Imperial College London > Talks@ee.imperial > Featured talks > Antenna Technology for MIMO Capable Systems from Maximizing Throughput to Minimizing Interference – An Introduction to MIMObit

Antenna Technology for MIMO Capable Systems from Maximizing Throughput to Minimizing Interference – An Introduction to MIMObit

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Nyquist and Hartley started developing ideas on the transfer of information in the 1920’s. Shannon extended those ideas and discovered the fundamental equation of the Capacity in terms of the Signal to Noise Raio (SNR) in the late 1940’s. In 1945, Friis derived his power transmission equation involving single port antennas on the two sides of a Line of Sight (LOS) wireless link. Since then, Antenna Technology has focused on maximizing information transfer on LOS assumptions.

In the last 20+ years, however, multi-port antenna systems, with independent transceivers were and are being introduced. Among other things, the additional degrees of freedom offered by multiple antennas allow a significant improvement in handling the complexity and randomness of arbitrary propagation environments. By construction, therefore, design of such systems cannot be assessed by simple LOS based performance metrics.

This talk will present the evolution of Shannon’s and Friis’ formulas to the case of multi-port Smart Antenna Systems found in WiFi, 4G, 5G and Cognitive Radios. After a brief mention of efforts to modify LOS based antenna design and testing techniques, the presentation will suggest that Capacity and Throughput be used as the ultimate performance metrics of antenna system design. To this end, an electromagnetics exact formulation will be described for MIMO systems.

MIM Obit is a software tool that helps the user better design advanced MIMO antenna and Dynamic Spectrum Access systems. It is driven and architected by the philosophy that the same concepts used by smart antenna wireless systems to combat multipath and increase capacity and throughput in complicated propagation environments could and should be used to design DSA algorithms that mitigate Harmful Interference and optimize Spectrum Utilization Efficiency.

Some types of studies enabled by MIM Obit: Antenna design/specification, DSA and spectrum management, 4G and 5G communications studies, University courses teaching material.

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