Research Article
On the Restriction of Utilizing Orbital Angular Momentum in Radio Communications
@INPROCEEDINGS{10.1109/ChinaCom.2013.6694604, author={Yingjie Zhang and Wei Feng and Ning Ge}, title={On the Restriction of Utilizing Orbital Angular Momentum in Radio Communications}, proceedings={8th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2013}, month={11}, keywords={orbital angular momentum (oam) radio communication antenna arrays wireless communication oblique angle}, doi={10.1109/ChinaCom.2013.6694604} }- Yingjie Zhang
Wei Feng
Ning Ge
Year: 2013
On the Restriction of Utilizing Orbital Angular Momentum in Radio Communications
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2013.6694604
Abstract
The orbital angular momentum (OAM) is considered as one of the most fundamental physical quantities in optics. It was recently discovered that the optical OAM can be also applied to radio communications. Nevertheless, OAM-based radio communications are not applicable for long-distance scenarios. In the existing studies, both the transmitting antenna and receiving antenna are facing each other perfectly on the same axis in free space, which however is not the case in practical wireless communication systems. In this paper, we analyze the performance of OAM-based radio communication with disalignment antenna arrays, indicating the existence of an oblique angle. Both numerical and simulation results demonstrate that the capacity of OAM-based radio communication decrease significantly with disalignment antenna arrays, and the rotation phase is seriously distorted. Moreover, the performance is poorer with larger oblique angles.
