Multiple-input multiple-output (MIMO) technology has significantly impacted wireless communication, by providing extraordinary performance gains. However, a minimum inter-antenna space constraint in MIMO systems does not allow its integration in devices with limited space. In this context, the concept of fluid antenna systems (FASs) appears to be a potent solution, where there is no such restriction. In this paper, we investigate the average level crossing rate (LCR) of such FASs. Specifically, we derive closed-form analytical expressions of the LCR of such systems and extensive Monte-Carlo simulations validate the proposed analytical framework. Moreover, we also demonstrate that under certain conditions, the LCR obtained coincides with that of a conventional selection combining-based receiver. Finally, the numerical results also provide insights regarding the selection of appropriate parameters that enhance the system performance.
@article{arxiv.2205.01711,
title = {On the Level Crossing Rate of Fluid Antenna Systems},
author = {Priyadarshi Mukherjee and Constantinos Psomas and Ioannis Krikidis},
journal= {arXiv preprint arXiv:2205.01711},
year = {2022}
}
Comments
To appear in IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2022