Browsing by Author "Justinian Anatory"

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    Performance Analysis of MCSS for the Indoor BPLC Systems
    (International Scholarly and Scientific Research & Innovation, 2016-05-24) Justinian Anatory
    power line networks are promise infrastructure for broadband services provision to end users. However, the network performance is affected by stochastic channel changing which is due to load impedances, number of branches and branched line lengths. It has been proposed that multicarrier modulations techniques such as orthogonal frequency division multiplexing (OFDM), MultiCarrier Spread Spectrum (MCSS), wavelet OFDM can be used in such environment. This paper investigates the performance of different indoor topologies of power line networks that uses MCSS modulation scheme.It is observed that when a branch is added in the link between sending and receiving end of an indoor channel an average of 2.5dB power loss is found. In additional, when the branch is added at a node an average of 1dB power loss is found. Additionally when the terminal impedances of the branch change from line characteristic impedance to impedance either higher or lower values the channel performances were tremendously improved. For example changing terminal load from characteristic impedance (85 ) to 5 the signal to noise ratio (SNR) required to attain the same performances were decreased from 37dB to 24dB respectively. Also, changing the terminal load from channel characteristic impedance (85 ) to very higher impedance (1600 ) the SNR required to maintain the same performances were decreased from 37dB to 23dB. The result concludes that MCSS performs better compared with OFDM techniques in all aspects and especially when the channel is terminated in either higher or lower impedances.
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    The Establishment of the School of Virtual Education at the University of Dodoma in Tanzania
    (International Journal of Computer Applications, 2015-04-16) Justinian Anatory
    This paper describes the personal experience and reflections of the author who was the first Dean of the School of Virtual Education (SoVE) at the University of Dodoma (UDOM) in Tanzania. It describes in detail different tactics the author used to establish SoVE. In additional, it is suggested that the best way to implement a vibrant SoVE in developing countries like Tanzania can include three departments namely Department of Content Engineering and Multimedia Technology (DoCEMT), Department of Virtual Educational Technologies and Applications (DoVETA) and Department of Virtual Education Delivery (DoVED). The first two Departments are for capacity building while the third is for technology enhanced teaching and learning, online teaching and learning and instructional design for virtual delivery.