Richard Maliwatu

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This paper presents a computer application that helps people with hearing or speech difficulties to use a telephone. The TSAD (telephone system aid for the deaf) is a system aimed at providing such individuals with a telephone solution. The objective is far from obliterating the existing options, but rather to compliment on the up take for those instances(More)
This paper considers exploiting the unique outdoor propagation characteristics of the Ultra High Frequency (UHF) band to optimise wireless network deployments. The relationship existing between signal strength and antenna height in UHF band is analysed. Received signal strength increases steadily with an increase in receiver antenna height up to about 8.5 m(More)
TV White Space networks are gaining momentum worldwide as an important addition to the suite of wireless protocols available for connecting developing regions. However, there has been no thorough investigation of scenarios where TV White Space performs better or worse than alternative low-cost wireless technology such as WiFi. This paper analyzes the(More)
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