Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Title

Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Title

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  • A primer on equalization, decoding and non-iterative joint equalization and decoding 
    Olivier, Jan Corne; Myburgh, Hermanus Carel (Hindawi Publishing Corporation, 2013-04-15)
    In this article, a general model for non-iterative joint equalization and decoding is systematically derived for use in systems transmitting convolutionally encoded BPSK-modulated information through a multipath channel, ...
  • Process knowledge-guided autonomous evolutionary optimization for constrained multi-objective problems 
    Zuo, Mingcheng; Gong, Dunwei; Wang, Yan; Ye, Xianming; Zeng, Bo; Meng, Fanlin (Institute of Electrical and Electronics Engineers, 2024-02)
    Various real-world problems can be attributed to constrained multi-objective optimization problems. Although there are various solution methods, it is still very challenging to automatically select efficient solving ...
  • Protection testing for multiterminal high-voltage dc grid : procedures and assessment 
    Liu, Zhou; Mirhosseini, Seyed Sattar; Popov, Marjan; Audichya, Yash; Colangelo, Daniele; Jamali, Sadegh; Palensky, Peter; Hu, Weihao; Chen, Zhe (Institute of Electrical and Electronics Engineers, 2020-09)
    The application of multiterminal (MT), high-voltage dc (HVdc) (MTdc) grid technology requires test procedures for the operation and implementation of the protection solutions. The test procedures are usually derived from ...
  • Pseudo-elliptic bandpass filter with subharmonic stubs 
    Malherbe, J.A.G., 1940- (Institution of Engineering and Technology, 2011-02)
    A simple bandpass filter that approximates equal ripples in both the pass band and the stopband is described. The filter comprises two stubs, resonant at one-half and one-quarter of the centre frequency, respectively, and ...
  • Pseudo-elliptic bandstop filter with 1:2:3 harmonic ratio stubs 
    Malherbe, J.A.G., 1940- (Institution of Engineering and Technology, 2013-01)
    By employing open circuited stubs with a length ratio of 1:2:3 separated by three unit elements, it is shown that a pseudo-elliptic frequency response can be obtained with a compact structure. It has an electrical ...
  • Pseudo-elliptic function bandstop filter with shunt foster sections 
    Malherbe, J.A.G., 1940-; Louw, Johannes J. (Wiley, 2013-08)
    Filters with transmission zeros in the stopband have been shown to have superior rates of cutoff. Conventional Cauer filters give excellent performance but are relatively large and not always practically realizable. In ...
  • Pure-tone audiometry without bone-conduction thresholds : using the digits-in-noise test to detect conductive hearing loss 
    De Sousa, K.C. (Karina); Smits, Cas; Moore, David R.; Myburgh, Hermanus Carel; Swanepoel, De Wet (Taylor and Francis, 2020)
    OBJECTIVE: COVID-19 has been prohibitive to traditional audiological services. No- or low-touch audiological assessment outside a sound-booth precludes test batteries including bone conduction audiometry. This study ...
  • QoS provisioning and energy saving scheme for distributed cognitive radio networks using deep learning 
    Hlophe, Mduduzi Comfort; Maharaj, Bodhaswar Tikanath Jugpershad (Korean Institute of Communications and Information Sciences, 2020-06)
    One of the major challenges facing the realization of cognitive radios (CRs) in future mobile and wireless communications is the issue of high energy consumption. Since future network infrastructure will host real-time ...
  • Quad-ridge horn antenna with elliptically shaped sidewalls 
    Jacobs, Ockert Botha; Odendaal, J.W. (Johann Wilhelm); Joubert, Johan (Institute of Electrical and Electronics Engineers, 2013)
    We present a quad-ridge horn antenna as a feed for a reflector antenna for use in radio astronomy applications. The antenna uses elliptically shaped sidewalls to limit the variation of beamwidth over a wide frequency ...
  • Quasi-enumerative coding of balanced run-length limited codes 
    Paluncic, Filip; Maharaj, Bodhaswar Tikanath Jugpershad (Institute of Electrical and Electronics Engineers, 2024-03)
    Various methods have been proposed for the construction of balanced run-length limited codes. Amongst these methods is the enumerative coding approach by Kurmaev. The advantage of this approach is that the code has maximum ...
  • Queueing analysis of performance measures under a new configurable channel allocation in cognitive radio 
    Wang, Shi; Maharaj, Bodhaswar Tikanath Jugpershad; Alfa, Attahiru Sule (Institute of Electrical and Electronics Engineers, 2018-10)
    To help achieve optimal channel allocation for a cognitive radio network with multiple channels and multiple users, the authors propose an queueing analytical framework for implementing a configurable channel allocation ...
  • Queueing models for cognitive radio networks : a survey 
    Paluncic, Filip; Alfa, Attahiru Sule; Maharaj, Bodhaswar Tikanath Jugpershad; Tsimba, Hilary Mutsawashe (Institute of Electrical and Electronics Engineers, 2018)
    Cognitive radio networks (CRNs) are an emerging paradigm for next generation wireless communication systems allowing for more ef cient radio spectrum utilization. In order to harness the full potential that CRNs may ...
  • Radio-wave propagation prediction model tuning of land cover effects 
    Ballot, Magdalena (Institute of Electrical and Electronics Engineers, 2014-10)
    The effect of land cover is incorporated in the radio propagation prediction algorithm of Q-Rap. It is implemented by optimizing both the effective height of the land cover, hence affecting obstruction-loss calculations, ...
  • Rapid detection of new and expanding human settlements in the Limpopo province of South Africa using a spatio-temporal change detection method 
    Kleynhans, Waldo; Salmon, Brian Paxton; Wessels, K.J. (Konrad); Olivier, Jan Corne (Elsevier, 2015-08)
    Recent development has identified the benefits of using hyper-temporal satellite time series data for land cover change detection and classification in South Africa. In particular, the monitoring of human settlement expansion ...
  • Reactive power and harmonic compensation : a case study for the coal-mining industry 
    Roos, F.; Bansal, Ramesh C. (Energy Research Centre, University of Cape Town, 2019-02)
    This study reports on a case study in Grootegeluk Mine: Exxaro Coal, Lephalale, South Africa, in terms of power factor correction (PFC), load flow, harmonic frequency scans and harmonic voltage distortion anal-yses. The ...
  • A real-time energy management and speed controller for an electric vehicle powered by a hybrid energy storage system 
    Zhang, Lijun; Ye, Xianming; Xia, Xiaohua; Barzegar, Farshad (Institute of Electrical and Electronics Engineers, 2020-10)
    A real-time unified speed control and power flow management system for an electric vehicle (EV) powered by a battery-supercapacitor hybrid energy storage system (HESS) is developed following a nonlinear control system ...
  • Real-time Internet of Things architecture for wireless livestock tracking 
    Stojkoska, Biljana Risteska; Bogatinoska, Dijana Capeska; Scheepers, Gerhard; Malekian, Reza (Telecommunications Society and Academic Mind, 2018)
    Automatic livestock tracking is necessary for countries facing stock theft problems, like South Africa and Kenya. This paper presents a conceptual design of architecture for real-time wireless livestock tracking based ...
  • Realization of multivariable nonlinear systems via the approaches of differential forms and differential algebra 
    Zhang, Jiangfeng; Moog, Claude H.; Xia, Xiaohua (Institute of Information Theory and Automation of Academy of Sciences of the Czech Republic, 2010)
    In this paper differential forms and differential algebra are applied to give a new definition of realization for multivariable nonlinear systems consistent with the linear realization theory. Criteria for the existence ...
  • Receding horizon operation control of a compressed natural gas station 
    Kagiri, Charles; Zhang, Lijun; Xia, Xiaohua (Elsevier, 2019-02)
    In order to lower the cost of gas delivery to consumers who use compressed natural gas to propel their vehicles, operators of compressed natural gas stations in locations where electricity is sold under time-of-use tariff ...
  • Recloser based energy exposure assessment of a distribution network 
    Thomas, R.; Van Zyl, S.; Naidoo, Raj; Bansal, Ramesh C.; Mbungu, Nsilulu Tresor; Bipath, M. (Energy Research Centre, University of Cape Town, 2019-11)
    The optimised placement of reclosers on a distribution network is known to improve the reliability of a power system. Furthermore, the protection settings on distribution systems rely heavily on the number and placement ...