Congratulations to Saurav Dahal on completion of his PhD

Posted by: EMC Technologies
Posted on: 11/07/2020

Let us congratulate one of EMC Technologies Engineer Saurav Dahal on the completion of his PhD degree from Victoria University, Melbourne.

Dr Dahal researched on “Millimetre Wave for Fifth Generation of Wireless Communications”. His research focused on signal wave propagation modelling in the millimetre wave bands for the 5G network. Saurav’s work investigated the necessary parameters and formulated actual specifications required by cellular networks operating in higher frequency bands. His research has contributed to the Third Generation Partnership Projects (3GPP) and International Telecommunication Union (ITU) standards and published 2 IEEE Q1 journals and 3 conferences.

Mobile communication technology is continuously evolving. Early Fifth generation (5G) products, due 2020, should support high capacity, higher data rates, lower latency, lower energy consumption and should be cost-effective. High data rates will require wider bandwidths, which are available in the higher frequency millimetre wave (mmWave) bands. Millimetre waves have much shorter wavelengths compared to today’s microwave mobile systems. Understanding mmWave propagation characteristics are important in the physical layer design of future wireless systems. Statistical Channel models are required in the standardization process to evaluate implementation proposals without the expense of building costly hardware testbeds. Statistical channel models are described by a few key parameters and a variance. For example, the transmission path loss is a function of environment, range, path loss exponent (PLE) and the standard deviation of a statistical (shadowing) component. These parameters are generated by fitting an equation, in a minimum mean square error (MMSE) fashion, to a collated measurement database from several research organizations in different countries.

Considering this, a number of channel sounding empirical measurements at mmWave frequencies were conducted to characterize, model and evaluate the propagation channel properties in different 3GPP scenarios (environments) under Australian conditions. Particular outdoor areas of interest were Rural Macro (RMa), Urban Macro (UMa) and Urban Micro (UMi) while indoor areas (InH) of interest included office and shopping malls.

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