Zobrazeno 1 - 10
of 270
pro vyhledávání: '"Hendrik C. Ferreira"'
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 64, Iss No 4 (2018)
This article investigates and evaluates a handover exchange scheme between two secondary users (SUs) moving in different directions across the handover region of neighboring cell in a cognitive radio network. More specifically, this investigation com
Externí odkaz:
https://doaj.org/article/1539d0c5156948149d24dc517ab82260
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 64, Iss No 4 (2018)
Queuing regime is one outstanding approach in improving channel aggregation. If well designed and incorporated with carefully selected parameters, it enhances the smooth rollout of fifth/next generation wireless networks. While channel aggregation is
Externí odkaz:
https://doaj.org/article/cd0a28c136e64ef6a943cca62cb7773e
Publikováno v:
Advances in Science, Technology and Engineering Systems Journal. 6:933-941
Publikováno v:
Telecommunication Systems. 77:389-398
In the indoor environment of multiple-story buildings, the line-of-sight (LOS) radio frequency (RF) signal is generally obstructed by walls and slabs. As a solution to this dilemma, power line communication (PLC) is an alternative to overcome the LOS
Publikováno v:
IEEE Transactions on Information Theory. 65:7045-7066
A novel Knuth-like balancing method for runlength-limited words is presented, which forms the basis of new variable- and fixed-length balanced runlength-limited codes that improve on the code rate as compared to balanced runlength-limited codes based
Publikováno v:
Telecommunication Systems. 73:521-530
Signals from indoor access points in a wireless fidelity suffer from high attenuation as a result of the thick walls and metal structures in the multilevel-storey buildings where they are deployed. This is due to the scattering of the retransmitted s
Publikováno v:
Journal of Communications. :1104-1109
Autor:
Hendrik C. Ferreira, Khmaies Ouahada
Publikováno v:
Communications in Applied and Industrial Mathematics, Vol 10, Iss 1, Pp 53-70 (2019)
A New graph distance concept introduced for certain coding techniques helped in their design and analysis as in the case of distance-preserving mappings and spectral shaping codes. A graph theoretic construction, mapping binary sequences to permutati
Publikováno v:
Communications in Applied and Industrial Mathematics, Vol 10, Iss 1, Pp 88-108 (2019)
Power-line channel is considered to be a very hostile channel compared to other channels in view of the different types of noise that could exist. Therefore, the choice of the error correcting code and the modulation scheme can play a big role in com
Publikováno v:
IET Communications. 13:85-92
The radio frequency spectrum has become very congested and scarce. A response to this dilemma is the implementation of visible light communications (VLC) technology, which is enabled by the dramatic development of light emitting diodes (LEDs) and las