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- Daniel J. J. Versfeld, A. J. Han Vinck, James N. Ridley, Hendrik C. Ferreira
- IEEE Trans. Information Theory
- 2010

- Daniel J. J. Versfeld, James N. Ridley, Hendrik C. Ferreira, Albertus S. J. Helberg
- IEEE Trans. Information Theory
- 2010

- D J J Versfeld, A J H Vinck, J N Ridley, H C Ferreira
- IEEE Transactions on Information Theory
- 2010

Narrowband interference can cause undetected errors when M-FSK data is encoded with an algebraic code containing the all-<i>e</i> codewords. This is due to the fact that the narrowband interferer will cause the output of the M-FSK demodulator to correspond to one of the all- <i>e</i> codewords. One possible solution is to use a coset code of a code… (More)

- O. O. Ogundile, Olutayo Oyeyemi Oyerinde, Daniel J. J. Versfeld
- IET Communications
- 2015

- Mitchell A Cox, Carmelo Rosales-Guzmán, Martin P J Lavery, Daniel J Versfeld, Andrew Forbes
- Optics express
- 2016

Free-space optical communication with spatial modes of light has become topical due to the possibility of dramatically increasing communication bandwidth via Mode Division Multiplexing (MDM). While both scalar and vector vortex modes have been used as transmission bases, it has been suggested that the latter is more robust in turbulence. Using orbital… (More)

- O. O. Ogundile, Daniel J. J. Versfeld
- IEEE Access
- 2016

- Daniel J J Versfeld, James N Ridley, Hendrik C Ferreira, Albert S J Helberg
- IEEE Transactions on Information Theory
- 2010

We derive a simple formula to generate a wide-sense systematic generator matrix <i>B</i> for a Reed-Solomon code. Specifically, we generate the generator matrix <i>B</i> such that the columns with indices ¿<sub>1</sub>, ¿<sub>2</sub>,..., ¿<i>k</i> are the columns of the identity matrix <i>Ik</i>. One possible application of these wide-sense matrices is… (More)

- O. O. Ogundile, Daniel J. J. Versfeld
- WTS
- 2015

- O. O. Ogundile, Daniel J. J. Versfeld
- 2014 IEEE 17th International Conference on…
- 2014

Reliability information derived from the channel output in the form of a Log Likelihood Ratio or a Distance Metric (DM) have been proposed in literature for M-ary Quadrature Amplitude Modulation systems. Reliable soft information from the channel output improves the performance of the forward error correction decoding algorithm. This paper proposes an… (More)

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