Now showing items 45-64 of 100

    • Key management in mobile ad hoc networks. 

      Van der Merwe, Johann. (2005)
      Mobile ad hoc networks (MANETs) eliminate the need for pre-existing infrastructure by relying on the nodes to perform all network services. The connectivity between the nodes is sporadic due to the shared, error-prone ...
    • Lattice-structure based adaptive MMSE detectors for DS-CDMA systems. 

      Thakadu, Batlhowahela C D. (2001)
      There has been significant interest in the research community on detectors for DS-CDMA systems. The conventional detector, which detects users ' data bits, by using a filter matched to the users' spreading codes, has two ...
    • A MAC protocol for IP-based CDMA wireless networks. 

      Mahlaba, Simon Bonginkosi. (2005)
      The evolution of the intemet protocol (IP) to offer quality of service (QoS) makes it a suitable core network protocol for next generation networks (NGN). The QoS features incorporated to IP will enable future lP-based ...
    • Maritime tracking using level sets with shape priors. 

      Frost, Duncan Peter. (2012)
      Piracy is still a significant threat to ships in a maritime environment. Areas such as the coast of Somalia and the Strait of Malacca are still plagued by pirates, and the total international cost of piracy numbers in ...
    • Markerless pose tracking of a human subject. 

      Hendry, Neil. (2013-05-13)
      High capacity wireless and xed-line broadband services have a relatively small footprint over South Africa's vast expanse. This results in many rural areas, as well as military communication when deployed, relying on ...
    • MIMO equalization. 

      Mathew, Jerry George. (2005)
      In recent years, space-time block co'des (STBC) for multi-antenna wireless systems have emerged as attractive encoding schemes for wireless communications. These codes provide full diversity gain and achieve good performance ...
    • MMSE equalizers and precoders in turbo equalization. 

      Gaffar, Mohammed Yusuf Abdul. (2003)
      Transmission of digital information through a wireless channel with resolvable multipaths or a bandwidth limited channel results in intersymbol interference (1SI) among a number of adjacent symbols. The design of an equalizer ...
    • Modeling and torque control implementtion for an 8/6 switched reluctance motor. 

      Wang, Sen. (2013-05-30)
      This thesis begins with a brief introduction of the basic principles of operation of SRMs, and explains how flux characteristics are derived from voltage and current measurements, and presents results obtained from an ...
    • A multi-objective particle swarm optimized fuzzy logic congestion detection and dual explicit notification mechanism for IP networks. 

      Nyirenda, Clement Nthambazale. (2006)
      The Internet has experienced a tremendous growth over the past two decades and with that growth have come severe congestion problems. Research efforts to alleviate the congestion problem can broadly be classified into three ...
    • Multiuser demodulation for DS-CDMA systems in fading channels. 

      Singh, Navin Runjit. (2000)
      The problems of optimal as well as suboptimal detection for CDMA transmissions over an additive white Gaussian noise (AWGN) channel, have been the focus of study in the recent past. However, CDMA transmissions are ...
    • Multiuser detection employing recurrent neural networks for DS-CDMA systems. 

      Moodley, Navern. (2006)
      Over the last decade, access to personal wireless communication networks has evolved to a point of necessity. Attached to the phenomenal growth of the telecommunications industry in recent times is an escalating demand for ...
    • Obstacle avoidance and trajectory optimisation for a power line inspection robot. 

      Rowell, Timothy. (2012)
      This dissertation presents the research, development and application of trajectory creation, obstacle avoidance and trajectory optimisation methods for an existing serial manipulator power line inspection robot (PLIR). The ...
    • Opportunistic scheduling algorithms in downlink centralized wireless networks. 

      Yin, Rui. (2005)
      As wireless spectrum efficiency is becoming increasingly important with the growing demands for wideband wireless service scheduling algorithm plays an important role in the design of advanced wireless networks. Opportunistic ...
    • A packet radio system for an industrial data network. 

      Sewnath, Gajadhar. (1992)
      This project was undertaken for a commercial electronics company, CONTROL LOGIC (CONLOG) which is involved in the research, design, development and manufacture of data acquisition, control, energy management and automotive ...
    • Packet scheduling in satellite HSDPA networks. 

      Aiyetoro, Gbolahan Rilwan. (2010)
      The continuous growth in wireless networks is not showing any sign of slowing down as new services, new technologies and new mobile users continue to emerge. Satellite networks are expected to complement the terrestrial ...
    • Parallel implementation of fractal image compression 

      Uys, Ryan F. (2000)
      Fractal image compression exploits the piecewise self-similarity present in real images as a form of information redundancy that can be eliminated to achieve compression. This theory based on Partitioned Iterated Function ...
    • Performance analysis and enhancement schemes for spatial modulation. 

      Naidoo, Nigel Reece. (2010)
      Multiple-input multiple-output (MIMO) technology has emerged as a popular technique for enhancing the reliability and capacity of wireless communication systems. In this dissertation, we analyze the spatial modulation (SM) ...
    • Performance analysis of cooperative diversity in land mobile satellite systems. 

      Awoyemi, Babatunde Seun. (2013)
      Land Mobile Satellite Systems (LMSS) generally differ from other terrestrial wireless systems. The LMSS exhibit unique characteristics with regard to the physical layer, interference scenarios, channel impairements, ...
    • Performance analysis of LAN, WAN and WLAN in Eritrea. 

      Kakay, Osman M. O. (2006)
      The dissertation addresses the communication issues of interconnecting the different government sectors LANs, and access to the global Internet. Network capacities are being purposely overengineered in today's commercial ...
    • Performance of high rate space-time trellis coded modulation in fading channels. 

      Ayodeji, Sokoya Oludare. (2005)
      Future wireless communication systems promise to offer a variety of multimedia services which require reliable transmission at high data rates over wireless links. Multiple input multiple output (MIMO) systems have received ...