Estimation of the orbital angular momentum order using a vector antenna in the presence of noise

Cheikh Dieylar Diallo, Duy Kevin Nguyen, Alexandre Chabory, Nicolas Capet
2014 The 8th European Conference on Antennas and Propagation (EuCAP 2014)  
The use of the orbital angular momentum (OAM) may be of interest in the radio-frequency spectrum notably to multiple the number of communication channels. Another way to use this property is to transmit data through the OAM state (Qbit) of the transmitted wave. In a noiseless environment, the local estimation of the OAM order can be realized by means of a vector antenna that measures the 6 components of the electromagnetic field. In this article, we study the sensitivity to noise of this
more » ... oise of this estimation. The OAM wave is generated via Laguerre-Gauss beams. For several mode orders, signal-to-noise ratio and distances to the transmitter, we perform a statistical analysis from which we obtain a probability of error in the order estimation. We demonstrate that the local estimation of the OAM order is very sensitive to noise, especially in the far-field zone.
doi:10.1109/eucap.2014.6902521 fatcat:6oa2aqwchvgevkc5g43ax56soa