE Transactions on Information Theory, Vol. IT‑37, no. 3, May 1991, pp. 649‑653.
  11. H.C. Ferreira and S. Lin, “Error and Erasure Control (d, k) Block Codes,” IEEE Transactions on Information Theory, Vol.  IT‑37, no. 5, September 1991, pp. 1399‑1408.
  12. C. Menyennett, L. Botha and H.C. Ferreira, “A New Runlength Limited Code for Binary Asymmetrical Channels”, IEEE Transactions on Magnetics, Vol.  MAG‑28, no. 5, September 1992, pp. 2901‑2903.
  13. A.S.J. Helberg and H.C. Ferreira, “On the complete decoding of constrained codes,” IEEE Transactions on Information Theory, Vol.  IT‑39, no. 1, January 1993, pp. 228‑232.
  14. F. Swarts and H.C. Ferreira, “Markov characterization of channels with soft decision outputs,” IEEE Transactions on Communications, Vol. 41, no. 5, May 1993, pp. 678‑682.
  15. H.C. Ferreira, C.S. Coetzee and M.A. Herro, “Mathematical models for super channels with imbedded constrained codes,” IEEE Transactions on Information Theory, Vol. IT‑39, no. 3, May 1993, pp. 1094‑1100.
  16. A.S.J. Helberg, W.A. Clarke, H.C. Ferreira and A.J. Han Vinck, “A class of dc free, synchronization error correcting codes”, IEEE Transactions on Magnetics, Vol.  MAG‑29, no. 6, November 1993, pp. 4048‑4049.
  17. C. Menyennett and H.C. Ferreira, “Sequences and a new code with spectral nulls at rational submultiples of the symbol frequency”, IEEE Transactions on Magnetics, Vol.  MAG‑29, no. 6, November 1993, pp. 4042‑4044.
  18. D.R. Oosthuizen, H.C. Ferreira and F. Swarts,   “On renewal inner channels and block code error control super channels,” IEEE Transactions on Communications, Vol. 42, no. 9, September 1994, pp. 2645-2649.
  19. S.S. Malladi, F.Q. Wang, D.J. Costello and H.C. Ferreira, “Construction of trellis codes with a good distance profile,” IEEE Transaction on Communications, Vol. 42, no. 2/3/4,  February/March/April 1994, pp. 290-298.
  20. F. Swarts and H.C. Ferreira, “Markov characterization of digital fading mobile VHF channels,” IEEE Transactions on Vehicular Technology, Vol.  43, no. 4, November 1994, pp. 977-985.
  21. C. Menyennett and H.C. Ferreira, “Spectral properties of (d, k) codes with multiple spacing,”  IEEE Transactions on Magnetics, Vol.  MAG‑30, no.6, November 1994, pp. 4215-5220.
  22. C. Menyennett and HC Ferreira, “Sequences and Codes with Asymmetrical Runlength Constraints,” IEEE Transactions on Communications, Vol. 43, no. 5, May 1995, pp. 1862-1865.
  23. A. Kuznetsov, F. Swarts, A.J. Han Vinck and H.C. Ferreira, “On the Undetected Error Probability of Linear Block Codes on Channels with Memory,” IEEE Transactions on Information Theory, Vol.  42, no. 1, January 1996, pp. 303-309.
  24. H.C. Ferreira, W.A. Clarke, A.S.J. Helberg, KAS Abdel-Ghaffar and A.J. Han Vinck, “Insertion/deletion correction with spectral nulls”, IEEE Transactions on Information Theory, Vol.  43, no.2, March 1997, pp. 722-732.
  25. K.A.S. Abdel-Ghaffar and H.C. Ferreira, “Systematic encoding of the Varshamov-Tenengol’ts codes and the Constantin-Rao codes,” IEEE Transactions on Information Theory, Vol. 44, no. 1, January 1998, pp. 340-345.
  26. A.S.J. Helberg and H.C. Ferreira, “On multiple insertion/deletion correcting codes,” IEEE Transactions on Information Theory, Vol.  48, no.1, January 2002, pp. 305-308.
  27. T.G. Swart and H..C Ferreira, “A Note on Double Insertion/Deletion Correcting Codes,” IEEE Transactions on Information Theory, Vol.  49, no.1, January 2003, pp. 269-273.
  28. P.J. van Rensburg and H.C. Ferreira, “Design of a Bi-Directional Impedance-Adapting Transformer Coupling Circuit for Low-Voltage Power-Line Communications,” IEEE Transactions on Power Delivery, Vol. 20, no. 1, January 2005, pp. 64-70
  29. H.C. Ferreira, A.J. Han Vinck, T.G. Swart and .I de Beer, “Permutation Trellis Codes, “ IEEE Transactions on Communications, Vol. 53, no. 11, November 2005, pp. 1782-1789.
  30. T.G. Swart and HC Ferreira, “A Generalized Upper Bound and a Multilevel Construction for Distance-Preserving Mappings,” IEEE Transactions on Information Theory, Vol.  52, no. 8, August 2006, pp. 3685-3695.
  31. P.J. van Rensburg and HC Ferreira,” Coupler Winding Ratio Selection for Effective Narrow-Band Power-Line Communications,” IEEE Transactions on Power Delivery, Vol. 23, no. 1, January 2008, pp. 140-149.
  32. T.G. Swart, H.C. Ferreira and K. Ouahada, “Using graphs for the analysis and construction of permutation distance-preserving mappings,” IEEE Transactions on Information Theory, Vol. 54, no. 2, February 2008, pp. 910-916.
  33. HC Ferreira, KAS Abdel-Ghaffar, L Cheng, T.G. Swart and K Ouahada, “Moment Balancing Templates: Constructions to Add Insertion/Deletion Correction Capability to Error Correcting or Constrained Codes,” IEEE Transactions on Information Theory, Volume 55, no. 8, August 2009, pp. 3494 – 3500.
  34. PA Janse van Rensburg and HC Ferreira, “Design and Evaluation of a Dual Impendence – Adapting Power-Line Communications Coupler,” IEEE Transactions on Power Delivery, Volume 25, no. 2, February 2010, pp. 667-673.
  35. AJ Snyders, PA Janse van Rensburg and HC Ferreira, “M-FSK Carrier Gain Adjustment for Improved Power-Line Communications,” IEEE Transaction on Power Delivery, Volume 25, no.2, February 2010, pp. 674-679.
  36. DJJ Versfeld, James Ridley, H.C. Ferreira, and ASJ Helberg, “On Systematic Generator Matrices for Reed-Solomon Codes,” IEEE Transactions on Information Theory, Volume 25, No. 2, Issue 6, June 2010, pp. 2549-2550.
  37. K.A.S. Abdel-Ghaffer, H.C. Ferreira and L Cheng, “Correcting Deletions Using Linear and Cyclic Codes,” IEEE Transactions on Information Theory, Vol. 56, No. 10, October 2010, pp. 5223-5234.
  38. D.J.J. Versfeld, A.J.H. Vinck, J.N. Ridley and HC Ferreira, “Constructing Coset Codes with Optimal Same-Symbol Weight for Detecting Narrowband Interference in M-FSK Systems, “ IEEE Transactions on Information Theory, Vol. 56, no. 12, December 2010, pp. 6347-6353.
  39. F. Palunčić, H.C. Ferreira, W.A. Clarke, “A Variable Length Approach to Moment Balancing,” IEEE Transactions on Information Theory, Vol. 56, no. 10, October 2010, pp. 5235-5244.
  40. L. Cheng, H.C. Ferreira, K. Ouahada, “Moment Balancing Templates for Spectral Null Codes,” IEEE Transactions on Information Theory, Vol. 56, no. 8, August 2010, pp. 3749-3753.
  41. JH Weber, KAS Immink and H.C. Ferreira, “Error – Correcting Balanced Knuth Codes,” IEEE Transactions on Information Theory, Vol. 58, no. 1, January 2012, pp. 82-89.
  42. K.A.S. Abdel-Ghaffar, F. Paluncic,  H.C. Ferreira, and WA Clarke, “On Helberg’s Generalization of the Levenshtein Code for Multiple Deletion/Insertion Error Correction”, IEEE Transactions on Information Theory, March 2012,  Vol. 58, no. 3, pp. 1804-1808.
  43. F. Paluncic, K.A.S Abdel-Ghaffar, H.C. Ferreira and WA Clarke, “A Multiple Insertion/Deletion Correcting Code for Run-Length Limited Sequences”,  IEEE Transactions  on Information Theory, Vol. 58, no. 3, March 2012, pp. 1809-1824.
  44. L. Cheng, H.C. Ferreira and I Broere, “Moment balancing templates for (d, k) constrained codes and run-length limited sequences,” IEEE Transactions on Information Theory, Vol. 58, no. 4, April 2012, pp. 2244-2252.
  45. T. Shongwe, T.G. Swart, H.C.Ferreira and Tran van Trung, “Good Synchronization Sequences for Permutation Codes,” IEEE Transactions on Communications, Vol. 60, no. 5,  May 2012,  pp. 1204-1208.
  46. F. Paluncic, Khaled AS Abdel-Ghaffar and H.C. Ferreira, “Insertion/Deletion Detecting Codes and the Boundary Problem,” IEEE Transactions on Information Theory, Vol. 59, no. 9, September 2013, pp. 5935-5943.
SPRINGER JOURNALS (USA)
  1. K. Ouahada, T.G. Swart, H.C. Ferreira and L Cheng, “Binary Permutation Sequences as Subsets of Levenshtein Codes, Spectral Null Codes, Run-length Limited Codes and Constant Weight Codes,” Designs, Codes and Combinatorics, Vol. 48, November 2008, pp. 141-154.
  2. K. Ouahada, T.G. Swart, HC Ferreira, “Permutation Sequences and Coded PAM Signals with   Spectral Nulls at Rational Submultiples of the Symbol Frequency,” Cryptography and Communications – Discrete Structures, Boolean Functions and Sequences, DOI 10.1007/512095-010-0040-0, Springer, 2011, p. 87 – 108.
 IEE/IET PROCEEDINGS (UK)
  1. L. Botha, H.C. Ferreira and I. Broere, “Multilevel sequences and line codes,” IEE Proceedings-I, Communications, Vol.  140, no. 4, August 1993, pp. 255‑261.
  2. L. Botha, C. Menyennett and H.C. Ferreira, “Low frequency suppression of baseband coded sequences,” IEE Proceedings-I, Communications, Vol. 142, no. 2, April 1995, pp. 49-53.
  3. K. Ouahada and H.C. Ferreira, “Simulation study of the performance of ternary line codes under Viterbi decoding,” IEE Proceedings-I, Communications, Vol. 151, no. 5, October 2004, pp. 409-414.
INTERNATIONAL JOURNAL ON ELECTRONICS (UK)
  1. L. Botha, C. Menyennett and H.C. Ferreira, “The transformation of line codes,” International Journal on Electronics, Vol. 77, no. 4, April 1994, pp. 417-429.
ELECTRONICS LETTERS (UK)
  1. H.C. Ferreira, J.F. Hope, A.L. Nel and M.A. van Wyk,   “Jacoby and Kost’s binary two-thirds rate modulation code,”   Electronics Letters, Vol.  22, no. 22, 23rd October 1986, pp. 1155‑1157.
  2. J.F. Hope, H.C. Ferreira and A.L. Nel, “Capacities of sequences of currently used ternary line codes,”   Electronics Letters, Vol. 23, no. 13, 18th June 1987, pp. 681‑683.
  3. HC Ferreira, W de V Stegmann and CR Wyman, “Comparison between the Jacoby-Kost and Horiguchi-Morita binary two-thirds rate modulation codes,”   Electronics Letters, Vol. 23, no. 16, 30th July 1987, pp. 837‑838.
  4. JF Hope and HC Ferreira, “Error burst and guard space observations on CCITT PCM channels,” Electronics Letters, Vol. 24, no. 12, 9th June 1988, pp. 739‑740.
  5. G van Rensburg and HC Ferreira, “Four new runlength constrained recording codes,”   Electronics Letters, Vol. 24, no. 17, 18th August 1988, pp. 1110‑1111.
  6. HC Ferreira, “Performance of time diversity/convolutional coding scheme,” Electronics Letters, Vol. 24, no. 24, 24th November 1988, pp. 1477‑1478.
  7. DR Oosthuizen and HC Ferreira, “Mathematical models for Hamming code error control system on an HF channel,” Electronics Letters, Vol. 25, no. 4, 16th February 1989, pp. 262‑264.
  8. G van Rensburg and HC Ferreira, “Performance of four new runlength constrained recording codes,”   Electronics Letters, Vol. 25, no. 11, 25th May 1989, pp. 745‑746.
  9. F Swarts, HC Ferreira and DR Oosthuizen, “Renewal channel models for PSK on a slowly fading Rayleigh channel,” Electronics Letters, Vol. 25, no. 22, 26th October 1989, pp. 1514‑1515.
  10. L Botha, HC Ferreira and M Whalley, “Two new ternary line codes,” Electronics Letters, Vol. 26, no. 24, 22nd November 1990, pp. 1989‑1990.
  11. ASJ Helberg, and HC Ferreira, “Some new runlength constrained binary modulation codes with error-correcting capabilities,” Electronics Letters, Vol. 28, no. 2, 16th January 1992, pp. 137‑139.
  12. L Fouché, L Botha and HC Ferreira, “Band pass line codes,” Electronics Letters, Vol.  28, no. 21, 8th October 1992, pp. 2008‑2009.
  13. TG Swart and HC Ferreira, “Insertion/deletion correcting coding schemes based on convolutional coding,” Electronics Letters, Vol.  38, no. 16, 1st August 2002, pp. 871-873.
  14. K Ouahada and HC Ferreira, “Soft-decision decoding of some ternary line codes,” Electronics Letters, Vol. 39, no. 14, 10th July 2003, pp. 1068-1069.
  15. HC Ferreira, JH Weber, CH Heymann and KAS Immink, “Markers to construct DC free (d, k) constrained balanced block codes using Knuth’s inversion,” Electronics Letters, Vol. 48, no. 19, 13th September 2012, pp. 1209 – 1211.

 

TRANSACTIONS OF THE SOUTH AFRICAN INSTITUTE OF ELECTRICAL ENGINEERS /
SAIEE RESEARCH IN AFRICA JOURNAL (SOUTH AFRICA)
  1. ASJ Helberg and HC Ferreira, “Exploiting the capacity of the discrete input restricted channel,” Transactions of the SA Institute of Electrical Engineers, Vol. 81, no. 3, September 1990, pp. 31‑37.
  2. C Menyennett and HC Ferreira, “An experimental study of new multilevel line codes,”   Transactions of the SA Institute of Electrical Engineers, Vol. 82, no. 2, June 1991, pp. 112‑122.
  3. PGW van Rooyen and HC Ferreira,   “On high rate maximum runlength limited (d, k) blocked line codes,”   Transactions of the SA Institute of Electrical Engineers, Vol. 83, no. 1, March 1992, pp. 52‑58.
  4. A van Heerden and HC Ferreira, “Statistical modelling of frequency hopped VHF channels in an urban environment and error correction on the channel,” Transactions of the SA Institute of Electrical Engineers, Special Issue:  Telecommunications, Signal Processing and Information Theory, Vol.  84, no.2, June 1993, pp. 181‑188.
  5. C Menyennett and HC Ferreira, “The synthesis of a new dc-free code with asymmetrical runlength constraints developed with the ACH-algorithm,” Transactions of the SA Institute of Electrical Engineers, Special Issue:  Telecommunications, Signal Processing and Information Theory, Vol.  84, no. 2, June 1993, pp. 189‑192.
  6. HC Ferreira, and O Hooijen,   “Power line communications:  An overview” Transactions of the South African Institute of Electrical Engineers, Vol.  86, no. 3, September 1995, pp. 145-161.
  7. JS Swarts and HC Ferreira, “Gilbert channel model parameters for GMSK on a Raleigh fading channel,” Transactions of the SA Institute of Electrical Engineers, Vol. 92, no .3, September 2001,  pp. 70-74.
  8. MPF dos Santos, WA Clarke, HC Ferreira and TG Swart, “Correction of Insertion/Deletions Using Standard Convolutional Codes and the Viterbi Decoding Algorithm,” Transactions of the SAIEE, Vol. 95, no. 4, December 2004, pp. 265-269.
  9. L Cheng and HC Ferreira, “Pruned convolutional codes and Viterbi decoding using the Levenshtein distance metric applied to asynchronous noisy channels,” SAIEE Africa Research Journal, Vol.  97, no.2, June 2006, pp. 140-145.
  10. WA Clarke and HC Ferreira, “Levenshtein distance-based coding for synchronous, fixed length decoding windows in the presence of insertions/deletions,” SAIEE Africa Research Journal, Vol.  97, no. 2, June 2006, pp. 146-150.
  11. TG Swart, HC Ferreira and MPF dos Santos, “Insertion/deletion correction by using parallel-interconnected Viterbi decoders,” SAIEE Africa Research Journal, Vol.  97, no. 2, June 2006, pp. 151-156.
  12. K Ouahada, HC Ferreira, AJ Han Vinck, A J Snyders and TG Swart, “Combined Spectral Shaping Codes and OFDM Modulation for Narrowband Interference Channels,” SAIEE Research in Africa Journal, Vol.  99, no. 1 March 2008, pp. 11-17.
  13. H Zhu, WA Clarke and HC Ferreira, “Watermarking for JPEG Image Using Error Correction Coding,” SAIEE Africa Research Journal, Vol.  99, no. 4, May 2009, pp. 98-103.
  14. K Ouahada and HC Ferreira, “On the Generating Function and its Application to Ternary Line,” SAIEE Africa Research Journal, Vol. 101, no. 4, Dec 2010, pp. 121 – 139.
  15. K Ouahada and HC Ferreira, “A Simulation and Graph Theoretical Analysis of Certain Properties of Spectral Null Codebooks”, SAIEE Africa Research Journal, Vol. 103, no. 3, September 2012, pp. 106-115.
  16. K. Ouahada, L. Cheng and HC Ferreira “A Comparative Study on the Distance-Optimality for Distance-Preserving Mappings Constructions with Cyclic-Shift Technique”, SAIEE Africa Research Journal, Vol. 103 no. 4 December 2012, pp. 156 – 165.

OTHER JOURNALS

  1. HC Ferreira, “Of codes, combinatorics and information theory:  the input restricted communications channel,” SA Journal of Science, Vol. 86, no. 2, February 1990, pp. 75‑78.
  2. J Steyn, C van der Westhuizen, HC Ferreira and WA Clarke, “Investigating a New System Set-up for Multimedia Distance Education,” Elektron Magazine, Vol. 21, no. 10, October 2004, pp. 44- 46.
  3. HC Ferreira, “Fakulteit Ingenieurswese,” Oorsigsartikel met tema Wetenskapsbeoefening , RAU Aambeeld (Finale Uitgawe), Jaargang 31, Nommer 2, pp. 61-65.
  4. F Palunčić, HC Ferreira, TG Swart and WA Clarke, “Modelling Distances between Genetically Related Languages using extended Weighted Levenshtein Distance,” Southern African Journal of Linguistics and Applied Language Studies, Vol. 27, no. 4, December, 2009, pp. 381-389.
  5. K Ouahada and HC Ferreira, “Generation of Spectral Nulls with Permutation Sequences,” AEU – International Journal of Electronics and Communications, Vol. 67,     (1), January 2013, pp. 1-9.

BOOKS

  1. HC Ferreira, L Lampe, JE Newbury and TG Swart, Editors: “Power Line Communications,” John Wiley and Sons, UK, ISBN 978-0-470-740309, June 2010.

CONTRIBUTIONS IN BOOKS (INTERNATIONAL)

  1. PGW van Rooyen and HC Ferreira, “An experimental study of (d, k) and (d, k, C) binary constrained codes,” chapter in Communications Theory and Applications: Systems, Signal Processing and Error Control Coding.   Editors:  B Honary, M Darnell and PG Farrell, HW Communications Ltd, Lancaster, UK, 1993.
  2. HC Ferreira, HM Grove, O Hooijen and AJ Han Vinck, “Power Line Communication,” Wiley Encyclopaedia of Electrical and Electronics Engineering, JG Webster Editor, Vol. 16, John Wiley & Sons, New York, 1999, pp. 706-716.
  3. HC Ferreira and WA Clarke, “Introduction to Constrained Binary Codes With Error Correction Capability,” Coding and Signal Processing for Magnetic Recording Systems, Section IV: Coding for Read Channels, Editors: B Vasic & E Kurtas, CRC Press, New York, USA, November  2004, pp. 20.1 – 20.17, ISBN 0-8493-1524-7.

K Ouahada and HC Ferreira, “A Graph Theoretic Approach for Certain Properties of Spectral Null Codes”, New Frontiers in Graph Theory, pp. 1-18, Intech publisher, ISBN 978-953-51-0115-4, Department of Electrical and Electronic Engineering Science, University of Johannesburg, South Africa. Editor: Dr. Yagang Zhang, North China Electric Power University, Baoding, China, 2012, Publisher: InTech – Open Access Publisher.