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http://dx.doi.org/10.5515/KJKIEES.2018.29.1.28

Ground Reflection Effect on OAM Multi-Mode Transmission System Based on Uniform Circular Arrays  

Yoo, Jeong-Ung (Division of Electronics and Information Engineering, Chonbuk National University)
Son, Hae-Won (Division of Electronics and Information Engineering, Chonbuk National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.1, 2018 , pp. 28-31 More about this Journal
Abstract
This paper investigates the ground reflection effect on the channel capacity of an orbital angular momentum (OAM) multi-mode transmission system that uses uniform circular array (UCA) antennas. The ground-reflected signals cause inter-mode interferences between the OAM modes, and lead to system performance degradation. The OAM multi-mode channel capacity severely degrades owing to the ground reflection as the transmission distance increases. Increasing the UCA height above the ground and using highly directive array elements can mitigate the ground reflection effect and increase the channel capacity.
Keywords
Orbital Angular Momentum; Ground Reflection Effect; Channel Capacity;
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